1
|
Melaku YA, Zhao L, Adams R, Eckert DJ. Plant-based and vegetarian diets are associated with reduced obstructive sleep apnoea risk. ERJ Open Res 2024; 10:00739-2023. [PMID: 38444660 PMCID: PMC10910314 DOI: 10.1183/23120541.00739-2023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2023] [Accepted: 01/03/2024] [Indexed: 03/07/2024] Open
Abstract
Introduction Obstructive sleep apnoea (OSA) and obesity commonly coexist. Weight loss and exercise are recommended management options for OSA. However, most of the current evidence on diet and OSA is focused on calorie restriction rather than diet quality. The aim of the present study was to determine the association of plant-based dietary indices (PDI) with OSA risk. Methods Cross-sectional data from 14 210 participants of the National Health and Nutrition Examination Survey who provided dietary information using the 24-hour recall method were used. PDI - including healthy (hPDI), unhealthy (uPDI) and pro-vegetarian diet index (PVDI) - were determined. OSA risk was determined using the STOP-BANG questionnaire. Logistic regression was used to determine the relationship between dietary indices and OSA risk. Results Higher adherence to PDI (odds ratio (OR)Q5 versus Q1=0.81; 95% confidence interval (CI): 0.66-1.00), hPDI (OR=0.83; 95% CI: 0.69-1.01) and PVDI (OR=0.84; 95% CI: 0.68-1.05) was inversely associated with OSA risk, whereas higher consumption of an unhealthy plant-based diet (OR=1.22; 95% CI: 1.00-1.49) was positively associated with OSA. Sex differences in estimates were observed for PDI in males (OR=0.71; 95% CI: 0.56-0.90) versus females (OR=0.93; 95% CI: 0.68-1.28), hPDI in males (OR=0.90; 95% CI: 0.68-1.18) versus females (OR=0.77; 95% CI: 0.54-1.09) and uPDI in males (OR=1.13; 95% CI: 0.89-1.44) versus females (OR=1.42; 95% CI: 1.03-1.97) but not for PVDI. Conclusions Higher adherence to a healthy plant-based diet is associated with reduced OSA risk, while an unhealthy plant-based diet has a positive association. The magnitude of these associations differs by sex. Further longitudinal studies are warranted.
Collapse
Affiliation(s)
- Yohannes Adama Melaku
- FHMRI Sleep Health (Adelaide Institute for Sleep Health), College of Medicine and Public Health, Flinders University, Adelaide, Australia
- Cancer Epidemiology Division, Cancer Council Victoria, Melbourne, Australia
| | - Lijun Zhao
- Adelaide Medical School, Faculty of Health and Medical Science, The University of Adelaide, Adelaide, Australia
| | - Robert Adams
- FHMRI Sleep Health (Adelaide Institute for Sleep Health), College of Medicine and Public Health, Flinders University, Adelaide, Australia
| | - Danny J. Eckert
- FHMRI Sleep Health (Adelaide Institute for Sleep Health), College of Medicine and Public Health, Flinders University, Adelaide, Australia
| |
Collapse
|
2
|
Li K, Chen Y, Xie J, Cai W, Pang C, Cui C, Huan Y, Deng B. How vitamins act as novel agents for ameliorating diabetic peripheral neuropathy: A comprehensive overview. Ageing Res Rev 2023; 91:102064. [PMID: 37689144 DOI: 10.1016/j.arr.2023.102064] [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: 03/19/2023] [Revised: 08/10/2023] [Accepted: 09/01/2023] [Indexed: 09/11/2023]
Abstract
Diabetic peripheral neuropathy (DPN) is a pervasive and incapacitating sequela of diabetes, affecting a significant proportion of those diagnosed with the disease, yet an effective treatment remains elusive. Vitamins have been extensively studied, emerging as a promising target for diagnosing and treating various systemic diseases, but their role in DPN is not known. This review collates and synthesizes knowledge regarding the interplay between vitamins and DPN, drawing on bibliographies from prior studies and relevant articles, and stratifying the therapeutic strategies from prophylactic to interventional. In addition, the clinical evidence supporting the use of vitamins to ameliorate DPN is also evaluated, underscoring the potential of vitamins as putative therapeutic agents. We anticipate that this review will offer novel insights for developing and applying vitamin-based therapies for DPN.
Collapse
Affiliation(s)
- Kezheng Li
- Department of Neurology, First Affiliated Hospital of Wenzhou Medical University, Wenzhou, PR China; First School of Clinical Medicine, Wenzhou Medical University, Wenzhou, PR China
| | - Yinuo Chen
- Department of Neurology, First Affiliated Hospital of Wenzhou Medical University, Wenzhou, PR China; First School of Clinical Medicine, Wenzhou Medical University, Wenzhou, PR China
| | - Jiali Xie
- Department of Neurology, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, PR China
| | - Weiwei Cai
- Department of Rheumatology and Immunology, Beijing Hospital, Beijing, PR China
| | - Chunyang Pang
- Department of Neurology, First Affiliated Hospital of Wenzhou Medical University, Wenzhou, PR China
| | - Can Cui
- Department of Clinical Sciences Malmö, Lund University, Skåne, Sweden
| | - Yu Huan
- Department of Pediatrics, Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, PR China
| | - Binbin Deng
- Department of Neurology, First Affiliated Hospital of Wenzhou Medical University, Wenzhou, PR China; First School of Clinical Medicine, Wenzhou Medical University, Wenzhou, PR China.
