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Mazza E, Troiano E, Ferro Y, Lisso F, Tosi M, Turco E, Pujia R, Montalcini T. Obesity, Dietary Patterns, and Hormonal Balance Modulation: Gender-Specific Impacts. Nutrients 2024; 16:1629. [PMID: 38892561 PMCID: PMC11174431 DOI: 10.3390/nu16111629] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2024] [Revised: 05/22/2024] [Accepted: 05/23/2024] [Indexed: 06/21/2024] Open
Abstract
Understanding the intricate relationship between nutrition, hormonal balance, and gender-specific factors is crucial for developing targeted interventions to mitigate obesity-related endocrine disruptions and improve metabolic health. This narrative review examines the impact of various dietary patterns on hormonal regulation in both men and women, focusing on their effects on hormonal balance and metabolic health in the context of obesity. Calorie restriction, the Western diet, high-fat diets, low-CHO diets, plant-based diets, and the Mediterranean diet are analyzed in relation to their influence on obesity-related endocrine disruptions and metabolic health. Future research directions include investigating the specific mechanisms underlying dietary influences on hormonal regulation, addressing the gender-specific metabolic differences and body fat distribution, and exploring the dietary needs of individuals undergoing gender transition. Personalized dietary interventions tailored to individual metabolic and hormonal profiles are essential for optimizing health outcomes across the gender spectrum. By integrating gender-specific considerations into dietary recommendations, healthcare professionals can better support individuals in achieving optimal metabolic health and hormonal balance.
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Affiliation(s)
- Elisa Mazza
- Department of Clinical and Experimental Medicine, University Magna Græcia, 88100 Catanzaro, Italy; (E.M.); (T.M.)
- Technical Scientific Association of Food, Nutrition and Dietetics (ASAND), 95128 Catania, Italy; (E.T.); (F.L.)
| | - Ersilia Troiano
- Technical Scientific Association of Food, Nutrition and Dietetics (ASAND), 95128 Catania, Italy; (E.T.); (F.L.)
- Social Educational Directorate of Rome III Montesacro Municipality, 00139 Rome, Italy
| | - Yvelise Ferro
- Department of Medical and Surgical Science, University Magna Græcia, 88100 Catanzaro, Italy; (Y.F.); (R.P.)
| | - Fabrizia Lisso
- Technical Scientific Association of Food, Nutrition and Dietetics (ASAND), 95128 Catania, Italy; (E.T.); (F.L.)
- “Sant’Anna” Hospital, San Fermo della Battaglia, 22042 Como, Italy
| | - Martina Tosi
- Technical Scientific Association of Food, Nutrition and Dietetics (ASAND), 95128 Catania, Italy; (E.T.); (F.L.)
- Department of Health Sciences, University of Milan, 20146 Milan, Italy
| | - Ettore Turco
- Department of Public Health, University of Naples “Federico II”, 80131 Naples, Italy;
| | - Roberta Pujia
- Department of Medical and Surgical Science, University Magna Græcia, 88100 Catanzaro, Italy; (Y.F.); (R.P.)
| | - Tiziana Montalcini
- Department of Clinical and Experimental Medicine, University Magna Græcia, 88100 Catanzaro, Italy; (E.M.); (T.M.)
- Research Center for the Prevention and Treatment of Metabolic Diseases, University Magna Græcia, 88100 Catanzaro, Italy
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Gkouskou KK, Grammatikopoulou MG, Lazou E, Vasilogiannakopoulou T, Sanoudou D, Eliopoulos AG. A genomics perspective of personalized prevention and management of obesity. Hum Genomics 2024; 18:4. [PMID: 38281958 PMCID: PMC10823690 DOI: 10.1186/s40246-024-00570-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2023] [Accepted: 01/03/2024] [Indexed: 01/30/2024] Open
Abstract
This review discusses the landscape of personalized prevention and management of obesity from a nutrigenetics perspective. Focusing on macronutrient tailoring, we discuss the impact of genetic variation on responses to carbohydrate, lipid, protein, and fiber consumption. Our bioinformatic analysis of genomic variants guiding macronutrient intake revealed enrichment of pathways associated with circadian rhythm, melatonin metabolism, cholesterol and lipoprotein remodeling and PPAR signaling as potential targets of macronutrients for the management of obesity in relevant genetic backgrounds. Notably, our data-based in silico predictions suggest the potential of repurposing the SYK inhibitor fostamatinib for obesity treatment in relevant genetic profiles. In addition to dietary considerations, we address genetic variations guiding lifestyle changes in weight management, including exercise and chrononutrition. Finally, we emphasize the need for a refined understanding and expanded research into the complex genetic landscape underlying obesity and its management.
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Affiliation(s)
- Kalliopi K Gkouskou
- Department of Biology, Medical School, National and Kapodistrian University of Athens, Mikras Asias 75, 11527, Athens, Greece.
- GENOSOPHY P.C., Athens, Greece.
| | - Maria G Grammatikopoulou
- Unit of Immunonutrition and Clinical Nutrition, Department of Rheumatology and Clinical Immunology, University General Hospital of Larissa, Faculty of Medicine, School of Health Sciences, University of Thessaly, Larissa, Greece
| | | | - Theodora Vasilogiannakopoulou
- Department of Biology, Medical School, National and Kapodistrian University of Athens, Mikras Asias 75, 11527, Athens, Greece
| | - Despina Sanoudou
- Clinical Genomics and Pharmacogenomics Unit, 4th Department of Internal Medicine, Medical School, National and Kapodistrian University of Athens, Athens, Greece
- Center for New Biotechnologies and Precision Medicine, Medical School, National and Kapodistrian University of Athens, Athens, Greece
- Biomedical Research Foundation of the Academy of Athens, Athens, Greece
| | - Aristides G Eliopoulos
- Department of Biology, Medical School, National and Kapodistrian University of Athens, Mikras Asias 75, 11527, Athens, Greece.
- GENOSOPHY P.C., Athens, Greece.
- Center for New Biotechnologies and Precision Medicine, Medical School, National and Kapodistrian University of Athens, Athens, Greece.
- Biomedical Research Foundation of the Academy of Athens, Athens, Greece.
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Agnoli C, Baroni L, Bertini I, Ciappellano S, Fabbri A, Goggi S, Metro D, Papa M, Sbarbati R, Scarino ML, Pellegrini N, Sieri S. A comprehensive review of healthy effects of vegetarian diets. Nutr Metab Cardiovasc Dis 2023; 33:1308-1315. [PMID: 37217433 DOI: 10.1016/j.numecd.2023.04.005] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/09/2022] [Revised: 04/04/2023] [Accepted: 04/05/2023] [Indexed: 05/24/2023]
Abstract
AIMS A comprehensive review comparing the effect of vegetarian (V) and non-vegetarian (NV) diets on the major cardiometabolic diseases' outcomes was performed. DATA SYNTHESIS We performed literature research (up to December 31, 2022) of the evidence separately for vascular disease (VD), obesity (OB), dyslipidemia (Dysl), hypertension (HPT), type 2 diabetes (T2D), metabolic syndrome (MetS), analyzing only cohort studies and randomized controlled studies (RCTs) and comparing the effect of V and NV diets. Cohort studies showed advantages of V diets compared to NV diets on incidence and/or mortality risk for ischemic heart disease, overweight and OB risk. Most cohort studies showed V had lower risk of HPT and lower blood pressure (BP) than NV and V diets had positive effects on T2D risk or plasma parameters. The few cohort studies on the risk of MetS reported mixed results. In RCTs, V diets, mainly low-fat-vegan ones, led to greater weight loss and improved glycemic control than NV diets and in the only one RCT a partial regression of coronary atherosclerosis. In most RCTs, V diets significantly reduced LDL-C levels (but also decreased HDL-C levels) and BP. CONCLUSIONS In this comprehensive review of the association between V diets and cardiometabolic outcomes, we found that following this type of diet may help to prevent most of these diseases. However, the non-uniformity of the studies, due to ethnic, cultural, and methodological differences, does not allow for generalizing the present results and drawing definitive conclusions. Further, well-designed studies are warranted to confirm the consistency of our conclusions.
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Affiliation(s)
- C Agnoli
- Epidemiology and Prevention Unit, Fondazione IRCCS Istituto Nazionale dei Tumori, Milan, Italy
| | - L Baroni
- Scientific Society for Vegetarian Nutrition - SSNV, Venice (VE), Italy
| | | | - S Ciappellano
- Department of Food, Environmental and Nutritional Sciences (DeFENS), Division of Human Nutrition, University of Milan, Italy
| | - A Fabbri
- Department of Food and Drug Science, University of Parma, Italy
| | - S Goggi
- Nutrition and Dietetic Department, Plant Based Clinic, via Giannone 9, 20154, Milano, Italy
| | - D Metro
- Department of Biomedical and Dental Sciences and Morphofunctional Imaging, University of Messina, 98125, Messina, Italy
| | - M Papa
- Messina Provincial Health Authority, Messina, Italy
| | | | - M L Scarino
- Research Institute for Food and Nutrition, Council for Agricultural Research and Economics, Rome, Italy
| | - N Pellegrini
- Department of Agricultural, Food, Environmental and Animal Sciences, University of Udine, Udine, Italy.
| | - S Sieri
- Epidemiology and Prevention Unit, Fondazione IRCCS Istituto Nazionale dei Tumori, Milan, Italy
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Gao L, Zhu J, Wang L, Wen LM, Chen Z, Zhao B, Wang W, Wang Y. Interactions between Self-Perceived Weight Status and Lifestyle Behaviors and Their Associations with Childhood Obesity: Results from the Childhood Obesity Study in China Mega-Cities. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:9921. [PMID: 36011552 PMCID: PMC9408598 DOI: 10.3390/ijerph19169921] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/07/2022] [Revised: 08/03/2022] [Accepted: 08/09/2022] [Indexed: 06/15/2023]
Abstract
This study investigated the interactions between self-perceived weight status and lifestyle behaviors, and their associations with childhood obesity among school children. Methods: Cross-sectional study data from a nationwide sample of 3258 participants (aged 8-15 years old) during 2015-2017 were used. Self-perceived weight status and lifestyle factors (dietary intake and physical activity) were assessed using self-administered questionnaires. Multivariable mixed-effects models tested the effect of interactions between weight self-perception and behavioral factors on overweight and obesity (ow/ob). Results: Overall ow/ob prevalence based on BMI was 30.9% (38.5% for boys, 23.0% for girls). Based on self-perceived weight status, ow/ob prevalence was 37.7% (35.8% for boys, 39.7% for girls). 41.2% of boys and 25.9% of girls underestimated their actual weight status. The interaction between self-perceived weight status and meat consumption was associated with ow/ob in boys, while the interaction between self-assessed weight status and protein foods and sedentary lifestyle were associated with ow/ob in girls. The attributable proportions of these three factors were 39.8%, 48.2%, and 34.6%, respectively. Conclusions: The self-perceived weight status was different from their actual weight status in children. The interactions between self-perceived weight status and lifestyle behaviors were associated with ow/ob. Health promotion programs that empower children to have appropriate self-awareness of weight status, eating, and physical activity behaviors need to be developed and implemented.
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Affiliation(s)
- Liwang Gao
- Center for Non-Communicable Disease Management, Beijing Children’s Hospital, Capital Medical University, National Center for Children’s Health, Beijing 100045, China
- Global Health Institute, School of Public Health, Xi’an Jiaotong University Health Science Center, Xi’an 710061, China
| | - Jiang Zhu
- Global Health Institute, School of Public Health, Xi’an Jiaotong University Health Science Center, Xi’an 710061, China
| | - Liang Wang
- Department of Public Health, Robbins College of Health and Human Sciences, Baylor University, Waco, TX 76798, USA
| | - Li Ming Wen
- School of Public Health, Faculty of Medicine and Health, University of Sydney, Sydney 2006, Australia
| | - Zhuo Chen
- Department of Health Policy and Management, College of Public Health, University of Georgia, Athens, GA 30602, USA
- School of Economics, Faculty of Humanities and Social Sciences, University of Nottingham Ningbo, Ningbo 315199, China
| | - Bingtong Zhao
- Global Health Institute, School of Public Health, Xi’an Jiaotong University Health Science Center, Xi’an 710061, China
| | - Weidong Wang
- Department of Sociology, School of Sociology and Population Studies, Renmin University of China, Beijing 100034, China
| | - Youfa Wang
- Global Health Institute, School of Public Health, Xi’an Jiaotong University Health Science Center, Xi’an 710061, China
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Luhovyy BL, Kathirvel P. Food proteins in the regulation of blood glucose control. ADVANCES IN FOOD AND NUTRITION RESEARCH 2022; 102:181-231. [PMID: 36064293 DOI: 10.1016/bs.afnr.2022.05.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Food proteins, depending on their origin, possess unique characteristics that regulate blood glucose via multiple physiological mechanisms, including the insulinotropic effects of amino acids, the activation of incretins, and slowing gastric emptying rate. The strategies aimed at curbing high blood glucose are important in preventing impaired blood glucose control, including insulin resistance, prediabetes and diabetes. The effect of proteins on blood glucose control can be achieved with high-protein foods short-term, and high-protein diets long-term using foods that are naturally high in protein, such as dairy, meat, soy and pulses, or by formulating high-protein functional food products using protein concentrates and isolates, or blended mixtures of proteins from different sources. Commercial sources of protein powders are represented by proteins and hydrolysates of caseins, whey proteins and their fractions, egg whites, soy, yellow pea and hemp which will be reviewed in this chapter. The effective doses of food protein that are capable of reducing postprandial glycemia start from 7 to 10g and higher per serving; however, the origin of protein, and macronutrient composition of a meal will determine the magnitude and duration of their effect on glycemia. The theoretical and methodological framework to evaluate the effect of foods, including food proteins, on postprandial glycemia for substantiation of health claims on food has been proposed in Canada and is discussed in the context of global efforts to harmonize the international food regulation and labeling.