| |
Collapse
|
3
|
Rizzo G, Storz MA, Calapai G. The Role of Hemp ( Cannabis sativa L.) as a Functional Food in Vegetarian Nutrition. Foods 2023; 12:3505. [PMID: 37761214 PMCID: PMC10528039 DOI: 10.3390/foods12183505] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2023] [Revised: 09/15/2023] [Accepted: 09/19/2023] [Indexed: 09/29/2023] Open
Abstract
Recently, there has been a renewed interest in Cannabis sativa and its uses. The recreational use of inflorescences as a source of THC has led to the legal restriction of C. sativa cultivation to limit the detrimental effects of psychotropic substance abuse on health. However, this has also limited the cultivation of textile/industrial varieties with a low content of THC used for textile and nutritional purposes. While previously the bans had significantly penalized the cultivation of C. sativa, today many countries discriminate between recreational use (marijuana) and industrial and food use (hemp). The stalks of industrial hemp (low in psychotropic substances) have been used extensively for textile purposes while the seeds are nutritionally versatile. From hemp seeds, it is possible to obtain flours applicable in the bakery sector, oils rich in essential fatty acids, proteins with a high biological value and derivatives for fortification, supplementation and nutraceutical purposes. Hemp seed properties seem relevant for vegetarian diets, due to their high nutritional value and underestimated employment in the food sector. Hemp seed and their derivatives are a valuable source of protein, essential fatty acids and minerals that could provide additional benefit to vegetarian nutrition. This document aims to explore the information available in the literature about hemp seeds from a nutritional point of view, highlighting possible beneficial effects for humans with particular attention to vegetarian nutrition as a supplemental option for a well-planned diet.
Collapse
Affiliation(s)
- Gianluca Rizzo
- Independent Researcher, Via Venezuela 66, 98121 Messina, Italy
| | - Maximilian Andreas Storz
- Department of Internal Medicine II, Centre for Complementary Medicine, Medical Center—University of Freiburg, Faculty of Medicine, University of Freiburg, 79106 Freiburg, Germany;
| | - Gioacchino Calapai
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, 98166 Messina, Italy;
| |
Collapse
|
4
|
Koch CA, Kjeldsen EW, Frikke-Schmidt R. Vegetarian or vegan diets and blood lipids: a meta-analysis of randomized trials. Eur Heart J 2023:7177660. [PMID: 37226630 PMCID: PMC10361023 DOI: 10.1093/eurheartj/ehad211] [Citation(s) in RCA: 16] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/09/2022] [Revised: 02/23/2023] [Accepted: 03/24/2023] [Indexed: 05/26/2023] Open
Abstract
AIMS Due to growing environmental focus, plant-based diets are increasing steadily in popularity. Uncovering the effect on well-established risk factors for cardiovascular diseases, the leading cause of death worldwide, is thus highly relevant. Therefore, a systematic review and meta-analysis were conducted to estimate the effect of vegetarian and vegan diets on blood levels of total cholesterol, low-density lipoprotein cholesterol, triglycerides, and apolipoprotein B. METHODS AND RESULTS Studies published between 1980 and October 2022 were searched for using PubMed, Embase, and references of previous reviews. Included studies were randomized controlled trials that quantified the effect of vegetarian or vegan diets vs. an omnivorous diet on blood lipids and lipoprotein levels in adults over 18 years. Estimates were calculated using a random-effects model. Thirty trials were included in the study. Compared with the omnivorous group, the plant-based diets reduced total cholesterol, low-density lipoprotein cholesterol, and apolipoprotein B levels with mean differences of -0.34 mmol/L (95% confidence interval, -0.44, -0.23; P = 1 × 10-9), -0.30 mmol/L (-0.40, -0.19; P = 4 × 10-8), and -12.92 mg/dL (-22.63, -3.20; P = 0.01), respectively. The effect sizes were similar across age, continent, duration of study, health status, intervention diet, intervention program, and study design. No significant difference was observed for triglyceride levels. CONCLUSION Vegetarian and vegan diets were associated with reduced concentrations of total cholesterol, low-density lipoprotein cholesterol, and apolipoprotein B-effects that were consistent across various study and participant characteristics. Plant-based diets have the potential to lessen the atherosclerotic burden from atherogenic lipoproteins and thereby reduce the risk of cardiovascular disease.
Collapse
Affiliation(s)
- Caroline A Koch
- Department of Clinical Biochemistry, Copenhagen University Hospital-Rigshospitalet, Blegdamsvej 9, DK-2100 Copenhagen, Denmark
| | - Emilie W Kjeldsen
- Department of Clinical Biochemistry, Copenhagen University Hospital-Rigshospitalet, Blegdamsvej 9, DK-2100 Copenhagen, Denmark
- Department of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, 2200 Copenhagen, Denmark
| | - Ruth Frikke-Schmidt
- Department of Clinical Biochemistry, Copenhagen University Hospital-Rigshospitalet, Blegdamsvej 9, DK-2100 Copenhagen, Denmark
- Department of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, 2200 Copenhagen, Denmark
| |
Collapse
|
5
|
Long Y, Ye H, Yang J, Tao X, Xie H, Zhang J, Zhong Y, Wang M. Effects of a vegetarian diet combined with aerobic exercise on glycemic control, insulin resistance, and body composition: a systematic review and meta-analysis. Eat Weight Disord 2023; 28:9. [PMID: 36790517 PMCID: PMC9931794 DOI: 10.1007/s40519-023-01536-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/27/2022] [Accepted: 12/26/2022] [Indexed: 02/16/2023] Open
Abstract
BACKGROUND Vegetarian diets and aerobic exercise are increasingly accepted as a common way to improve lifestyle. Several studies have shown that vegetarian diets combined with aerobic exercise interventions have a significant effect on preventing and reducing the risk of metabolic diseases. METHODS A search of the PubMed, EBSCO, Embase, CENTRAL, and Web of Science databases was conducted for comparative studies of pre- and post-vegetarian diet adoption combined with aerobic exercise interventions on glycemic control and body composition. Qualitative reviews and meta-analyses of fixed and random effects were conducted to pool available data. The results were validated by sensitivity analysis. RESULTS A total of 27 studies were selected for meta-analysis. Combining the studies included in the meta-analysis showed a mean difference for homeostasis model assessment of insulin resistance of - 0.75 (- 1.08 to - 0.42), fasting plasma glucose of - 0.27(- 0.30 to - 0.23), waist circumference of - 1.10 (- 5.06 to 2.86) and body mass index of - 0.70 (- 1.38 to - 0.01). CONCLUSION In summary, our findings suggest that participants who adopted a vegetarian diet combined with aerobic exercise intervention had significantly lower fasting plasma glucose and insulin levels and improved body composition compared to preintervention participants. LEVEL OF EVIDENCE Level I, systematic review and meta-analysis.