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Affiliation(s)
- Bohdan L Luhovyy
- Department of Applied Human Nutrition, Mount Saint Vincent University, Halifax, Nova Scotia, Canada.
| | - Priya Kathirvel
- Department of Applied Human Nutrition, Mount Saint Vincent University, Halifax, Nova Scotia, Canada
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Banaszak M, Górna I, Przysławski J. Non-Pharmacological Treatments for Insulin Resistance: Effective Intervention of Plant-Based Diets—A Critical Review. Nutrients 2022; 14:nu14071400. [PMID: 35406013 PMCID: PMC9002735 DOI: 10.3390/nu14071400] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2022] [Revised: 03/19/2022] [Accepted: 03/25/2022] [Indexed: 01/22/2023] Open
Abstract
Plant-based diets are becoming increasingly popular. Vegetarian diets are better for the environment and exhibit health benefits. A correctly balanced plant-based diet is appropriate at every stage of life. Compared to omnivores, vegetarians consume more fruits and vegetables, more fibre, vitamins C and E, magnesium and less saturated fats. In general, they have better nutrition knowledge, and they are slimmer, healthier and live longer than omnivores. It also seems that following a plant-based diet prevents the onset of chronic diseases such as cardiovascular diseases, hypertension, type 2 diabetes, obesity and some cancers. Food intake has a key influence on insulin resistance. Consumption of calorie-rich and highly processed foods, meats and sweetened beverages is a characteristic element of Western diets. They promote and elevate insulin resistance and type 2 diabetes. In contrast, intake of pulses and exclusion of meats as well as animal products bring significant benefits to vegetarian diets. According to studies, vegetarians and vegans have better blood parameters, including better glucose, insulin, total cholesterol, and LDL cholesterol levels. Their homeostatic model assessment for insulin resistance (HOMA-IR) test results are also better. More plant-based foods and fewer animal foods in a diet result in lower insulin resistance and a lower risk of prediabetes and type 2 diabetes. The aim of the study was to investigate the effect of plant-based diets on insulin resistance. In this review, we focused on presenting the positive effects of vegetarian and vegan diets on insulin resistance while showing possible clinical applications of plant-based diets in the treatment and prevention of modern-age diseases. Current and reliable publications meeting the requirements of Evidence-Based Medicine (EBM) were taken into account in this review.
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Affiliation(s)
- Michalina Banaszak
- Faculty of Medical Sciences, Poznan University of Medical Sciences, 60-812 Poznan, Poland;
| | - Ilona Górna
- Department of Bromatology, Poznan University of Medical Sciences, 60-806 Poznan, Poland;
- Correspondence: ; Tel.: +48-61-641-83-90
| | - Juliusz Przysławski
- Department of Bromatology, Poznan University of Medical Sciences, 60-806 Poznan, Poland;
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7
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Dietary Plant and Animal Protein Sources Oppositely Modulate Fecal Bilophila and Lachnoclostridium in Vegetarians and Omnivores. Microbiol Spectr 2022; 10:e0204721. [PMID: 35285706 PMCID: PMC9045121 DOI: 10.1128/spectrum.02047-21] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
The food we eat not only nourishes our bodies but also provides nutrients to the bacteria living in our guts. Gut bacterial communities are known to be affected by many factors, including diet and bowel cleansing, but the impacts of vegetarian and omnivore diets on fecal bacterial composition are still uncertain. In this study, we analyzed the bacterial compositions of fecal samples from vegetarians and omnivores 5 to 7 days after bowel cleansing, and we correlated specific dietary constituents with the relative abundances of specialized fecal bacteria. A total of 46 participants (23 vegetarians and 23 omnivores) were recruited. All participants underwent standard bowel cleansing before colonoscopy screening. Fecal samples were collected from each participant 5 to 7 days after bowel cleansing, and the fecal microbiota compositions were analyzed with next-generation sequencing. Sixteen participants also provided an image-based dietary record for nutritional assessment. No major differences between dietary groups were observed in terms of fecal bacterial richness, alpha diversity, or beta diversity. A minority of potential pathobionts tended to be elevated in omnivores compared to vegetarians, whereas potential probiotic species tended to be higher in the vegetarians. Detailed dietary assessments further revealed that the plant- and animal-derived proteins may oppositely modulate the relative abundances of pathobionts Bilophila and Lachnoclostridium. However, these results were not statistically significant after multiple-comparison correction. These results suggest that specialized probiotic and pathobiont microbiota constituents are sensitive to the plant- or animal-derived dietary components ingested by vegetarians and omnivores after bowel cleansing. IMPORTANCE Dietary pattern and food choice are associated with expansion of gut pathobionts and risk for metabolic and colonic disease. However, the effects of dietary interventions on intestinal microbiota remain unclear. After bowel cleansing, potential pathobionts and probiotic bacteria were increased in omnivores and vegetarians, respectively. The pathobionts Bilophila and Lachnoclostridium were oppositely modulated by dietary animal and plant protein. From a clinical perspective, fecal pathobionts that may indicate risk for metabolic and colonic disease can potentially be modulated with dietary interventions.
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Substitution of dietary macronutrients and their sources in association with breast cancer: results from a large-scale case–control study. Eur J Nutr 2022; 61:2687-2695. [DOI: 10.1007/s00394-022-02811-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2021] [Accepted: 01/19/2022] [Indexed: 11/04/2022]
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Soy Food Intake Associated with Obesity and Hypertension in Children and Adolescents in Guangzhou, Southern China. Nutrients 2022; 14:nu14030425. [PMID: 35276781 PMCID: PMC8839714 DOI: 10.3390/nu14030425] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2021] [Revised: 01/13/2022] [Accepted: 01/16/2022] [Indexed: 11/17/2022] Open
Abstract
The associations between soy food intake and cardio-metabolic risk factors in children remain unclear due to limited evidence. We aim to explore soy food intake and its association with the risks of obesity and hypertension in Chinese children and adolescents. A total of 10,536 children and adolescents aged 7–18 years (5125 boys and 5411 girls) were enrolled in a cross-sectional study in Guangzhou City, southern China. Data on demographic characteristics and dietary consumption were collected using self-reported questionnaires, and anthropometric characteristics were measured. Obesity, abdominal obesity, and hypertension were defined using Chinese criteria for children and adolescents. A multiple logistic regression model was applied to estimate the association between soy food intake and obesity and hypertension. Roughly 39.5% of the participants consumed soy food more than three times per week. The mean amounts of liquid and solid soy food intake were 0.35 ± 0.54 cups/day and 0.46 ± 0.63 servings/day, respectively. The adjusted odds ratios (OR) of hypertension among those with high liquid soy food intake and a high frequency of all soy food intake (more than three times/week) were 0.79 (95% confidence interval (CI), 0.67–0.94), and 0.83 (95% CI, 0.70–0.97) compared to those with no intake. Additionally, the adjusted OR of obesity among those with high solid soy food intake and a high frequency of all soy food intake were 1.34 (95% CI, 1.09–1.63) and 1.30 (95% CI, 1.07–1.58), respectively. In conclusion, 39.5% of southern Chinese children and adolescents had high soy food intake (more than three times/week), which was significantly associated with a lower prevalence of hypertension and a greater prevalence of obesity.
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Stokes A, Campbell KJ, Yu HJ, Szymlek-Gay EA, Abbott G, He QQ, Zheng M. Protein Intake from Birth to 2 Years and Obesity Outcomes in Later Childhood and Adolescence: A Systematic Review of Prospective Cohort Studies. Adv Nutr 2021; 12:1863-1876. [PMID: 33903896 PMCID: PMC8483959 DOI: 10.1093/advances/nmab034] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2021] [Revised: 03/01/2021] [Accepted: 03/05/2021] [Indexed: 12/18/2022] Open
Abstract
Emerging evidence shows an association between protein intake during infancy and later obesity risk, and that association may differ by protein sources. This systematic review summarized and evaluated prospective cohort studies assessing the long-term association of total protein intake and protein sources during infancy (from birth to 2 y) with subsequent obesity outcomes in childhood or adolescence. Literature searches were conducted in Embase, Medline, Scopus, and Web of Science. Sixteen studies that reported associations between total protein intake and/or protein intake from different sources from birth to 2 y and ≥1 obesity outcomes in childhood or adolescence from 9 cohorts were identified. Most studies (11/16) were rated as high quality. The most frequently reported association was total protein intake and BMI (up to 10 y) with 6 out of 7 cohorts showing significant positive associations. Similar associations were found for animal protein, but not for plant protein. Limited studies examined the association between protein intake (both total and sources) and body composition (body fat, fat mass, and fat-free mass) and revealed inconsistent findings. Overall, higher intakes of total and animal protein during infancy were associated with higher BMI in childhood and adolescence. Future studies investigating the contribution of protein sources in long-term obesity development are needed. This review was registered at PROSPERO as CRD42020166540.
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Affiliation(s)
- Alexandra Stokes
- School of Exercise and Nutrition eSciences, Deakin University, Geelong, Australia
| | - Karen J Campbell
- Institute for Physical Activity and Nutrition, School of Exercise and Nutrition Sciences, Deakin University, Geelong, Australia
| | - Hong-Jie Yu
- School of Health Sciences, Wuhan University, Wuhan, China
| | - Ewa A Szymlek-Gay
- Institute for Physical Activity and Nutrition, School of Exercise and Nutrition Sciences, Deakin University, Geelong, Australia
| | - Gavin Abbott
- Institute for Physical Activity and Nutrition, School of Exercise and Nutrition Sciences, Deakin University, Geelong, Australia
| | - Qi-Qiang He
- School of Health Sciences, Wuhan University, Wuhan, China
| | - Miaobing Zheng
- Institute for Physical Activity and Nutrition, School of Exercise and Nutrition Sciences, Deakin University, Geelong, Australia
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Total protein, not amino acid composition, differs in plant-based versus omnivorous dietary patterns and determines metabolic health effects in mice. Cell Metab 2021; 33:1808-1819.e2. [PMID: 34270927 PMCID: PMC8478138 DOI: 10.1016/j.cmet.2021.06.011] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/10/2020] [Revised: 04/14/2021] [Accepted: 06/16/2021] [Indexed: 01/26/2023]
Abstract
Plant-based dietary patterns are associated with improved cardiometabolic health, but causal dietary components are unclear. Protein has been proposed to play a role, but the importance of protein quantity versus quality remains unknown. We investigated the contributions of total protein amount, amino acid (AA) composition, and plant versus animal source. Analysis of total protein and AA composition of food items and dietary patterns revealed differences between individual food items, but few differences between AA profiles of vegan versus omnivorous dietary patterns. Effects of protein quantity, but not quality, on cardiometabolic health markers were observed in mice using semi-purified diets with crystalline AAs in plant versus animal-based ratios and naturally sourced diets with whole-food ingredients. Our data show relatively little difference in protein quality between plant-based and omnivorous dietary patterns and that reduced total protein intake in plant-based dietary patterns may be a contributor to the benefits of plant-based diets.
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12
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Atakan MM, Koşar ŞN, Güzel Y, Tin HT, Yan X. The Role of Exercise, Diet, and Cytokines in Preventing Obesity and Improving Adipose Tissue. Nutrients 2021; 13:nu13051459. [PMID: 33922998 PMCID: PMC8145589 DOI: 10.3390/nu13051459] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2021] [Revised: 04/20/2021] [Accepted: 04/22/2021] [Indexed: 12/17/2022] Open
Abstract
The prevalence of obesity continues to rise worldwide despite evidence-based public health recommendations. The promise to adopt a healthy lifestyle is increasingly important for tackling this global epidemic. Calorie restriction or regular exercise or a combination of the two is accepted as an effective strategy in preventing or treating obesity. Furthermore, the benefits conferred by regular exercise to overcome obesity are attributed not only to reduced adiposity or reduced levels of circulating lipids but also to the proteins, peptides, enzymes, and metabolites that are released from contracting skeletal muscle or other organs. The secretion of these molecules called cytokines in response to exercise induces browning of white adipose tissue by increasing the expression of brown adipocyte-specific genes within the white adipose tissue, suggesting that exercise-induced cytokines may play a significant role in preventing obesity. In this review, we present research-based evidence supporting the effects of exercise and various diet interventions on preventing obesity and adipose tissue health. We also discuss the interplay between adipose tissue and the cytokines secreted from skeletal muscle and other organs that are known to affect adipose tissue and metabolism.