Collapse
Affiliation(s)
- Yi Long
- The First Affiliated Hospital of Gannan Medical University, Ganzhou, Jiangxi Province, China.,Gannan Medical University, Ganzhou, Jiangxi Province, China
| | - Hua Ye
- The First Affiliated Hospital of Gannan Medical University, Ganzhou, Jiangxi Province, China.,Gannan Medical University, Ganzhou, Jiangxi Province, China
| | - Jiaming Yang
- The First Affiliated Hospital of Gannan Medical University, Ganzhou, Jiangxi Province, China.,Gannan Medical University, Ganzhou, Jiangxi Province, China
| | - Xi Tao
- The First Affiliated Hospital of Gannan Medical University, Ganzhou, Jiangxi Province, China
| | - Huiyong Xie
- The First Affiliated Hospital of Gannan Medical University, Ganzhou, Jiangxi Province, China.,Gannan Medical University, Ganzhou, Jiangxi Province, China
| | - Jiahong Zhang
- The First Affiliated Hospital of Gannan Medical University, Ganzhou, Jiangxi Province, China
| | - Yanbiao Zhong
- The First Affiliated Hospital of Gannan Medical University, Ganzhou, Jiangxi Province, China.,Ganzhou Intelligent Rehabilitation Technology Innovation Center, Ganzhou, Jiangxi Province, China
| | - Maoyuan Wang
- The First Affiliated Hospital of Gannan Medical University, Ganzhou, Jiangxi Province, China. .,Ganzhou Key Laboratory of Rehabilitation Medicine, Ganzhou, Jiangxi Province, China.
| |
Collapse
|
6
|
Rizzo G, Baroni L, Lombardo M. Promising Sources of Plant-Derived Polyunsaturated Fatty Acids: A Narrative Review. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2023; 20:ijerph20031683. [PMID: 36767052 PMCID: PMC9914036 DOI: 10.3390/ijerph20031683] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/27/2022] [Revised: 01/11/2023] [Accepted: 01/15/2023] [Indexed: 06/01/2023]
Abstract
(1) Background: Polyunsaturated fatty acids (PUFAs) are known for their ability to protect against numerous metabolic disorders. The consumption of oily fish is the main source of PUFAs in human nutrition and is commonly used for supplement production. However, seafood is an overexploited source that cannot be guaranteed to cover the global demands. Furthermore, it is not consumed by everyone for ecological, economic, ethical, geographical and taste reasons. The growing demand for natural dietary sources of PUFAs suggests that current nutritional sources are insufficient to meet global needs, and less and less will be. Therefore, it is crucial to find sustainable sources that are acceptable to all, meeting the world population's needs. (2) Scope: This review aims to evaluate the recent evidence about alternative plant sources of essential fatty acids, focusing on long-chain omega-3 (n-3) PUFAs. (3) Method: A structured search was performed on the PubMed search engine to select available human data from interventional studies using omega-3 fatty acids of non-animal origin. (4) Results: Several promising sources have emerged from the literature, such as algae, microorganisms, plants rich in stearidonic acid and GM plants. However, the costs, acceptance and adequate formulation deserve further investigation.
Collapse
Affiliation(s)
- Gianluca Rizzo
- Independent Researcher, Via Venezuela 66, 98121 Messina, Italy
| | - Luciana Baroni
- Scientific Society for Vegetarian Nutrition, 30171 Venice, Italy
| | - Mauro Lombardo
- Department of Human Sciences and Promotion of the Quality of Life, San Raffaele Open University, 00166 Rome, Italy
| |
Collapse
|
7
|
Niu Y, Cao H, Zhou H, Cao J, Wang Z. Effects of a vegetarian diet combined with exercise on lipid profiles and blood pressure: A systematic review and meta-analysis. Crit Rev Food Sci Nutr 2022; 64:2289-2303. [PMID: 36106474 DOI: 10.1080/10408398.2022.2122923] [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] [Indexed: 11/03/2022]
Abstract
We aimed to evaluate the combined effects of a vegetarian diet (VD) and exercise on total cholesterol (TC), low-density lipoprotein cholesterol (LDL-C), high-density lipoprotein cholesterol (HDL-C), triglyceride (TG), systolic blood pressure (SBP), and diastolic blood pressure (DBP) parameters. A literature search was conducted in electronic databases from build to February 27, 2022. Data were synthesized using random effects model and were expressed as standardized mean difference (SMD)/weighted mean difference (WMD) and 95% confidence interval (CI). Overall, 27 trials with 9,251 participants were included. Pooled results indicated that the combination of a VD and exercise significantly reduced TC (SMD: -0.524; 95% CI: -0.602, -0.446; p < 0.001), LDL-C (SMD: -0.379; 95% CI: -0.471, -0.287; p < 0.001), HDL-C (SMD: -0.213; 95% CI: -0.299, -0.126; p < 0.001), TG (SMD: -0.090; 95% CI: -0.160, -0.020; p = 0.012), SBP (WMD: -7.664 mm Hg; 95% CI: -9.219, -6.109 mm Hg; p < 0.001), and DBP (WMD: -4.347 mm Hg; 95% CI: -5.099, -3.596 mm Hg; p < 0.001). These parameters were reduced more following a low-fat VD, or a mixed high-frequency exercise, especially under strict supervision. Surprisingly, the decreased HDL-C due to VD was observed to recover with the prolongation of exercise.
Collapse
Affiliation(s)
- Yanlong Niu
- School of Sports and Health, Guangzhou Sport University, Guangzhou, China
| | - Hui Cao
- Department of Physical Education, North China Electric Power University, Beijing, China
| | - Haitao Zhou
- Department of Physical Education, Beijing Union University, Beijing, China
| | - Jianmin Cao
- School of Sports Science, Beijing Sport University, Beijing, China
| | - Zhen Wang
- School of Sports and Health, Guangzhou Sport University, Guangzhou, China
| |
Collapse
|
8
|
Elliott LJ, Keown-Stoneman CDG, Birken CS, Jenkins DJA, Borkhoff CM, Maguire JL. Vegetarian Diet, Growth, and Nutrition in Early Childhood: A Longitudinal Cohort Study. Pediatrics 2022; 149:186964. [PMID: 35499383 DOI: 10.1542/peds.2021-052598] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 03/07/2022] [Indexed: 11/24/2022] Open
Abstract
OBJECTIVES The primary objective of this study was to examine the relationships between vegetarian diet and growth, micronutrient stores, and serum lipids among healthy children. Secondary objectives included exploring whether cow's milk consumption or age modified these relationships. METHODS A longitudinal cohort study of children aged 6 months to 8 years who participated in the TARGet Kids! cohort study. Linear mixed-effect modeling was used to evaluate the relationships between vegetarian diet and BMI z-score (zBMI), height-for-age z-score, serum ferritin, 25-hydroxyvitamin D, and serum lipids. Generalized estimating equation modeling was used to explore weight status categories. Possible effect modification by age and cow's milk consumption was examined. RESULTS A total of 8907 children, including 248 vegetarian at baseline, participated. Mean age at baseline was 2.2 years (SD 1.5). There was no evidence of an association between vegetarian diet and zBMI, height-for-age z-score, serum ferritin, 25-hydroxyvitamin D, or serum lipids. Children with vegetarian diet had higher odds of underweight (zBMI <-2) (odds ratio 1.87, 95% confidence interval 1.19 to 2.96; P = .007) but no association with overweight or obesity was found. Cow's milk consumption was associated with higher nonhigh-density lipoprotein cholesterol (P = .03), total cholesterol (P = .04), and low-density lipoprotein cholesterol (P = .02) among children with vegetarian diet. However, children with and without vegetarian diet who consumed the recommended 2 cups of cow's milk per day had similar serum lipids. CONCLUSIONS Evidence of clinically meaningful differences in growth or biochemical measures of nutrition for children with vegetarian diet was not found. However, vegetarian diet was associated with higher odds of underweight.
Collapse
Affiliation(s)
- Laura J Elliott
- Departments of Nutritional Sciences.,Department of Paediatrics
| | | | - Catherine S Birken
- Pediatrics, Faculty of Medicine.,Institute of Health Policy Management and Evaluation.,Joannah & Brian Lawson Centre for Child Nutrition, Department of Nutritional Sciences, University of Toronto, Toronto, Ontario, Canada.,Division of Paediatric Medicine and the Paediatric Outcomes Research Team, Hospital for Sick Children, Toronto, Ontario, Canada.,Child Health Evaluative Sciences, SickKids Research Institute, Toronto, Ontario, Canada
| | - David J A Jenkins
- Departments of Nutritional Sciences.,Clinical Nutrition and Risk Factor Modification Centre.,Division of Endocrinology and Metabolism.,Li Ka Shing Knowledge Institute.,Toronto 3D Knowledge Synthesis and Clinical Trials Unit, St. Michael's Hospital, Toronto, Ontario, Canada
| | - Cornelia M Borkhoff
- Institute of Health Policy Management and Evaluation.,Division of Paediatric Medicine and the Paediatric Outcomes Research Team, Hospital for Sick Children, Toronto, Ontario, Canada.,Child Health Evaluative Sciences, SickKids Research Institute, Toronto, Ontario, Canada.,Women's College Research Institute, Women's College Hospital, Toronto, Ontario, Canada
| | - Jonathon L Maguire
- Departments of Nutritional Sciences.,Pediatrics, Faculty of Medicine.,Institute of Health Policy Management and Evaluation.,Joannah & Brian Lawson Centre for Child Nutrition, Department of Nutritional Sciences, University of Toronto, Toronto, Ontario, Canada.,Department of Paediatrics.,Li Ka Shing Knowledge Institute
| | | |
Collapse
|
9
|
Mechanistic Link between Vitamin B12 and Alzheimer’s Disease. Biomolecules 2022; 12:biom12010129. [PMID: 35053277 PMCID: PMC8774227 DOI: 10.3390/biom12010129] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Revised: 01/10/2022] [Accepted: 01/11/2022] [Indexed: 01/27/2023] Open
Abstract
Alzheimer’s disease (AD) is the most common form of dementia in the elderly population, affecting over 55 million people worldwide. Histopathological hallmarks of this multifactorial disease are an increased plaque burden and tangles in the brains of affected individuals. Several lines of evidence indicate that B12 hypovitaminosis is linked to AD. In this review, the biochemical pathways involved in AD that are affected by vitamin B12, focusing on APP processing, Aβ fibrillization, Aβ-induced oxidative damage as well as tau hyperphosphorylation and tau aggregation, are summarized. Besides the mechanistic link, an overview of clinical studies utilizing vitamin B supplementation are given, and a potential link between diseases and medication resulting in a reduced vitamin B12 level and AD are discussed. Besides the disease-mediated B12 hypovitaminosis, the reduction in vitamin B12 levels caused by an increasing change in dietary preferences has been gaining in relevance. In particular, vegetarian and vegan diets are associated with vitamin B12 deficiency, and therefore might have potential implications for AD. In conclusion, our review emphasizes the important role of vitamin B12 in AD, which is particularly important, as even in industrialized countries a large proportion of the population might not be sufficiently supplied with vitamin B12.