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Affiliation(s)
- Muhammed Mustafa Atakan
- Division of Exercise Nutrition and Metabolism, Faculty of Sport Sciences, Hacettepe University, 06800 Ankara, Turkey; (M.M.A.); (Ş.N.K.); (Y.G.)
| | - Şükran Nazan Koşar
- Division of Exercise Nutrition and Metabolism, Faculty of Sport Sciences, Hacettepe University, 06800 Ankara, Turkey; (M.M.A.); (Ş.N.K.); (Y.G.)
| | - Yasemin Güzel
- Division of Exercise Nutrition and Metabolism, Faculty of Sport Sciences, Hacettepe University, 06800 Ankara, Turkey; (M.M.A.); (Ş.N.K.); (Y.G.)
| | - Hiu Tung Tin
- Institute for Health and Sport (iHeS), Victoria University, P.O. Box 14428, Melbourne 8001, Australia;
| | - Xu Yan
- Institute for Health and Sport (iHeS), Victoria University, P.O. Box 14428, Melbourne 8001, Australia;
- Sarcopenia Research Program, Australia Institute for Musculoskeletal Sciences (AIMSS), Melbourne 3021, Australia
- Correspondence: ; Tel.: +61-3-9919-4024; Fax: +61-3-9919-5615
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13
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Ahnen RT, Jonnalagadda SS, Slavin JL. Role of plant protein in nutrition, wellness, and health. Nutr Rev 2021; 77:735-747. [PMID: 31322670 DOI: 10.1093/nutrit/nuz028] [Citation(s) in RCA: 57] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Plant-based diets, and more specifically plant-based proteins, have been the subject of growing interest from researchers and consumers because of their potential health benefits as well as their positive environmental impact. Of course, plant proteins are found in plant foods, and positive health benefits of plant foods are linked to dietary fiber, vitamins, minerals, and phytochemicals. In epidemiological studies it is not possible to separate out the health benefits of plant foods in general as opposed to plant proteins specifically. Additionally, few vegans, who consume only plant-based proteins, are included in existing prospective cohort studies. Isolated plant proteins (soy, pea) have been used in intervention trials, but often to improve biomarkers linked to disease risk, including serum lipids or blood pressure. This review is an overview of plant proteins, the whole foods they are associated with, and the potential health benefits linked to consumption of protein from plant sources. Plant proteins and their potential for reducing the risk of developing metabolic syndrome, diabetes management, cancer prevention, and weight management are each discussed, as are the various rating systems currently used to determine protein quality from plant sources. Although additional research is needed that focuses specifically on the role that plant protein plays in the prevention and management of these chronic illnesses, rather than the role played by a more general plant-based diet, evidence suggests that plant proteins offer nutritional benefits to those who consume them. Limitations to plant proteins, including lower protein quality, must also be considered in this discussion.
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Affiliation(s)
- Rylee T Ahnen
- Department of Food Science and Nutrition, University of Minnesota, St. Paul, Minnesota, USA
| | | | - Joanne L Slavin
- Department of Food Science and Nutrition, University of Minnesota, St. Paul, Minnesota, USA
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Shahavandi M, Djafari F, Shahinfar H, Davarzani S, Babaei N, Ebaditabar M, Djafarian K, Clark CCT, Shab-Bidar S. The association of plant-based dietary patterns with visceral adiposity, lipid accumulation product, and triglyceride-glucose index in Iranian adults. Complement Ther Med 2020; 53:102531. [PMID: 33066861 DOI: 10.1016/j.ctim.2020.102531] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2020] [Accepted: 07/27/2020] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND We sought to investigate whether adherence to a more plant-based, and less animal-based, diet is associated with visceral adiposity, lipid accumulation product (LAP), and triglyceride-glucose index (TyG) in Iranian adults. METHODS This cross-sectional study was conducted on 270 adults aged between 18-75 years old. We created three plant-based diets. including an overall plant-based diet index (PDI), hPDI, and uPDI based on tertiles regarding the intake of animal- or plant-based food items obtained from a semi quantitative food-frequency questionnaire. RESULTS Higher hPDI was significantly associated with lower body mass index (BMI) (P-value = 0.01), lower waist circumference (P-value<0.001), and lower waist-hip ratio (P-value<0.001). A significant increase was found for high density lipoproteins (HDL) (P-trend <0.001) with a significant decrease for LAP (P-value = 0.03) in those with higher adherence to hPDI. Moreover, greater adherence to PDI was associated with a significant increase in diastolic blood pressure (DBP) (p-value = 0.01) and fat free mass (FFM) (p-value = 0.01). There were no significant associations between PDIs and TyG and VFA. CONCLUSION We found that a higher hPDI score was significantly associated with better anthropometric measurements. A significant increase was found for HDL and a significant decrease was found for LAP on hPDI. However, a higher PDI score was significantly associated with higher DBP and higher FFM.
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Affiliation(s)
- Mahshid Shahavandi
- Department of Community Nutrition, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences (TUMS), Tehran, Iran
| | - Farhang Djafari
- Department of Community Nutrition, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences (TUMS), Tehran, Iran
| | - Hossein Shahinfar
- Department of Community Nutrition, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences (TUMS), Tehran, Iran
| | - Samira Davarzani
- Department of Community Nutrition, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences (TUMS), Tehran, Iran
| | - Nadia Babaei
- Department of Community Nutrition, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences (TUMS), Tehran, Iran
| | - Mojdeh Ebaditabar
- Department of Community Nutrition, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences (TUMS), Tehran, Iran
| | - Kurosh Djafarian
- Department of Clinical Nutrition, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences, Tehran, Iran
| | - Cain C T Clark
- Centre for Intelligent Healthcare, and Life Sciences, Coventry University, Coventry, CV15FB, UK
| | - Sakineh Shab-Bidar
- Department of Community Nutrition, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences (TUMS), Tehran, Iran.
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15
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Naghshi S, Sadeghi O, Willett WC, Esmaillzadeh A. Dietary intake of total, animal, and plant proteins and risk of all cause, cardiovascular, and cancer mortality: systematic review and dose-response meta-analysis of prospective cohort studies. BMJ 2020; 370:m2412. [PMID: 32699048 PMCID: PMC7374797 DOI: 10.1136/bmj.m2412] [Citation(s) in RCA: 129] [Impact Index Per Article: 32.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 05/20/2020] [Indexed: 12/11/2022]
Abstract
OBJECTIVE To examine and quantify the potential dose-response relation between intake of total, animal, and plant protein and the risk of mortality from all causes, cardiovascular disease, and cancer. DESIGN Systematic review and meta-analysis of prospective cohort studies. DATA SOURCES PubMed, Scopus, and ISI Web of Science until December 2019, and references of retrieved relevant articles. STUDY SELECTION Prospective cohort studies that reported the risk estimates for all cause, cardiovascular, and cancer mortality in adults aged 18 or older. DATA SYNTHESIS Random effects models were used to calculate pooled effect sizes and 95% confidence intervals for the highest versus lowest categories of protein intake and to incorporate variation between studies. Linear and non-linear dose-response analyses were done to evaluate the dose-response relations between protein intake and mortality. RESULTS 32 prospective cohort studies were included in the systematic review and 31 in the meta-analysis. During the follow-up period of 3.5 to 32 years, 113 039 deaths (16 429 from cardiovascular disease and 22 303 from cancer) occurred among 715 128 participants. Intake of total protein was associated with a lower risk of all cause mortality (pooled effect size 0.94, 95% confidence interval 0.89 to 0.99, I2=58.4%, P<0.001). Intake of plant protein was significantly associated with a lower risk of all cause mortality (pooled effect size 0.92, 95% confidence interval 0.87 to 0.97, I2=57.5%, P=0.003) and cardiovascular disease mortality (pooled hazard ratio 0.88, 95% confidence interval 0.80 to 0.96, I2=63.7%, P=0.001), but not with cancer mortality. Intake of total and animal protein was not significantly associated with risk of cardiovascular disease and cancer mortality. A dose-response analysis showed a significant inverse dose-response association between intake of plant protein and all cause mortality (P=0.05 for non-linearity). An additional 3% energy from plant proteins a day was associated with a 5% lower risk of death from all causes. CONCLUSIONS Higher intake of total protein was associated with a lower risk of all cause mortality, and intake of plant protein was associated with a lower risk of all cause and cardiovascular disease mortality. Replacement of foods high in animal protein with plant protein sources could be associated with longevity.
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Affiliation(s)
- Sina Naghshi
- Students' Scientific Research Center, Tehran University of Medical Sciences, Tehran, Iran
- Department of Clinical Nutrition, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences, Tehran, Iran
| | - Omid Sadeghi
- Department of Community Nutrition, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences, Tehran, Iran
| | - Walter C Willett
- Departments of Nutrition and Epidemiology, Harvard TH Chan School of Public Health, Boston, MA, USA
- Channing Division of Network Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA, USA
| | - Ahmad Esmaillzadeh
- Department of Community Nutrition, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences, PO Box 14155-6117, Tehran, Iran
- Obesity and Eating Habits Research Centre, Endocrinology and Metabolism Molecular-Cellular Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran
- Department of Community Nutrition, School of Nutrition and Food Science, Isfahan University of Medical Sciences, Isfahan, Iran
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16
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Chadaeva IV, Rasskazov DA, Sharypova EB, Drachkova IA, Oshchepkova EA, Savinkova LK, Ponomarenko PM, Ponomarenko MP, Kolchanov NA, Kozlov VA. Сandidate SNP-markers of rheumatoid arthritis that can significantly alter the affinity of the TATA-binding protein for human gene promoters. Vavilovskii Zhurnal Genet Selektsii 2020. [DOI: 10.18699/vj19.586] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
Rheumatoid polyarthritis (RA) is an autoimmune disease with autoantibodies, including antibodies to citrullant antigens and proinflammatory cytokines, such as TNF-α and IL-6, which are involved in the induction of chronic synovitis, bone erosion, followed by deformity. Immunopathogenesis is based on the mechanisms of the breakdown of immune tolerance to its own antigens, which is characterized by an increase in the activity of T-effector cells, causing RA symptomatology. At the same time, against the background of such increased activity of effector lymphocytes, a decrease in the activity of a number of regulatory cells, including regulatory T-cells (Treg) and myeloid suppressor cells, is recorded. There is reason to say that it is the change in the activity of suppressor cells that is the leading element in RA pathogenesis. That is why only periods of weakening (remission) of RA are spoken of. According to the more powerful female immune system compared to the male one, the risk of developing RA in women is thrice as high, this risk decreases during breastfeeding and grows during pregnancy as well as after menopause in proportion to the level of sex hormones. It is believed that 50 % of the risk of developing RA depends on the conditions and lifestyle, while the remaining 50 % is dependent on genetic predisposition. That is why, RA fits the main idea of postgenomic predictive-preventive personalized medicine that is to give a chance to those who would like to reduce his/her risk of diseases by bringing his/her conditions and lifestyle in line with the data on his/her genome sequenced. This is very important, since doctors consider RA as one of the most frequent causes of disability. Using the Web service SNP_TATA_Z-tester (http://beehive.bionet.nsc.ru/cgi-bin/mgs/tatascan_fox/start.pl), 227 variants of single nucleotide polymorphism (SNP) of the human gene promoters were studied. As a result, 43 candidate SNP markers for RA that can alter the affinity of the TATA-binding protein (TBP) for the promoters of these genes were predicted.
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Affiliation(s)
- I. V. Chadaeva
- Institute of Cytology and Genetics, SB RAS; Novosibirsk State University
| | | | | | | | | | | | | | - M. P. Ponomarenko
- Institute of Cytology and Genetics, SB RAS; Novosibirsk State University
| | - N. A. Kolchanov
- Institute of Cytology and Genetics, SB RAS; Novosibirsk State University
| | - V. A. Kozlov
- Research Institute of Fundamental and Clinical Immunology
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17
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Lu ZX, He JF, Zhang YC, Bing DJ. Composition, physicochemical properties of pea protein and its application in functional foods. Crit Rev Food Sci Nutr 2019; 60:2593-2605. [PMID: 31429319 DOI: 10.1080/10408398.2019.1651248] [Citation(s) in RCA: 115] [Impact Index Per Article: 23.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Field pea is one of the most important leguminous crops over the world. Pea protein is a relatively new type of plant proteins and has been used as a functional ingredient in global food industry. Pea protein includes four major classes (globulin, albumin, prolamin, and glutelin), in which globulin and albumin are major storage proteins in pea seeds. Globulin is soluble in salt solutions and can be further classified into legumin and vicilin. Albumin is soluble in water and regarded as metabolic and enzymatic proteins with cytosolic functions. Pea protein has a well-balanced amino acid profile with high level of lysine. The composition and structure of pea protein, as well as the processing conditions, significantly affect its physical and chemical properties, such as hydration, rheological characteristics, and surface characteristics. With its availability, low cost, nutritional values and health benefits, pea protein can be used as a novel and effective alternative to substitute for soybean or animal proteins in functional food applications.
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Affiliation(s)
- Z X Lu
- Lethbridge Research and Development Centre, Agriculture and Agri-Food Canada, Lethbridge, Alberta, Canada
| | - J F He
- Inner Mongolia Academy of Agriculture and Animal Husbandry Sciences, Hohhot, Inner Mongolia, P.R. China
| | - Y C Zhang
- Lethbridge Research and Development Centre, Agriculture and Agri-Food Canada, Lethbridge, Alberta, Canada
| | - D J Bing
- Lacombe Research and Development Centre, Agriculture and Agri-Food Canada, Lacombe, Alberta, Canada
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18
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Kahleova H, Fleeman R, Hlozkova A, Holubkov R, Barnard ND. A plant-based diet in overweight individuals in a 16-week randomized clinical trial: metabolic benefits of plant protein. Nutr Diabetes 2018; 8:58. [PMID: 30405108 PMCID: PMC6221888 DOI: 10.1038/s41387-018-0067-4] [Citation(s) in RCA: 70] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/05/2018] [Revised: 09/27/2018] [Accepted: 10/13/2018] [Indexed: 11/13/2022] Open
Abstract
Background and objectives A plant-based diet is an effective strategy in the treatment of obesity. In this 16-week randomized clinical trial, we tested the effect of a plant-based diet on body composition and insulin resistance. As a part of this trial, we investigated the role of plant protein on these outcomes. Subjects and methods Overweight participants (n = 75) were randomized to follow a plant-based (n = 38) or a control diet (n = 37). Dual X-ray Absorptiometry assessed body composition, Homeostasis Model Assessment (HOMA-IR) assessed insulin resistance, and a linear regression model was used to test the relationship between protein intake, body composition, and insulin resistance. Results The plant-based vegan diet proved to be superior to the control diet in improving body weight, fat mass, and insulin resistance markers. Only the vegan group showed significant reductions in body weight (treatment effect −6.5 [95% CI −8.9 to −4.1] kg; Gxt, p < 0.001), fat mass (treatment effect −4.3 [95% CI −5.4 to −3.2] kg; Gxt, p < 0.001), and HOMA-IR (treatment effect −1.0 [95% CI −1.2 to −0.8]; Gxt, p = 0.004). The decrease in fat mass was associated with an increased intake of plant protein and decreased intake of animal protein (r = -0.30, p = 0.011; and r = +0.39, p = 0.001, respectively). In particular, decreased % leucine intake was associated with a decrease in fat mass (r = +0.40; p < 0.001), in both unadjusted and adjusted models for changes in BMI and energy intake. In addition, decreased % histidine intake was associated with a decrease in insulin resistance (r = +0.38; p = 0.003), also independent of changes in BMI and energy intake. Conclusions These findings provide evidence that plant protein, as a part of a plant-based diet, and the resulting limitation of leucine and histidine intake are associated with improvements in body composition and reductions in both body weight and insulin resistance.
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Affiliation(s)
- Hana Kahleova
- Physicians Committee for Responsible Medicine, 5100 Wisconsin Ave, N.W. Ste.400, Washington, DC, 20016, USA.
| | - Rebecca Fleeman
- Physicians Committee for Responsible Medicine, 5100 Wisconsin Ave, N.W. Ste.400, Washington, DC, 20016, USA
| | - Adela Hlozkova
- Physicians Committee for Responsible Medicine, 5100 Wisconsin Ave, N.W. Ste.400, Washington, DC, 20016, USA
| | - Richard Holubkov
- School of Medicine, University of Utah, Salt Lake City, UT, 84132, USA
| | - Neal D Barnard
- Physicians Committee for Responsible Medicine, 5100 Wisconsin Ave, N.W. Ste.400, Washington, DC, 20016, USA.,Adjunct Faculty, George Washington University School of Medicine and Health Sciences, Washington, DC, 20016, USA
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19
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Tang W, Chen S, Liu J, Liu C, Wang Y, Kang M. Investigation of IGF1, IGF2BP2, and IGFBP3 variants with lymph node status and esophagogastric junction adenocarcinoma risk. J Cell Biochem 2018; 120:5510-5518. [PMID: 30335898 PMCID: PMC6587846 DOI: 10.1002/jcb.27834] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2018] [Accepted: 09/14/2018] [Indexed: 12/12/2022]
Abstract
Esophagogastric junction adenocarcinoma (EGJA) may be associated with obesity and overweight. Thus, any variant in energy metabolism–related gene may influence the development of EGJA. In this study, we recruited 720 EGJA cases and 1541 noncancer controls. We selected IGF2BP2 rs4402960 G > T, rs1470579 A > C,
IGF1 rs5742612 A > G and
IGFBP3 rs3110697 G > A, rs2270628 C > T and rs6953668 G > A loci and assessed the relationship of these polymorphisms with lymph node status and susceptibility of EGJA. We found that
IGF2BP2 rs1470579 A > C and
IGFBP3 rs6953668 G > A polymorphisms were associated with the decreased risk of EGJA (
IGF2BP2 rs1470579: CC vs AA: adjusted odds ratio [OR] = 0.65, 95% confidence interval [CI] = 0.43‐0.98,
P = 0.041 and CC vs AA/AC: adjusted OR = 0.62, 95% CI = 0.41‐0.93,
P = 0.021 and
IGFBP3 rs6953668: GA vs GG: adjusted OR = 0.66, 95% CI = 0.47‐0.93,
P = 0.019 and GA/AA vs GG: adjusted OR = 0.68, 95% CI = 0.48‐0.95,
P = 0.026). However, we also found that
IGF1 rs5742612 A > G polymorphism increased the risk of LNM among patients with EGJA (GG vs AA: adjusted OR = 1.88, 95% CI = 1.02‐3.46,
P = 0.042 and GG vs AA/AG: adjusted OR = 1.92, 95% CI = 1.06‐3.47,
P = 0.032). This study suggests that
IGF2BP2 rs1470579 A > C and
IGFBP3 rs6953668 G > A polymorphisms may decrease genetic susceptibility to EGJA in eastern Chinese Han population. In addition, our findings also indicate that
IGF1 rs5742612 A > G polymorphism may increase the susceptibility of LNM among patients with EGJA.
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Affiliation(s)
- Weifeng Tang
- Department of Cardiothoracic Surgery, Affiliated People's Hospital of Jiangsu University, Zhenjiang, Jiangsu, China
| | - Shuchen Chen
- Department of Thoracic Surgery, Fujian Medical University Union Hospital, Fuzhou, Fujian, China.,Key Laboratory of Ministry of Education for Gastrointestinal Cancer, Fujian Medical University, Fuzhou, Fujian, China.,Fujian Key Laboratory of Tumor Microbiology, Fujian Medical University, Fuzhou, Fujian, China
| | - Jun Liu
- Central Lab, First Affiliated Hospital of Fujian Medical University, Fuzhou, Fujian, China
| | - Chao Liu
- Department of Cardiothoracic Surgery, Affiliated People's Hospital of Jiangsu University, Zhenjiang, Jiangsu, China
| | - Yafeng Wang
- Department of Cardiology, The People's Hospital of Xishuangbanna Dai Autonomous Prefecture, Jinghong, Yunnan, China
| | - Mingqiang Kang
- Department of Thoracic Surgery, Fujian Medical University Union Hospital, Fuzhou, Fujian, China.,Key Laboratory of Ministry of Education for Gastrointestinal Cancer, Fujian Medical University, Fuzhou, Fujian, China.,Fujian Key Laboratory of Tumor Microbiology, Fujian Medical University, Fuzhou, Fujian, China
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20
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Lan Y, Chen B, Rao J. Pea protein isolate–high methoxyl pectin soluble complexes for improving pea protein functionality: Effect of pH, biopolymer ratio and concentrations. Food Hydrocoll 2018. [DOI: 10.1016/j.foodhyd.2018.02.021] [Citation(s) in RCA: 113] [Impact Index Per Article: 18.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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21
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Valachovičová M, Príbojová J, Urbánek V, Bírošová L. Selected Cardiovascular Risk Markers in Vegetarians and Subjects of General Population. Cent Eur J Public Health 2018; 25:299-302. [PMID: 29346853 DOI: 10.21101/cejph.a4529] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
OBJECTIVE Besides genetic factors there are environmental effects including nutritional habits which can influence the risk of age-related diseases. The aim of the study was to assess the age dependence of selected cardiovascular risk markers in two groups of subjects with different nutritional pattern. METHODS In 470 long-term vegetarians and 478 subjects of general population the following indicators were measured: total cholesterol, HDL-cholesterol, triacylglycerol, glucose, insulin concentrations, LDL-cholesterol, atherogenic index and insulin resistance IR(HOMA) were also calculated in studied subjects. Obtained data were evaluated according to age decades. RESULTS Vegetarian vs. non-vegetarian concentrations of total cholesterol, LDL-cholesterol, insulin, and values of atherogenic index and IR(HOMA) were significantly reduced in all age decades. Vegetarian vs. non-vegetarian triacalglycerol concentrations were significantly reduced from 4th–7th decade. Vegetarian average decade values of all lipid parameters were in reference range. In non-vegetarian group, the risk average values of total cholesterol (>5.2 mmol/l) were found from 5th–7th decade, LDL-cholesterol (>3.3 mmol/l) in 7th decade and atherogenic index (>4) in 6th–7th decade. In vegetarians vs. non-vegetarians were noted the average decade values for total cholesterol ranging from 4.01–4.59 vs. 4.48–5.67 mmol/l, for triacylglycerols 1.00–1.33 vs. 1.13–1.74 mmol/l, for LDL-cholesterol 2.03–2.58 vs. 2.43–3.49 mmol/l, for atherogenic index 2.72–3.31 vs. 3.05–4.21 and for IR(HOMA) 0.99–1.15 vs. 1.15–1.84. CONCLUSION Our data show significantly reduced mean age decade values of lipid and non-lipid cardiovascular risk markers in all adult vegetarians. Smaller changes of markers between decades compared to non-vegetarians document a protective effect of vegetarian nutrition in prevention of cardiovascular disease.
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Affiliation(s)
| | | | | | - Lucia Bírošová
- Department of Nutrition and Food Quality Assessment, Faculty of Chemical and Food Technology, Slovak University of Technology in Bratislava, Bratislava, Slovak Republic
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22
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Kahleova H, Levin S, Barnard N. Cardio-Metabolic Benefits of Plant-Based Diets. Nutrients 2017; 9:nu9080848. [PMID: 28792455 PMCID: PMC5579641 DOI: 10.3390/nu9080848] [Citation(s) in RCA: 149] [Impact Index Per Article: 21.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2017] [Revised: 07/30/2017] [Accepted: 08/03/2017] [Indexed: 12/26/2022] Open
Abstract
Cardio-metabolic disease, namely ischemic heart disease, stroke, obesity, and type 2 diabetes, represent substantial health and economic burdens. Almost one half of cardio-metabolic deaths in the U.S. might be prevented through proper nutrition. Plant-based (vegetarian and vegan) diets are an effective strategy for improving nutrient intake. At the same time, they are associated with decreased all-cause mortality and decreased risk of obesity, type 2 diabetes, and coronary heart disease. Evidence suggests that plant-based diets may reduce the risk of coronary heart disease events by an estimated 40% and the risk of cerebral vascular disease events by 29%. These diets also reduce the risk of developing metabolic syndrome and type 2 diabetes by about one half. Properly planned vegetarian diets are healthful, effective for weight and glycemic control, and provide metabolic and cardiovascular benefits, including reversing atherosclerosis and decreasing blood lipids and blood pressure. The use of plant-based diets as a means of prevention and treatment of cardio-metabolic disease should be promoted through dietary guidelines and recommendations.
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Affiliation(s)
- Hana Kahleova
- Physicians Committee for Responsible Medicine, 5100 Wisconsin Ave, N.W. Ste.400, Washington, DC 20016, USA.
| | - Susan Levin
- Physicians Committee for Responsible Medicine, 5100 Wisconsin Ave, N.W. Ste.400, Washington, DC 20016, USA.
| | - Neal Barnard
- Physicians Committee for Responsible Medicine, 5100 Wisconsin Ave, N.W. Ste.400, Washington, DC 20016, USA.
- George Washington University School of Medicine and Health Sciences, Washington, DC 20052, USA.