Collapse
|
10
|
Craddock JC, Genoni A, Strutt EF, Goldman DM. Limitations with the Digestible Indispensable Amino Acid Score (DIAAS) with Special Attention to Plant-Based Diets: a Review. Curr Nutr Rep 2021; 10:93-98. [PMID: 33409931 DOI: 10.1007/s13668-020-00348-8] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/20/2020] [Indexed: 12/15/2022]
Abstract
PURPOSE OF REVIEW This review describes several limitations of the Digestible Indispensable Amino Acid Score (DIAAS) with a focus on its application to plant-based dietary patterns. RECENT FINDINGS Evaluating protein quality in terms of digestibility is paramount to support and optimize the health and well-being of human populations in situations where food insecurity and protein energy malnutrition are widespread. The Food and Agriculture Organization (FAO) of the United Nations has endorsed the DIAAS to replace the previously recommended Protein Digestibility Corrected Amino Acid Score (PDCAAS) for protein quality assessment. While multiple strengths characterize the DIAAS, substantial limitations remain, many of which are accentuated in the context of a plant-based dietary pattern. Some of these limitations include a failure to translate differences in nitrogen-to-protein conversion factors between plant- and animal-based foods, limited representation of commonly consumed plant-based foods within the scoring framework, inadequate recognition of the increased digestibility of commonly consumed heat-treated and processed plant-based foods, its formulation centered on fast-growing animal models rather than humans, and a focus on individual isolated foods vs the food matrix. The DIAAS is also increasingly being used out of context where its application could produce erroneous results such as exercise settings. When investigating protein quality, particularly in a plant-based dietary context, the DIAAS should ideally be avoided.
Collapse
Affiliation(s)
- Joel C Craddock
- Sydney School of Education and Social Work, The University of Sydney, Sydney, NSW, 2006, Australia.
| | - Angela Genoni
- School of Medical and Health Sciences, Edith Cowan University, Perth, WA, 6027, Australia
| | | | | |
Collapse
|
11
|
Effects of Vegetarian Diets on Blood Pressure Lowering: A Systematic Review with Meta-Analysis and Trial Sequential Analysis. Nutrients 2020; 12:nu12061604. [PMID: 32486102 PMCID: PMC7352826 DOI: 10.3390/nu12061604] [Citation(s) in RCA: 50] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2020] [Revised: 03/26/2020] [Accepted: 03/27/2020] [Indexed: 12/27/2022] Open
Abstract
The beneficial effects of a vegetarian diet on blood pressure (BP) control have been reported in previous systematic reviews; however, so far, their relative effectiveness is not well established. Here, we performed a systematic review together with trial sequential analysis to determine the effect of a vegetarian diet on the reduction of blood pressure. We searched the randomized controlled trial (RCT) through Medline, PubMed and Cochrane Central Register. Fifteen eligible RCTs with 856 subjects were entered into the analysis. The pooled results demonstrated that vegetarian diet consumption significantly lowered the systolic blood pressure (weighted mean difference (WMD), −2.66 mmHg (95% confidence interval (CI) = −3.76, −1.55, p < 0.001) and diastolic BP was WMD, −1.69 95% CI = −2.97, −0.41, p < 0.001) as compared to an omnivorous diet. In subgroup analysis, a vegan diet demonstrated a greater reduction in systolic BP (WMD, −3.12 mmHg; 95% CI = −4.54, −1.70, p < 0.001) as compared with a lacto-ovo-vegetarian diet (WMD, −1.75 mmHg, 95% CI −5.38, 1.88, p = 0.05). The vegan diet has showed a similar trend in terms of diastolic blood pressure reduction (WMD, −1.92 mmHg (95% CI = −3.18, −0.66, p < 0.001) but those with a lacto-ovo-vegetarian diet showed no changes in diastolic BP reduction (WMD, 0.00, 95% CI = 0.00, 0.00), p = 0.432). In conclusion, vegetarian diets are associated with significant reductions in BP compared with omnivorous diets, suggesting that they may play a key role in the primary prevention and overall management of hypertension.