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23
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Chen JH, Song J, Chen Y, Ding Q, Peng A, Mao L. The Effect of Vegan Protein-Based Diets on Metabolic Parameters, Expressions of Adiponectin and Its Receptors in Wistar Rats. Nutrients 2016; 8:nu8100643. [PMID: 27763537 PMCID: PMC5084030 DOI: 10.3390/nu8100643] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2016] [Revised: 10/01/2016] [Accepted: 10/11/2016] [Indexed: 11/16/2022] Open
Abstract
Vegan protein-based diet has attracted increasing interest in the prevention of metabolic syndrome (MetS). Meanwhile, adiponectin has become a highly potential molecular target in the prevention of MetS. Our study will identify a potential vegan protein diet for the prevention of MetS using rat models. Thirty-six Wistar rats were randomly assigned into three groups and given diets containing one of the following proteins for 12 weeks: casein (CAS, control diet), soy protein (SOY), and gluten-soy mixed protein (GSM). Changes in metabolic parameters as well as the expressions of adiponectin and its receptors were identified. Compared to CAS diet, both SOY and GSM diets led to decreases in blood total cholesterol and triglycerides, but only GSM diet led to an increase in HDL-cholesterol; no marked difference was observed in blood glucose in all three groups; HOMA-IR was found lower only in SOY group. Among groups, the order of serum adiponectin level was found as GSM > SOY > CAS. Similar order pattern was also observed in expression of adiponectin in adipose tissue and AdipoR1 mRNA in skeletal muscle. Our results suggested for the first time that, besides SOY diet, GSM diet could also be a possible substitute of animal protein to prevent MetS.
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Affiliation(s)
- Jie-Hua Chen
- Department of Nutrition and Food Hygiene, Guangdong Provincial Key Laboratory of Tropical Disease Research, School of Public Health, Southern Medical University, Guangzhou 510515, Guangdong, China.
| | - Jia Song
- Department of Nutrition and Food Hygiene, Guangdong Provincial Key Laboratory of Tropical Disease Research, School of Public Health, Southern Medical University, Guangzhou 510515, Guangdong, China.
| | - Yan Chen
- Department of Nutrition and Food Hygiene, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, Hubei, China.
| | - Qiang Ding
- Department of Nutrition and Food Hygiene, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, Hubei, China.
| | - Anfang Peng
- Department of Nutrition and Food Hygiene, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, Hubei, China.
| | - Limei Mao
- Department of Nutrition and Food Hygiene, Guangdong Provincial Key Laboratory of Tropical Disease Research, School of Public Health, Southern Medical University, Guangzhou 510515, Guangdong, China.
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Abstract
Among cancers in American women, breast cancer (BC) has the second highest incidence and mortality. The association of BC with diet has been inconsistent. Studies that evaluate associations with dietary patterns are less common and reflect an individual's whole diet. We associated dietary patterns with the risk of BC in American women of the Adventist Health Study-2 (AHS-2), a prospective cohort of 96 001 subjects recruited between 2002 and 2007. Answers to a previously validated FFQ were used to classify subjects to vegan, lacto-ovo-vegetarian, pesco-vegetarian, semi-vegetarian and non-vegetarian dietary patterns. Incident BC were identified by matching AHS-2 subjects to data from forty-eight state cancer registries. Statistical analyses used proportional hazard regression analyses with covariates that were chosen a priori. From 50 404 female participants (26 193 vegetarians), we identified 892 incident BC cases, with 478 cases among vegetarians. As compared with non-vegetarians, all vegetarians combined did not have a significantly lower risk (hazard ratio (HR) 0·97; CI 0·84, 1·11; P=0·64). However, vegans showed consistently lower (but non-significant) point estimates when compared with non-vegetarians (all cases: HR 0·78; CI 0·58, 1·05; P=0·09). In summary, participants in this cohort who follow a vegetarian dietary pattern did not experience a lower risk of BC as compared with non-vegetarians, although lower risk in vegans is possible. These findings add to the very limited literature associating vegetarian diets with BC risk and can assist nutritionists when evaluating the impact of these diets. The findings will also motivate further evaluation of vegan diets and their special characteristics.
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Tantamango-Bartley Y, Knutsen SF, Knutsen R, Jacobsen BK, Fan J, Beeson WL, Sabate J, Hadley D, Jaceldo-Siegl K, Penniecook J, Herring P, Butler T, Bennett H, Fraser G. Are strict vegetarians protected against prostate cancer? Am J Clin Nutr 2016; 103:153-60. [PMID: 26561618 PMCID: PMC4691666 DOI: 10.3945/ajcn.114.106450] [Citation(s) in RCA: 61] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2015] [Accepted: 09/23/2015] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND According to the American Cancer Society, prostate cancer accounts for ∼27% of all incident cancer cases among men and is the second most common (noncutaneous) cancer among men. The relation between diet and prostate cancer is still unclear. Because people do not consume individual foods but rather foods in combination, the assessment of dietary patterns may offer valuable information when determining associations between diet and prostate cancer risk. OBJECTIVE This study aimed to examine the association between dietary patterns (nonvegetarian, lacto-ovo-vegetarian, pesco-vegetarian, vegan, and semi-vegetarian) and prostate cancer incidence among 26,346 male participants of the Adventist Health Study-2. DESIGN In this prospective cohort study, cancer cases were identified by matching to cancer registries. Cox proportional hazards regression analysis was performed to estimate HRs by using age as the time variable. RESULTS In total, 1079 incident prostate cancer cases were identified. Around 8% of the study population reported adherence to the vegan diet. Vegan diets showed a statistically significant protective association with prostate cancer risk (HR: 0.65; 95% CI: 0.49, 0.85). After stratifying by race, the statistically significant association with a vegan diet remained only for the whites (HR: 0.63; 95% CI: 0.46, 0.86), but the multivariate HR for black vegans showed a similar but nonsignificant point estimate (HR: 0.69; 95% CI: 0.41, 1.18). CONCLUSION Vegan diets may confer a lower risk of prostate cancer. This lower estimated risk is seen in both white and black vegan subjects, although in the latter, the CI is wider and includes the null.
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Affiliation(s)
| | - Synnove F Knutsen
- School of Public Health, Center for Nutrition, Healthy Lifestyle and Disease Prevention and
| | - Raymond Knutsen
- School of Public Health, Center for Nutrition, Healthy Lifestyle and Disease Prevention and
| | - Bjarne K Jacobsen
- School of Public Health, Center for Nutrition, Healthy Lifestyle and Disease Prevention and Department of Community Medicine, Universitetet i Tromsø, The Arctic University of Norway, Tromsø, Norway
| | - Jing Fan
- School of Public Health, Center for Nutrition, Healthy Lifestyle and Disease Prevention and
| | - W Lawrence Beeson
- School of Public Health, Center for Nutrition, Healthy Lifestyle and Disease Prevention and
| | - Joan Sabate
- School of Public Health, Center for Nutrition, Healthy Lifestyle and Disease Prevention and
| | - David Hadley
- School of Medicine, Department of Urology, Loma Linda University, Loma Linda, CA; and
| | - Karen Jaceldo-Siegl
- School of Public Health, Center for Nutrition, Healthy Lifestyle and Disease Prevention and
| | - Jason Penniecook
- School of Public Health, Center for Nutrition, Healthy Lifestyle and Disease Prevention and
| | - Patti Herring
- School of Public Health, Center for Nutrition, Healthy Lifestyle and Disease Prevention and
| | - Terry Butler
- School of Public Health, Center for Nutrition, Healthy Lifestyle and Disease Prevention and
| | - Hanni Bennett
- School of Public Health, Center for Nutrition, Healthy Lifestyle and Disease Prevention and
| | - Gary Fraser
- School of Public Health, Center for Nutrition, Healthy Lifestyle and Disease Prevention and
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Kim MH, Bae YJ. Comparative Study of Serum Leptin and Insulin Resistance Levels Between Korean Postmenopausal Vegetarian and Non-vegetarian Women. Clin Nutr Res 2015; 4:175-81. [PMID: 26251836 PMCID: PMC4525134 DOI: 10.7762/cnr.2015.4.3.175] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2015] [Revised: 07/07/2015] [Accepted: 07/09/2015] [Indexed: 12/17/2022] Open
Abstract
The present study was conducted to compare serum leptin and insulin resistance levels between Korean postmenopausal long-term semi-vegetarians and non-vegetarians. Subjects of this study belonged to either a group of postmenopausal vegetarian women (n = 54), who maintained a semi-vegetarian diet for over 20 years or a group of non-vegetarian controls. Anthropometric characteristics, serum leptin, serum glucose, serum insulin, insulin resistance (HOMA-IR; Homeostasis Model Assessment of Insulin Resistance), and nutrient intake were compared between the two groups. The vegetarians showed significantly lower body weight (p < 0.01), body mass index (p < 0.001), percentage (%) of body fat (p < 0.001), and serum levels of leptin (p < 0.05), glucose (p < 0.001), and insulin (p < 0.01), than the non-vegetarians. The HOMA-IR of the vegetarians was significantly lower than that of the non-vegetarians (p < 0.01) after adjustment for the % of body fat. A long-term vegetarian diet might be related to lower insulin resistance independent of the % of body fat in postmenopausal women.
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Affiliation(s)
- Mi-Hyun Kim
- Department of Food and Nutrition, Korea National University of Transportation, Jeungpyeong 368-701, Korea
| | - Yun-Jung Bae
- Division of Food Science and Culinary Arts, Shinhan University, Uijeongbu 480-701, Korea
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Kahleova H, Pelikanova T. Vegetarian Diets in the Prevention and Treatment of Type 2 Diabetes. J Am Coll Nutr 2015; 34:448-58. [DOI: 10.1080/07315724.2014.976890] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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NADPH Oxidase Activity in Cerebral Arterioles Is a Key Mediator of Cerebral Small Vessel Disease-Implications for Prevention. Healthcare (Basel) 2015; 3:233-51. [PMID: 27417759 PMCID: PMC4939544 DOI: 10.3390/healthcare3020233] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2014] [Revised: 03/21/2015] [Accepted: 04/08/2015] [Indexed: 02/05/2023] Open
Abstract
Cerebral small vessel disease (SVD), a common feature of brain aging, is characterized by lacunar infarcts, microbleeds, leukoaraiosis, and a leaky blood-brain barrier. Functionally, it is associated with cognitive decline, dementia, depression, gait abnormalities, and increased risk for stroke. Cerebral arterioles in this syndrome tend to hypertrophy and lose their capacity for adaptive vasodilation. Rodent studies strongly suggest that activation of Nox2-dependent NADPH oxidase activity is a crucial driver of these structural and functional derangements of cerebral arterioles, in part owing to impairment of endothelial nitric oxide synthase (eNOS) activity. This oxidative stress may also contribute to the breakdown of the blood-brain barrier seen in SVD. Hypertension, aging, metabolic syndrome, smoking, hyperglycemia, and elevated homocysteine may promote activation of NADPH oxidase in cerebral arterioles. Inhibition of NADPH oxidase with phycocyanobilin from spirulina, as well as high-dose statin therapy, may have potential for prevention and control of SVD, and high-potassium diets merit study in this regard. Measures which support effective eNOS activity in other ways-exercise training, supplemental citrulline, certain dietary flavonoids (as in cocoa and green tea), and capsaicin, may also improve the function of cerebral arterioles. Asian epidemiology suggests that increased protein intakes may decrease risk for SVD; conceivably, arginine and/or cysteine-which boosts tissue glutathione synthesis, and can be administered as N-acetylcysteine-mediate this benefit. Ameliorating the risk factors for SVD-including hypertension, metabolic syndrome, hyperglycemia, smoking, and elevated homocysteine-also may help to prevent and control this syndrome, although few clinical trials have addressed this issue to date.
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Abstract
Diet is established among the most important influences on health in modern societies. Injudicious diet figures among the leading causes of premature death and chronic disease. Optimal eating is associated with increased life expectancy, dramatic reduction in lifetime risk of all chronic disease, and amelioration of gene expression. In this context, claims abound for the competitive merits of various diets relative to one another. Whereas such claims, particularly when attached to commercial interests, emphasize distinctions, the fundamentals of virtually all eating patterns associated with meaningful evidence of health benefit overlap substantially. There have been no rigorous, long-term studies comparing contenders for best diet laurels using methodology that precludes bias and confounding, and for many reasons such studies are unlikely. In the absence of such direct comparisons, claims for the established superiority of any one specific diet over others are exaggerated. The weight of evidence strongly supports a theme of healthful eating while allowing for variations on that theme. A diet of minimally processed foods close to nature, predominantly plants, is decisively associated with health promotion and disease prevention and is consistent with the salient components of seemingly distinct dietary approaches. Efforts to improve public health through diet are forestalled not for want of knowledge about the optimal feeding of Homo sapiens but for distractions associated with exaggerated claims, and our failure to convert what we reliably know into what we routinely do. Knowledge in this case is not, as of yet, power; would that it were so.
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Affiliation(s)
- D L Katz
- Prevention Research Center, Yale University School of Public Health, Griffin Hospital, Derby, Connecticut 06418;
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Thorisdottir B, Gunnarsdottir I, Palsson GI, Halldorsson TI, Thorsdottir I. Animal protein intake at 12 months is associated with growth factors at the age of six. Acta Paediatr 2014; 103:512-7. [PMID: 24471761 DOI: 10.1111/apa.12576] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/11/2013] [Revised: 11/27/2013] [Accepted: 01/22/2014] [Indexed: 11/27/2022]
Abstract
AIM To study the associations between protein intake from different sources with anthropometry and serum insulin-like growth factor 1 (IGF-1) in infancy and childhood. METHODS Children (n = 199) born in Iceland were followed up to six years of age. Their intake of various animal proteins and vegetable protein was calculated from weighed food records at 12 months and 6 years. Information about their weight and height at birth, 12 and 18 months, and 6 years was gathered. Serum IGF-1 was measured at 12 months and 6 years. RESULTS At the age of six, children in the highest quartile for animal protein intake at 12 months (≥12.2% of total energy) had 0.8 kg/m(2) (95% CI = 0.1, 1.5) higher body mass index (BMI) than children in the lowest quartile (<7.6% of total energy). They were also heavier and longer in infancy and childhood. At 12 months, dairy protein intake as a percentage of total energy was associated with IGF-1 in six-year-old girls, β = 5.4 μg/L (95% CI = 2.5, 8.2). CONCLUSION High animal protein intake in infancy, but not vegetable protein intake, was associated with accelerated growth and higher BMI in childhood. Dairy protein intake in infancy may be positively associated with linear growth and also with IGF-1 in six-year-old girls.
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Affiliation(s)
- Birna Thorisdottir
- Unit for Nutrition Research; Landspitali University Hospital & Faculty of Food Science and Nutrition; School of Health Sciences; University of Iceland; Reykjavik Iceland
| | - Ingibjorg Gunnarsdottir
- Unit for Nutrition Research; Landspitali University Hospital & Faculty of Food Science and Nutrition; School of Health Sciences; University of Iceland; Reykjavik Iceland
| | | | - Thorhallur Ingi Halldorsson
- Unit for Nutrition Research; Landspitali University Hospital & Faculty of Food Science and Nutrition; School of Health Sciences; University of Iceland; Reykjavik Iceland
| | - Inga Thorsdottir
- Unit for Nutrition Research; Landspitali University Hospital & Faculty of Food Science and Nutrition; School of Health Sciences; University of Iceland; Reykjavik Iceland
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Tantamango-Bartley Y, Jaceldo-Siegl K, Fan J, Fraser G. Vegetarian diets and the incidence of cancer in a low-risk population. Cancer Epidemiol Biomarkers Prev 2012; 22:286-94. [PMID: 23169929 DOI: 10.1158/1055-9965.epi-12-1060] [Citation(s) in RCA: 135] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
BACKGROUND Cancer is the second leading cause of death in the United States. Dietary factors account for at least 30% of all cancers in Western countries. As people do not consume individual foods but rather combinations of them, the assessment of dietary patterns may offer valuable information when determining associations between diet and cancer risk. METHODS We examined the association between dietary patterns (non-vegetarians, lacto, pesco, vegan, and semi-vegetarian) and the overall cancer incidence among 69,120 participants of the Adventist Health Study-2. Cancer cases were identified by matching to cancer registries. Cox proportional hazard regression analysis was conducted to estimate hazard ratios, with "attained age" as the time variable. RESULTS A total of 2,939 incident cancer cases were identified. The multivariate HR of overall cancer risk among vegetarians compared with non-vegetarians was statistically significant [HR, 0.92; 95% confidence interval (CI), 0.85-0.99] for both genders combined. Also, a statistically significant association was found between vegetarian diet and cancers of the gastrointestinal tract (HR, 0.76; 95% CI, 0.63-0.90). When analyzing the association of specific vegetarian dietary patterns, vegan diets showed statistically significant protection for overall cancer incidence (HR, 0.84; 95% CI, 0.72-0.99) in both genders combined and for female-specific cancers (HR, 0.66; 95% CI, 0.47-0.92). Lacto-ovo-vegetarians appeared to be associated with decreased risk of cancers of the gastrointestinal system (HR, 0.75; 95% CI, 0.60-0.92). CONCLUSION Vegetarian diets seem to confer protection against cancer. IMPACT Vegan diet seems to confer lower risk for overall and female-specific cancer than other dietary patterns. The lacto-ovo-vegetarian diets seem to confer protection from cancers of the gastrointestinal tract.
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Affiliation(s)
- Yessenia Tantamango-Bartley
- Department of Epidemiology and Biostatistics, Loma Linda University, School of Public Health, Loma Linda, CA 92350, USA.
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Lin Y, Bolca S, Vandevijvere S, Van Oyen H, Van Camp J, De Backer G, Foo LH, De Henauw S, Huybrechts I. Dietary sources of animal and plant protein intake among Flemish preschool children and the association with socio-economic and lifestyle-related factors. Nutr J 2011; 10:97. [PMID: 21943312 PMCID: PMC3191475 DOI: 10.1186/1475-2891-10-97] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2011] [Accepted: 09/25/2011] [Indexed: 11/25/2022] Open
Abstract
Background The aims of this study were to assess the intake of animal, plant and food group-specific protein, and to investigate their associations with socio-economic and lifestyle-related factors in Flemish preschoolers. Methods Three-day estimated dietary records were collected from 661 preschoolers aged 2.5-6.5 y (338 boys and 323 girls). Multiple linear regression analysis was used to investigate the association between animal, plant, and food group-specific protein intake and socio-economic and lifestyle factors. Results Animal proteins (mean 38 g/d) were the main source of total protein (mean 56 g/d), while mean plant protein intake amounted to 18 g/d. The group of meat, poultry, fish and eggs was the main contributor (51%) to animal protein intake, followed by milk and milk products (35%). Bread and cereals (41%) contributed most to the plant protein intake, followed by low-nutritious, energy-dense foods (21%). With higher educated fathers and mothers as reference, respectively, preschoolers with lower secondary and secondary paternal education had lower animal, dairy-, and meat-derived protein intakes, and those with lower secondary and secondary maternal education consumed less plant, and bread and cereal-derived proteins. Compared to children with high physical activity levels, preschoolers with low and moderate physical activity had lower animal and plant protein intakes. Significantly higher potatoes and grains-, and fish- derived proteins were reported for children of smoking mothers and fathers, respectively, compared to those of non-smoking mothers and fathers. Conclusions The total protein intake of Flemish preschoolers was sufficient according to the recommendations of the Belgian Superior Health Council. Parental level of education and smoking status might play a role in the sources of children's dietary proteins.
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Affiliation(s)
- Yi Lin
- Unit Nutrition and Food Safety, Department of Public Health, Ghent University, De Pintelaan 185, B-9000 Ghent, Belgium
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Kudlackova M, Valachovičová M, Babinská K, Blažíček P, Spoustová V, Pauková V. Nutritional status of subjects with dominant plant food consumption. POTRAVINARSTVO 2011. [DOI: 10.5219/148] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
In three groups of apparently healthy subjects – vegetarians (plant food, dairy products, eggs), semi-vegetarians (as vegetarians with addition of white meat consumption) and non-vegetarians (control group on traditional mixed diet) were analyzed the dietary questionnaires of consumption frequency and measured the values of lipid profile, insulin resistance, homocysteine with determinants (vitamins B6, B9, B12) and plasma antioxidative vitamins (C,E, beta-carotene). Vegetarians and semi-vegetarians consumed the significantly reduced amount of cholesterol, saturated fatty acids, methionine, lysine, vitamin B12 and on the other hand, they have the significantly higher daily intake of polyunsaturated fatty acids, linoleic acid, alpha-linolenic acid, fiber, plant proteins, arginine, glycine, serine, alanine, folic acid (vitamin B9), vitamin B6, vitamins C,E and beta-carotene. Alternative nutrition groups vs. non-vegetarians have the significantly reduced concentrations of total and LDL-cholesterol, triacylglycerols, insulin as well as values of atherogenic index and insulin resistance. The vegetarian (but not semi-vegetarian) value of homocysteine is significantly increased as a consequence of the significantly reduced and low concentration of vitamin B12. Other two determinants of homocysteine degradation were significantly increased in serum of alternative nutrition groups. The both vegetarian groups have the significantly higher plasma concentrations of antioxidative vitamins and these values are in range of effective free radical disease reduction. The results of favourable values of cardiovascular risk markers and antioxidants document a beneficial effect of vegetarian nutrition in prevention of degenerative age-related diseases.
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Hazbun OM, Azcona C, Alfredo Martínez J, Martí A. Management of overweight and obesity in adolescents: an integral lifestyle approach. ACTA ACUST UNITED AC 2009. [DOI: 10.1016/s1138-0322(09)73427-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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35
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Grant WB. A Multi-country Ecological Study of Dietary Risk and Risk-reduction Factors for Prostate Cancer. ACTA ACUST UNITED AC 2009. [DOI: 10.1080/1359084021000006803] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Newby PK. Plant foods and plant-based diets: protective against childhood obesity? Am J Clin Nutr 2009; 89:1572S-1587S. [PMID: 19321559 DOI: 10.3945/ajcn.2009.26736g] [Citation(s) in RCA: 104] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
The objective of this article is to review the epidemiologic literature examining the role of plant foods and plant-based diets in the prevention of childhood obesity. Available data suggest a protective effect of ready-to-eat cereal on risk of obesity, although prospective studies are still needed. Studies on fruit and vegetables; grains other than cereal; high-protein foods, including beans, legumes, and soy; fiber; and plant-based dietary patterns are inconsistent or generally null. The evidence base is limited, and most studies are fraught with methodologic limitations, including cross-sectional design, inadequate adjustment for potential confounders, and lack of consideration of reporting errors, stage of growth, and genetic influences. Well-designed prospective studies are needed. The lack of evidence showing an association between plant-based diets and childhood obesity does not mean that such diets should not be encouraged. Plant foods are highlighted in the Dietary Guidelines for Americans, and children do not meet the current recommendations for most plant foods. Although the advice to consume a plant-based, low-energy-dense diet is sound, ethical questions arise concerning the relatively high price of these diets in the United States and the way in which such diets are perceived in other parts of the world. Reducing the burden of childhood obesity, eliminating health disparities, and preventing the further spread of the disease around the globe will require not only policy interventions to ensure that plant foods are affordable and accessible to children of all income levels but also awareness of sociocultural norms that affect consumption.
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Affiliation(s)
- P K Newby
- Boston University School of Medicine, Boston University School of Public Health, Boston, MA, USA.
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Denysschen CA, Burton HW, Horvath PJ, Leddy JJ, Browne RW. Resistance training with soy vs whey protein supplements in hyperlipidemic males. J Int Soc Sports Nutr 2009; 6:8. [PMID: 19284589 PMCID: PMC2660282 DOI: 10.1186/1550-2783-6-8] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2009] [Accepted: 03/11/2009] [Indexed: 01/09/2023] Open
Abstract
Background Most individuals at risk for developing cardiovascular disease (CVD) can reduce risk factors through diet and exercise before resorting to drug treatment. The effect of a combination of resistance training with vegetable-based (soy) versus animal-based (whey) protein supplementation on CVD risk reduction has received little study. The study's purpose was to examine the effects of 12 weeks of resistance exercise training with soy versus whey protein supplementation on strength gains, body composition and serum lipid changes in overweight, hyperlipidemic men. Methods Twenty-eight overweight, male subjects (BMI 25–30) with serum cholesterol >200 mg/dl were randomly divided into 3 groups (placebo (n = 9), and soy (n = 9) or whey (n = 10) supplementation) and participated in supervised resistance training for 12 weeks. Supplements were provided in a double blind fashion. Results All 3 groups had significant gains in strength, averaging 47% in all major muscle groups and significant increases in fat free mass (2.6%), with no difference among groups. Percent body fat and waist-to-hip ratio decreased significantly in all 3 groups an average of 8% and 2%, respectively, with no difference among groups. Total serum cholesterol decreased significantly, again with no difference among groups. Conclusion Participation in a 12 week resistance exercise training program significantly increased strength and improved both body composition and serum cholesterol in overweight, hypercholesterolemic men with no added benefit from protein supplementation.
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Affiliation(s)
- Carol A Denysschen
- Department of Nutrition and Dietetics, State University at New York, Buffalo State College, Buffalo, NY, USA.