Collapse
|
12
|
Padrón P, Paz S, Rubio C, Gutiérrez ÁJ, González-Weller D, Hardisson A. Trace Element Levels in Vegetable Sausages and Burgers Determined by ICP-OES. Biol Trace Elem Res 2020; 194:616-626. [PMID: 31227987 DOI: 10.1007/s12011-019-01778-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/28/2019] [Accepted: 06/10/2019] [Indexed: 12/19/2022]
Abstract
The consumption of vegetable sausages or hamburgers is growing. The consumption of this type of product has increased exponentially in recent years for two main reasons: the rejection of meat consumption and the search for healthier foods. Vegetable sausages are relatively new products on the market and, as with other foods, they may contain trace elements, both essential and toxic. Thus, the objective of this work is the determination of the content of trace elements (B, Ba, Co, Cr, Cu, Fe, Li, Mn, Mo, Ni, Sr, V, Zn, Al, Cd, Pb) in 67 samples of vegetable sausages and burgers (27 samples of vegetable sausages and 39 samples of vegetable burgers) by means of ICP-OES (inductively coupled plasma optical emission spectrometry). The highest trace element levels were found in the sausage's samples, which remarkably are the Fe (14.1 mg/kg wet weight), Al (5.10 mg/kg ww), and Pb (0.05 mg/kg ww) content. Meanwhile, the levels of Zn (8.35 mg/kg ww), Mn (5.04 mg/kg ww), and Sr (2.77 mg/kg ww) were higher in burger's samples. The dietary exposure reveals that the consumption of 100 g/day of these products offers an important intake of Fe, Mn, and Cu. About the toxic trace elements, the consumption of the vegetable sausages (100 g/day) represents an intake of 14.6% of the TDI (tolerable daily intake) of Pb and sets in 0.5 μg/kg body weight/day. The consumption of 100 g/day of vegetable sausages and burgers does not pose a health risk. However, a higher consumption can carry a risk; for that reason, it is necessary to set a maximum level of certain elements in this kind of products.
Collapse
Affiliation(s)
- Pablo Padrón
- Department of Toxicology, Universidad de La Laguna, 38071, La Laguna, Tenerife, Canary Islands, Spain
| | - Soraya Paz
- Department of Toxicology, Universidad de La Laguna, 38071, La Laguna, Tenerife, Canary Islands, Spain
| | - Carmen Rubio
- Department of Toxicology, Universidad de La Laguna, 38071, La Laguna, Tenerife, Canary Islands, Spain
| | - Ángel J Gutiérrez
- Department of Toxicology, Universidad de La Laguna, 38071, La Laguna, Tenerife, Canary Islands, Spain.
| | - Dailos González-Weller
- Health Inspection and Laboratory Service, Canary Health Service, 38006, Santa Cruz de Tenerife, S/C de Tenerife, Canary Islands, Spain
| | - Arturo Hardisson
- Department of Toxicology, Universidad de La Laguna, 38071, La Laguna, Tenerife, Canary Islands, Spain
| |
Collapse
|
13
|
Rychter AM, Ratajczak AE, Zawada A, Dobrowolska A, Krela-Kaźmierczak I. Non-Systematic Review of Diet and Nutritional Risk Factors of Cardiovascular Disease in Obesity. Nutrients 2020; 12:E814. [PMID: 32204478 PMCID: PMC7146494 DOI: 10.3390/nu12030814] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2020] [Revised: 03/12/2020] [Accepted: 03/16/2020] [Indexed: 12/15/2022] Open
Abstract
Although cardiovascular disease and its risk factors have been widely studied and new methods of diagnosis and treatment have been developed and implemented, the morbidity and mortality levels are still rising-cardiovascular disease is responsible for more than four million deaths each year in Europe alone. Even though nutrition is classified as one of the main and changeable risk factors, the quality of the diet in the majority of people does not follow the recommendations essential for prevention of obesity and cardiovascular disease. It demonstrates the need for better nutritional education in cardiovascular disease prevention and treatment, and the need to emphasize dietary components most relevant in cardiovascular disease. In our non-systematic review, we summarize the most recent knowledge about nutritional risk and prevention in cardiovascular disease and obesity.
Collapse
Affiliation(s)
- Anna Maria Rychter
- Department of Gastroenterology, Dietetics and Internal Diseases, University of Medical Sciences Poznan, 49 Przybyszewskiego Street, 60-355 Poznan, Poland; (A.E.R.); (A.Z.); (A.D.)
| | | | | | | | - Iwona Krela-Kaźmierczak
- Department of Gastroenterology, Dietetics and Internal Diseases, University of Medical Sciences Poznan, 49 Przybyszewskiego Street, 60-355 Poznan, Poland; (A.E.R.); (A.Z.); (A.D.)
| |
Collapse
|
14
|
Desmond MA, Sobiecki J, Fewtrell M, Wells JCK. Plant-based diets for children as a means of improving adult cardiometabolic health. Nutr Rev 2019; 76:260-273. [PMID: 29506219 DOI: 10.1093/nutrit/nux079] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Cardiovascular disease (CVD) is the largest contributor to global mortality, and this trend is expected to continue. Although mortality rates have been falling, adverse developments in obesity and diabetes threaten to reverse this. It has been estimated that the only viable strategy to reduce the epidemic is to focus on population-wide risk factor reduction. Primordial prevention, a strategy aimed at avoiding the development of risk factors before the disease onset, has been shown to reduce the CVD epidemic substantially. Plant-based diets appear beneficial for prevention of cardiometabolic diseases, with adult vegetarians and vegans having lower CVD risk than omnivores. Atherosclerosis starts in childhood and progresses in relation to classical CVD risk factors, which, along with dietary habits, track to adulthood. Based on this evidence, it is proposed that plant-based diets in childhood could promote cardiometabolic health in adults and thereby reduce CVD and promote longevity and health. However, the need for additional research to establish the safety of predominantly or exclusively plant-based diets in children is noted.