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The low-methionine content of vegan diets may make methionine restriction feasible as a life extension strategy. Med Hypotheses 2009; 72:125-8. [DOI: 10.1016/j.mehy.2008.07.044] [Citation(s) in RCA: 91] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2006] [Revised: 07/30/2008] [Accepted: 07/30/2008] [Indexed: 01/08/2023]
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Alimentary proteins, amino acids and cholesterolemia. Amino Acids 2009; 38:15-22. [DOI: 10.1007/s00726-009-0239-6] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2009] [Accepted: 01/12/2009] [Indexed: 11/26/2022]
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Hu W, Jung MJ, Heo SI, Wang MH. Antioxidant and Antidiabetic Activities of Aralia elata Seeds. ACTA ACUST UNITED AC 2008. [DOI: 10.3839/jabc.2008.020] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Santo AS, Cunningham AM, Alhassan S, Browne RW, Burton H, Leddy JJ, Grandjean PW, Horvath SM, Horvath PJ. NMR analysis of lipoprotein particle size does not increase sensitivity to the effect of soy protein on CVD risk when compared with the traditional lipid profile. Appl Physiol Nutr Metab 2008; 33:489-500. [DOI: 10.1139/h08-023] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The traditional lipid profile compared with nuclear magnetic resonance (NMR) may underestimate the risk for cardiovascular disease and may explain some of the discrepancies in results between studies analyzing the salubrious effects of soy. Our purpose was to compare the traditional lipid profile with NMR quantification of the number of lipoprotein particles, subclasses, and diameters or sizes in 30 sedentary males, between 18 and 30 years of age, consuming 1 of the following 3 supplements daily for 28 days: milk protein (Milk), isoflavone-poor soy protein (Soy–), or isoflavone-rich soy protein (Soy+). The study used a double-blind, parallel-arm design with random assignment to 1 of the 3 protein supplement groups. Fasting EDTA blood samples were collected at baseline and after 28 days of supplementation and analyzed for the number and size of very low-density lipoprotein (VLDL), low-density lipoprotein (LDL), and high-density lipoprotein (HDL) particles, respectively. Fasting serum samples were analyzed for concentrations of total cholesterol (TC), LDL cholesterol (LDL-C), total HDL cholesterol (HDL-C), HDL2-C, HDL3-C, triglycerides (TGs), free fatty acids (FFAs), and glucose. Fasting heparin blood samples were collected at baseline and after supplementation and analyzed for apolipoproteins A-I, A-II, B, C-II, C-III, and E, as well as hepatic and lipoprotein lipase concentrations. HDL3-C increased by 47.2% after Soy+ supplementation and hepatic lipase decreased 19.2% after Soy– supplementation (p < 0.05). HDL-C and apolipoproteins A-I and A-II were found to increase in all 3 groups (p < 0.05). Results support that NMR analysis of lipoprotein particle number and size are not more sensitive to the effect of soy protein on CVD risk compared with the traditional lipid profile. Furthermore, the lack of isoflavones in soy protein seems to have a deleterious effect on hepatic lipase.
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Affiliation(s)
- Antonio S. Santo
- Division of Healthful Living and Sports Studies, School of Health Sciences, Lenoir-Rhyne College, Moretz 104 – Exercise Physiology Laboratory, Hickory, NC 28603, USA
- The Center for Diabetes Self-Management Care, Frye Regional Medical Center, 420 North Center St., Hickory, NC 28601, USA
- Stanford Prevention Research Center, Stanford University School of Medicine, Hoover Pavilion, N229, 211 Quarry Rd., Stanford, CA 94305, USA
- Biotechnical and Clinical Laboratory Sciences, University at Buffalo, State University of New York, 26 Cary Hall, Buffalo, NY 14214, USA
- Department of Exercise and Nutrition Sciences, University at Buffalo, State University of New York, Kimball Tower 108, Buffalo, NY 14214, USA
| | - Ariana M. Cunningham
- Division of Healthful Living and Sports Studies, School of Health Sciences, Lenoir-Rhyne College, Moretz 104 – Exercise Physiology Laboratory, Hickory, NC 28603, USA
- The Center for Diabetes Self-Management Care, Frye Regional Medical Center, 420 North Center St., Hickory, NC 28601, USA
- Stanford Prevention Research Center, Stanford University School of Medicine, Hoover Pavilion, N229, 211 Quarry Rd., Stanford, CA 94305, USA
- Biotechnical and Clinical Laboratory Sciences, University at Buffalo, State University of New York, 26 Cary Hall, Buffalo, NY 14214, USA
- Department of Exercise and Nutrition Sciences, University at Buffalo, State University of New York, Kimball Tower 108, Buffalo, NY 14214, USA
| | - Sofiya Alhassan
- Division of Healthful Living and Sports Studies, School of Health Sciences, Lenoir-Rhyne College, Moretz 104 – Exercise Physiology Laboratory, Hickory, NC 28603, USA
- The Center for Diabetes Self-Management Care, Frye Regional Medical Center, 420 North Center St., Hickory, NC 28601, USA
- Stanford Prevention Research Center, Stanford University School of Medicine, Hoover Pavilion, N229, 211 Quarry Rd., Stanford, CA 94305, USA
- Biotechnical and Clinical Laboratory Sciences, University at Buffalo, State University of New York, 26 Cary Hall, Buffalo, NY 14214, USA
- Department of Exercise and Nutrition Sciences, University at Buffalo, State University of New York, Kimball Tower 108, Buffalo, NY 14214, USA
| | - Richard W. Browne
- Division of Healthful Living and Sports Studies, School of Health Sciences, Lenoir-Rhyne College, Moretz 104 – Exercise Physiology Laboratory, Hickory, NC 28603, USA
- The Center for Diabetes Self-Management Care, Frye Regional Medical Center, 420 North Center St., Hickory, NC 28601, USA
- Stanford Prevention Research Center, Stanford University School of Medicine, Hoover Pavilion, N229, 211 Quarry Rd., Stanford, CA 94305, USA
- Biotechnical and Clinical Laboratory Sciences, University at Buffalo, State University of New York, 26 Cary Hall, Buffalo, NY 14214, USA
- Department of Exercise and Nutrition Sciences, University at Buffalo, State University of New York, Kimball Tower 108, Buffalo, NY 14214, USA
| | - Harold Burton
- Division of Healthful Living and Sports Studies, School of Health Sciences, Lenoir-Rhyne College, Moretz 104 – Exercise Physiology Laboratory, Hickory, NC 28603, USA
- The Center for Diabetes Self-Management Care, Frye Regional Medical Center, 420 North Center St., Hickory, NC 28601, USA
- Stanford Prevention Research Center, Stanford University School of Medicine, Hoover Pavilion, N229, 211 Quarry Rd., Stanford, CA 94305, USA
- Biotechnical and Clinical Laboratory Sciences, University at Buffalo, State University of New York, 26 Cary Hall, Buffalo, NY 14214, USA
- Department of Exercise and Nutrition Sciences, University at Buffalo, State University of New York, Kimball Tower 108, Buffalo, NY 14214, USA
| | - John J. Leddy
- Division of Healthful Living and Sports Studies, School of Health Sciences, Lenoir-Rhyne College, Moretz 104 – Exercise Physiology Laboratory, Hickory, NC 28603, USA
- The Center for Diabetes Self-Management Care, Frye Regional Medical Center, 420 North Center St., Hickory, NC 28601, USA
- Stanford Prevention Research Center, Stanford University School of Medicine, Hoover Pavilion, N229, 211 Quarry Rd., Stanford, CA 94305, USA
- Biotechnical and Clinical Laboratory Sciences, University at Buffalo, State University of New York, 26 Cary Hall, Buffalo, NY 14214, USA
- Department of Exercise and Nutrition Sciences, University at Buffalo, State University of New York, Kimball Tower 108, Buffalo, NY 14214, USA
| | - Peter W. Grandjean
- Division of Healthful Living and Sports Studies, School of Health Sciences, Lenoir-Rhyne College, Moretz 104 – Exercise Physiology Laboratory, Hickory, NC 28603, USA
- The Center for Diabetes Self-Management Care, Frye Regional Medical Center, 420 North Center St., Hickory, NC 28601, USA
- Stanford Prevention Research Center, Stanford University School of Medicine, Hoover Pavilion, N229, 211 Quarry Rd., Stanford, CA 94305, USA
- Biotechnical and Clinical Laboratory Sciences, University at Buffalo, State University of New York, 26 Cary Hall, Buffalo, NY 14214, USA
- Department of Exercise and Nutrition Sciences, University at Buffalo, State University of New York, Kimball Tower 108, Buffalo, NY 14214, USA
| | - Steven M. Horvath
- Division of Healthful Living and Sports Studies, School of Health Sciences, Lenoir-Rhyne College, Moretz 104 – Exercise Physiology Laboratory, Hickory, NC 28603, USA
- The Center for Diabetes Self-Management Care, Frye Regional Medical Center, 420 North Center St., Hickory, NC 28601, USA
- Stanford Prevention Research Center, Stanford University School of Medicine, Hoover Pavilion, N229, 211 Quarry Rd., Stanford, CA 94305, USA
- Biotechnical and Clinical Laboratory Sciences, University at Buffalo, State University of New York, 26 Cary Hall, Buffalo, NY 14214, USA
- Department of Exercise and Nutrition Sciences, University at Buffalo, State University of New York, Kimball Tower 108, Buffalo, NY 14214, USA
| | - Peter J. Horvath
- Division of Healthful Living and Sports Studies, School of Health Sciences, Lenoir-Rhyne College, Moretz 104 – Exercise Physiology Laboratory, Hickory, NC 28603, USA
- The Center for Diabetes Self-Management Care, Frye Regional Medical Center, 420 North Center St., Hickory, NC 28601, USA
- Stanford Prevention Research Center, Stanford University School of Medicine, Hoover Pavilion, N229, 211 Quarry Rd., Stanford, CA 94305, USA
- Biotechnical and Clinical Laboratory Sciences, University at Buffalo, State University of New York, 26 Cary Hall, Buffalo, NY 14214, USA
- Department of Exercise and Nutrition Sciences, University at Buffalo, State University of New York, Kimball Tower 108, Buffalo, NY 14214, USA
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Dewell A, Weidner G, Sumner MD, Chi CS, Ornish D. A very-low-fat vegan diet increases intake of protective dietary factors and decreases intake of pathogenic dietary factors. ACTA ACUST UNITED AC 2008; 108:347-56. [PMID: 18237581 DOI: 10.1016/j.jada.2007.10.044] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2006] [Indexed: 11/30/2022]
Abstract
There is increasing evidence that dietary factors in plant-based diets are important in the prevention of chronic disease. This study examined protective (eg, antioxidant vitamins, carotenoids, and fiber) and pathogenic (eg, saturated fatty acids and cholesterol) dietary factors in a very-low-fat vegan diet. Ninety-three early-stage prostate cancer patients participated in a randomized controlled trial and were assigned to a very-low-fat (10% fat) vegan diet supplemented with soy protein and lifestyle changes or to usual care. Three-day food records were collected at baseline (n=42 intervention, n=43 control) and after 1 year (n=37 in each group). Analyses of changes in dietary intake of macronutrients, vitamins, minerals, carotenoids, and isoflavones from baseline to 1 year showed significantly increased intake of most protective dietary factors (eg, fiber increased from a mean of 31 to 59 g/day, lycopene increased from 8,693 to 34,464 mug/day) and significantly decreased intake of most pathogenic dietary factors (eg, saturated fatty acids decreased from 20 to 5 g/day, cholesterol decreased from 200 to 10 mg/day) in the intervention group compared to controls. These results suggest that a very-low-fat vegan diet can be useful in increasing intake of protective nutrients and phytochemicals and minimizing intake of dietary factors implicated in several chronic diseases.
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Affiliation(s)
- Antonella Dewell
- Stanford Prevention Research Center, Stanford University School of Medicine, Stanford, CA, USA
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43
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Glucagon and insulin responses after ingestion of different amounts of intact and hydrolysed proteins. Br J Nutr 2008; 100:61-9. [PMID: 18167171 DOI: 10.1017/s0007114507886314] [Citation(s) in RCA: 58] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Ingestion of dietary protein is known to induce both insulin and glucagon secretion. These responses may be affected by the dose and the form (intact or hydrolysed) in which protein is ingested. The aim of the study was to investigate the effect of different amounts of intact protein and protein hydrolysate of a vegetable (soya) and animal (whey) protein on insulin and glucagon responses and to study the effect of increasing protein loads for both intact protein and protein hydrolysate in man. The study employed a repeated-measures design with Latin-square randomisation and single-blind trials. Twelve healthy non-obese males ingested three doses (0.3, 0.4 and 0.6 g/kg body weight) of intact soya protein (SPI) and soya protein hydrolysate (SPH). Another group of twelve healthy male subjects ingested three doses (0.3, 0.4 and 0.6 g/kg body weight) of intact whey protein (WPI) and whey protein hydrolysate (WPH). Blood was sampled before (t = 0) and 15, 30, 60, 90 and 120 min after protein ingestion for insulin, glucagon and glucose determination. SPI induced a higher total area under the curve for insulin and glucagon than SPH while no difference between WPI and WPH was found. Insulin and glucagon responses increased with increasing protein load for SPI, SPH, WPI and WPH, but the effect was more pronounced for glucagon. A higher dose of protein or its hydrolysate will result in a lower insulin:glucagon ratio, an important parameter for the control of postprandial substrate metabolism. In conclusion, insulin and glucagon responses were protein and hydrolysate specific.