Collapse
Affiliation(s)
- Malgorzata A Desmond
- UCL Great Ormond Street Institute of Child Health, University College London, London, United Kingdom.,Department of Paediatrics, Nutrition and Metabolic Diseases, Children's Memorial Health Institute, Warsaw, Poland
| | - Jakub Sobiecki
- Department of Paediatrics, Nutrition and Metabolic Diseases, Children's Memorial Health Institute, Warsaw, Poland.,School of Public Health, Imperial College, London, United Kingdom
| | - Mary Fewtrell
- UCL Great Ormond Street Institute of Child Health, University College London, London, United Kingdom
| | - Jonathan C K Wells
- UCL Great Ormond Street Institute of Child Health, University College London, London, United Kingdom
| |
Collapse
|
15
|
Cinegaglia N, Antoniazzi L, Rosa D, Miranda D, Acosta-Navarro J, Bortolotto L, Hong V, Sandrim V. Shortening telomere is associated with subclinical atherosclerosis biomarker in omnivorous but not in vegetarian healthy men. Aging (Albany NY) 2019; 11:5070-5080. [PMID: 31326965 PMCID: PMC6682516 DOI: 10.18632/aging.102098] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2019] [Accepted: 07/11/2019] [Indexed: 06/10/2023]
Abstract
Telomere length is considered to be a biomarker of biological aging and age-related disease. There are few studies that have evaluated the association between telomere length and diet, and none of them have evaluated the impact of a vegetarian diet on telomere length and its correlation with cardiovascular biomarkers in apparently healthy subjects. Therefore, our objectives were to evaluate leukocyte telomere length (LTL) in vegetarians and omnivorous subjects and its association with classical cardiovascular risk biomarkers. From the total of 745 participants initially recruited, 44 omnivorous and 44 vegetarian men apparently healthy were selected for this study and LTL was measured in 39 omnivorous and 41 vegetarians by Real-Time Quantitative PCR reaction. Although telomere length was not different between omnivorous and vegetarians, we found a strong negative correlation between LTL and IMT (intima-media thickness) in omnivorous, but not in vegetarian group. In addition, omnivorous who were classified with short telomere length had higher carotid IMT compared to vegetarians. Our data suggest that telomere length can be a marker of subclinical atherosclerosis in the omnivorous group.
Collapse
Affiliation(s)
- Naiara Cinegaglia
- Institute of Bioscience, São Paulo State University – IBB/UNESP, Botucatu, São Paulo, Brazil
| | - Luiza Antoniazzi
- Heart Institute (InCor), Medical School, University of São Paulo, São Paulo, Brazil
| | - Daniela Rosa
- Laboratory of Molecular Medicine, Medical School, Federal University of Minas Gerais, UFMG, Minas Gerais, Brazil
| | - Debora Miranda
- Laboratory of Molecular Medicine, Medical School, Federal University of Minas Gerais, UFMG, Minas Gerais, Brazil
| | - Julio Acosta-Navarro
- Heart Institute (InCor), Medical School, University of São Paulo, São Paulo, Brazil
| | - Luiz Bortolotto
- Heart Institute (InCor), Medical School, University of São Paulo, São Paulo, Brazil
| | - Valeria Hong
- Heart Institute (InCor), Medical School, University of São Paulo, São Paulo, Brazil
| | - Valeria Sandrim
- Institute of Bioscience, São Paulo State University – IBB/UNESP, Botucatu, São Paulo, Brazil
| |
Collapse
|
16
|
Yaskolka Meir A, Tsaban G, Zelicha H, Rinott E, Kaplan A, Youngster I, Rudich A, Shelef I, Tirosh A, Brikner D, Pupkin E, Sarusi B, Blüher M, Stümvoll M, Thiery J, Ceglarek U, Stampfer MJ, Shai I. A Green-Mediterranean Diet, Supplemented with Mankai Duckweed, Preserves Iron-Homeostasis in Humans and Is Efficient in Reversal of Anemia in Rats. J Nutr 2019; 149:1004-1011. [PMID: 30915471 DOI: 10.1093/jn/nxy321] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2018] [Revised: 10/31/2018] [Accepted: 12/18/2018] [Indexed: 12/21/2022] Open
Abstract
BACKGROUND Decreased dietary meat may deplete iron stores, as plant-derived iron bioavailability is typically limited. OBJECTIVES We explored the effect of a low-meat Mediterranean (green-MED) diet, supplemented with Wolffia globosa duckweed (Mankai: rich in protein and iron) as a food source for humans, on iron status. We further examined the iron bioavailability of Mankai in rats. METHODS Two hundred and ninety-four abdominally obese/dyslipidemic [mean age = 51.1 y; body mass index (kg/m2) = 31.3; 88% men] nonanemic participants were randomly assigned to physical activity (PA), PA + MED diet, or PA + green-MED diet. Both isocaloric MED groups consumed 28 g walnuts/d and the low-meat green-MED group further consumed green tea (800 mL/d) and Mankai (100 g green shake/d). In a complementary animal experiment, after 44 d of an iron deficiency anemia-inducing diet, 50 female rats (age = 3 wk; Sprague Dawley strain) were randomly assigned into: iron-deficient diet (vehicle), or vehicle + iso-iron: ferrous gluconate (FG) 14, Mankai 50, and Mankai 80 versions (1.7 mg · kg-1 · d-1 elemental iron), or FG9.5 and Mankai 50-C version (1.15 mg · kg-1 · d-1 elemental iron). The specific primary aim for both studies was changes in iron homeostasis parameters. RESULTS After 6 mo of intervention, iron status trajectory did not differ between the PA and PA + MED groups. Hemoglobin modestly increased in the PA + green-MED group (0.23 g/dL) compared with PA (-0.1 g/dL; P < 0.001) and PA + MED (-0.1 g/dL; P < 0.001). Serum iron and serum transferrin saturation increased in the PA + green-MED group compared with the PA group (8.21 μg/dL compared with -5.23 μg/dL and 2.39% compared with -1.15%, respectively; P < 0.05 for both comparisons), as did folic acid (P = 0.011). In rats, hemoglobin decreased from 15.7 to 9.4 mg/dL after 44 d of diet-induced anemia. After depletion treatment, the vehicle-treated group had a further decrease of 1.3 mg/dL, whereas hemoglobin concentrations in both FG and Mankai iso-iron treatments similarly rebounded (FG14: +10.8 mg/dL, Mankai 50: +6.4 mg/dL, Mankai 80: +7.3 mg/dL; FG9.5: +5.1 mg/dL, Mankai 50-C: +7.1 mg/dL; P < 0.05 for all vs. the vehicle group). CONCLUSIONS In humans, a green-MED low-meat diet does not impair iron homeostasis. In rats, iron derived from Mankai (a green-plant protein source) is bioavailable and efficient in reversal of anemia. This trial was registered at clinicaltrials.gov as NCT03020186.