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Abstract
The worldwide increase in degenerative diseases is in part due to modifications in the lifestyle including the diet. Epidemiological, clinical, and experimental evidence shows that soy protein may prevent lipotoxicity in non-adipose tissues during obesity. The molecular mechanism by which soy protein prevents lipotoxicity involves a reduction in the insulin/glucagon ratio, resulting in a down-regulation of lipogenic genes mediated by the transcription factor sterol regulatory element-binding protein (SREBP)-1, and up-regulation of SREBP-2 to reduce serum cholesterol. In addition, soy protein maintains the functionality of adipose tissue-liver axis to prevent hepatic steatosis during the development of obesity.
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Affiliation(s)
- Nimbe Torres
- Departamento de Fisiología de la Nutrición, Instituto Nacional de Ciencias Médicas y Nutrición, Mexico
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45
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Hung CJ, Huang PC, Li YH, Lu SC, Ho LT, Chou HF. Taiwanese vegetarians have higher insulin sensitivity than omnivores. Br J Nutr 2007; 95:129-35. [PMID: 16441925 DOI: 10.1079/bjn20051588] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
The present study was designed to examine the effects of habitual consumption of Taiwanese vegetarian diets on hormonal secretion, and on lipid and glycaemic control. Of the ninety-eight healthy female adults recruited from Hualien, Taiwan (aged 31–45 years), forty-nine were Buddhist lactovegetarians and forty-nine were omnivores. Dietary intakes were measured, and blood levels of nutrients and hormones were analysed. Vegetarians consumed less energy, fat and protein, but more fibre than the omnivores. Compared with the omnivores, the vegetarians had, on average, lower BMI and smaller waist circumference. Except for slightly lower levels of thyroxine (T4) in vegetarians, vegetarians and omnivores both showed similar levels of triiodothyronine (T3), free T4, thyroid-stimulating hormone, T3:T4 ratio and cortisol. Compared with the omnivores, the vegetarians had significantly lower levels of fasting insulin (median: 35·3 v. 50·6pmol/l) and plasma glucose (mean: 4·7 (se 0·05) v. 4·9 (se 0·05) mmol/l). Insulin resistance, as calculated by the homeostasis model assessment method, was significantly lower in the vegetarians than in the omnivores (median: 1·10 v. 1·56), while β-cell function was not different between the two groups. BMI and diet were both independent predictors for insulin resistance, and contributed 18 and 15% of the variation in insulin resistance, respectively. In conclusion, Taiwanese vegetarians had lower glucose and insulin levels and higher insulin sensitivity than did the omnivores. Diet and lower BMI were partially responsible for the high insulin sensitivity observed in young Taiwanese vegetarians.
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Affiliation(s)
- Chien-Jung Hung
- Department of Biochemistry, College of Medicine, Tzu-Chi University, Taiwan
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46
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Abstract
The increasing global health problems of overweight and obesity are associated with coronary heart disease, hypertension, diabetes, osteoarthritis, and certain cancers, among other health concerns. Vegetarian diets are associated with reduced body weight, lower incidence of certain chronic disease, and lower medical costs compared with non-vegetarian diets. We reviewed the literature to ascertain the extent to which and by what mechanism(s) a plant-based diet may mediate body weight.
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Affiliation(s)
- Susan E Berkow
- Physician's Committee for Responsible Medicine, 5100 Wisconsin Ave., Suite 400, Washington, DC 20016, USA
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47
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Hedman CA, Frystyk J, Fridell K, Jönsson A, Flyvbjerg A, Lindström T, Arnqvist HJ. The IGF-system is not affected by a twofold change in protein intake in patients with type 1 diabetes. Growth Horm IGF Res 2005; 15:304-310. [PMID: 16054412 DOI: 10.1016/j.ghir.2005.06.013] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/04/2005] [Revised: 06/06/2005] [Accepted: 06/08/2005] [Indexed: 11/29/2022]
Abstract
OBJECTIVE In type 1 diabetes the circulating IGF-system is altered with low IGF-I and changes in levels of IGF-binding proteins (IGFBPs) which may be of importance for the development of diabetes complications. Our aim was to study if IGF-I, as supported by experimental data in animals, can be affected by dietary protein intake. DESIGN AND METHODS Twelve patients with type 1 diabetes, age 37.5+/-10.0 years (mean+/-SD), diabetes duration 20.1+/-9.3 years and HbA1c 6.3+/-0.6% were allocated to isocaloric diets with either low normal protein content (LNP), (10 E%; 0.9 g protein/kg body weight) or high normal protein content (HNP) (20 E%; 1.8 g protein/kg body weight) in an open randomised cross-over study. Each diet was taken for 10 days with a wash-out period of 11 days in between. Circulating levels of total and free IGF-I and -II, IGFBP-1, -2 and -3 and GH-binding protein (GHBP) as well as ghrelin were measured with validated in-house immunoassays. RESULTS At day 10, urinary urea excretion was 320+/-75 mmol/24h during LNP diet compared with 654+/-159 mmol/24h during HNP diet (p<0.001). There were no changes in body weight or glycaemic control between the diets. Fasting levels of total IGF-I were 121+/-33 microg/L after LNP and 117+/-28 microg/L after HNP diet (ns) and the corresponding concentrations of IGFBP-1 were 142(141) and 132(157)mug/L [median (IQR)] (ns). There were no differences in plasma concentrations of total IGF-II, free IGF-I and -II, IGFBP-3, GHBP and ghrelin, whereas a small difference was found for IGFBP-2 (302+/-97 vs. 263+/-66 microg/L; LNP vs. HNP; p<0.04). CONCLUSIONS A twofold change of the dietary protein intake does not influence the altered circulating IGF-system in type 1 diabetes. In order to affect the IGF-system other interventions must be used.
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Affiliation(s)
- Christina A Hedman
- Division of Internal Medicine, Department of Medicine and Care, Diabetes Research Centre, Faculty of Health Sciences, SE-581 83 Linköping University, Linköping, Sweden.
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48
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McCarty MF. Proposal for a dietary “phytochemical index”. Med Hypotheses 2004; 63:813-7. [PMID: 15488652 DOI: 10.1016/j.mehy.2002.11.004] [Citation(s) in RCA: 57] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2002] [Accepted: 11/11/2002] [Indexed: 12/19/2022]
Abstract
There is ample reason to believe that diets rich in phytochemicals provide protection from vascular diseases and many cancers; direct antioxidant activity as well as modulation of enzyme expression or hormone activity contribute to this effect. Phytochemicals derived from diverse foods presumably can interact additively and (possibly) synergistically; thus, the total dietary load of phytochemicals may have important implications for health. As a means of very roughly quantifying this load, a "phytochemical index" (PI) is proposed, defined as the percent of dietary calories derived from foods rich in phytochemicals. Calories derived from fruits, vegetables (excluding potatoes), legumes, whole grains, nuts, seeds, fruit/vegetable juices, soy products, wine, beer, and cider - and foods compounded therefrom - would be counted in this index. Partial credit could be given for antioxidant-rich extra virgin olive oil. Other added oils, refined sugars, refined grains, potato products, hard liquors, and animal products - regrettably, the chief sources of calories in typical Western diets - would be excluded. Although the PI would provide only a very rough approximation of the quantity or quality of phytochemical nutrition, it nonetheless could aid epidemiologists in exploring the health consequences of diets high in phytochemical-rich plant foods, and could also help clinical nutritionists in their efforts to improve the phytochemical nutrition of their clients.
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Affiliation(s)
- Mark F McCarty
- Pantox Laboratories, 4622 Santa Fe St., San Diego, CA 92109, USA.
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Roy S, Rink C, Khanna S, Phillips C, Bagchi D, Bagchi M, Sen CK. Body weight and abdominal fat gene expression profile in response to a novel hydroxycitric acid-based dietary supplement. Gene Expr 2004; 11:251-62. [PMID: 15200237 PMCID: PMC5991152 DOI: 10.3727/000000003783992289] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/24/2004] [Indexed: 02/03/2023]
Abstract
Obesity is a global public health problem, with about 315 million people worldwide estimated to fall into the WHO-defined obesity categories. Traditional herbal medicines may have some potential in managing obesity. Botanical dietary supplements often contain complex mixtures of phytochemicals that have additive or synergistic interactions. The dried fruit rind of Garcinia cambogia, also known as Malabar tamarind, is a unique source of (-)-hydroxycitric acid (HCA), which exhibits a distinct sour taste and has been safely used for centuries in Southeastern Asia to make meals more filling. Recently it has been demonstrated that HCA-SX or Super Citrimax, a novel derivative of HCA, is safe when taken orally and that HCA-SX is bioavailable in the human plasma as studied by GC-MS. Although HCA-SX has been observed to be conditionally effective in weight management in experimental animals as well as in humans, its mechanism of action remains to be understood. We sought to determine the effects of low-dose oral HCA-SX on the body weight and abdominal fat gene expression profile of Sprague-Dawley rats. We observed that at doses relevant for human consumption dietary HCA-SX significantly contained body weight growth. This response was associated with lowered abdominal fat leptin expression while plasma leptin levels remained unaffected. Repeated high-density microarray analysis of 9960 genes and ESTs present in the fat tissue identified a small set (approximately 1% of all genes screened) of specific genes sensitive to dietary HCA-SX. Other genes, including vital genes transcribing for mitochondrial/nuclear proteins and which are necessary for fundamental support of the tissue, were not affected by HCA-SX. Under the current experimental conditions, HCA-SX proved to be effective in restricting body weight gain in adult rats. Functional characterization of HCA-SX-sensitive genes revealed that upregulation of genes encoding serotonin receptors represent a distinct effect of dietary HCA-SX supplementation.
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Affiliation(s)
- Sashwati Roy
- *Laboratory of Molecular Medicine, Department of Surgery, The Ohio State University Medical Center, Columbus, OH 43210
| | - Cameron Rink
- *Laboratory of Molecular Medicine, Department of Surgery, The Ohio State University Medical Center, Columbus, OH 43210
| | - Savita Khanna
- *Laboratory of Molecular Medicine, Department of Surgery, The Ohio State University Medical Center, Columbus, OH 43210
| | - Christina Phillips
- *Laboratory of Molecular Medicine, Department of Surgery, The Ohio State University Medical Center, Columbus, OH 43210
| | - Debasis Bagchi
- †School of Pharmacy and Health Professions, Creighton University Medical Center, Omaha, NE 68178
| | - Manashi Bagchi
- †School of Pharmacy and Health Professions, Creighton University Medical Center, Omaha, NE 68178
| | - Chandan K. Sen
- *Laboratory of Molecular Medicine, Department of Surgery, The Ohio State University Medical Center, Columbus, OH 43210
- Address correspondence to Dr. Chandan K. Sen, 512 Davis Heart & Lung Research Institute, The Ohio State University Medical Center, 473 W. 12th Avenue, Columbus, OH 43210. Tel: (614) 247-7658; Fax: (614) 247-7818; E-mail:
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50
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McCarty MF. Hyperinsulinemia may boost both hematocrit and iron absorption by up-regulating activity of hypoxia-inducible factor-1α. Med Hypotheses 2003; 61:567-73. [PMID: 14592787 DOI: 10.1016/s0306-9877(03)00231-7] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
There is growing evidence that increases in both hematocrit and body iron stores are components of the insulin resistance syndrome. The ability of insulin and of IGF-I - whose effective activity is increased in the context of insulin resistance - to boost activity of the transcription factor hypoxia-inducible factor-1alpha (HIF-1alpha), may be at least partially responsible for this association. HIF-1alpha, which functions physiologically as a detector of both hypoxia and iron-deficiency, promotes synthesis of erythropoietin, and may also mediate the up-regulatory impact of hypoxia on intestinal iron absorption. Insulin/IGF-I may also influence erythropoiesis more directly, as they are growth factors for developing reticulocytes. Conversely, the activation of HIF-1alpha associated with iron deficiency may be responsible for the increased glucose tolerance noted in iron-deficient animals; HIF-1alpha promotes efficient glucose uptake and glycolysis - a sensible adaptation to hypoxia - by inducing increased synthesis of glucose transporters and glycolytic enzymes. Recent reports that phlebotomy can increase the efficiency of muscle glucose uptake in lean healthy omnivores are intriguing and require further confirmation. Whether increased iron stores contribute to the elevated vascular risk associated with insulin resistance is doubtful, inasmuch as most prospective studies fail to correlate serum ferritin or transferrin saturation with subsequent vascular events. However, current data are reasonably consistent with the possibility that moderately elevated iron stores are associated with increased overall risk for cancer - and for colorectal cancer in particular; free iron may play a catalytic role in 'spontaneous' mutagenesis. Thus, iron excess may mediate at least some of the increased cancer risk associated with insulin resistance and heme-rich diets. People who are insulin resistant can minimize any health risk associated with iron overload by avoiding heme-rich flesh foods and donating blood regularly.
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Affiliation(s)
- M F McCarty
- Pantox Laboratories, San Diego, California 92109, USA.
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