Collapse
Affiliation(s)
- Anat Yaskolka Meir
- Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | - Gal Tsaban
- Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | - Hila Zelicha
- Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | - Ehud Rinott
- Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | - Alon Kaplan
- Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | - Ilan Youngster
- Division of Pediatrics and the Microbiome Research Center, Assaf Harofeh Medical Center, Zerifin, Israel
| | - Assaf Rudich
- Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | - Ilan Shelef
- Soroka University Medical Center, Beer-Sheva, Israel
| | - Amir Tirosh
- Endocrinology and Diabetes Research Center at Sheba Medical Center, Ramat Gan, Israel.,Harvard TH Chan School of Public Health and Channing Division of Network Medicine, Department of Medicine, Harvard Medical School and Brigham and Women's Hospital, Boston, MA
| | - Dov Brikner
- Department of Medicine, Nuclear Research Center Negev, Dimona, Israel
| | - Efrat Pupkin
- Department of Medicine, Nuclear Research Center Negev, Dimona, Israel
| | - Benjamin Sarusi
- Department of Medicine, Nuclear Research Center Negev, Dimona, Israel
| | - Matthias Blüher
- Department of Medicine, University of Leipzig, Leipzig, Germany
| | | | - Joachim Thiery
- Department of Medicine, University of Leipzig, Leipzig, Germany
| | - Uta Ceglarek
- Department of Medicine, University of Leipzig, Leipzig, Germany
| | - Meir J Stampfer
- Harvard TH Chan School of Public Health and Channing Division of Network Medicine, Department of Medicine, Harvard Medical School and Brigham and Women's Hospital, Boston, MA
| | - Iris Shai
- Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva, Israel
| |
Collapse
|
17
|
Winiarska-Mieczan A, Kowalczuk-Vasilev E, Kwiatkowska K, Kwiecień M, Baranowska-Wójcik E, Kiczorowska B, Klebaniuk R, Samolińska W. Dietary Intake and Content of Cu, Mn, Fe, and Zn in Selected Cereal Products Marketed in Poland. Biol Trace Elem Res 2019; 187:568-578. [PMID: 29777526 PMCID: PMC6329733 DOI: 10.1007/s12011-018-1384-0] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/04/2018] [Accepted: 05/08/2018] [Indexed: 12/31/2022]
Abstract
This paper aims to verify whether cereal products are a good source of Cu, Mn, Fe, and Zn in the diets of Poles. The study material comprised of 445 cereal products including baked goods, breakfast cereals and groats, pasta, and rice. Products that required culinary treatment (pasta, groats, rice) were boiled in drinking quality water as recommended by the producer. The content of Cu, Mn, Fe, and Zn was determined by using the FAAS method. The average content of microelements in the analyzed products can be represented as Fe (17.9 mg kg-1 ± 10.3) > Zn (12.4 mg kg-1 ± 5.2) > Mn (9.6 mg kg-1 ± 6.7) > Cu (3.9 mg kg-1 ± 2.9). Considering the daily requirement of the analyzed minerals among adult Poles, it was determined that cereal products supply 58% RDA Cu, 61% AI Mn (men)-78% AI Mn (women), 19% RDA Fe (women)-34% RDA Fe (men), and 16% RDA Zn (men)-22% RDA Fe (women). Baked goods account for as much as about 90% of all Cu, Mn, Fe, and Zn consumed as cereal products in a daily diet. Based on the results, it can be concluded that cereal products are the main source of Cu, Mn, Fe, and Zn in the diets of Poles. In connection with low assimilability of minerals, they should not be considered the fundamental source of those microelements in the diets of Poles.
Collapse
Affiliation(s)
- Anna Winiarska-Mieczan
- Department of Bromatology and Food Physiology, University of Life Sciences in Lublin, Akademicka 13, 20-950, Lublin, Poland.
| | - Edyta Kowalczuk-Vasilev
- Department of Bromatology and Food Physiology, University of Life Sciences in Lublin, Akademicka 13, 20-950, Lublin, Poland
| | - Katarzyna Kwiatkowska
- Department of Bromatology and Food Physiology, University of Life Sciences in Lublin, Akademicka 13, 20-950, Lublin, Poland
| | - Małgorzata Kwiecień
- Department of Bromatology and Food Physiology, University of Life Sciences in Lublin, Akademicka 13, 20-950, Lublin, Poland
| | - Ewa Baranowska-Wójcik
- Department of Biotechnology, Microbiology and Human Nutrition, University of Life Sciences in Lublin, Lublin, Poland
| | - Bożena Kiczorowska
- Department of Bromatology and Food Physiology, University of Life Sciences in Lublin, Akademicka 13, 20-950, Lublin, Poland
| | - Renata Klebaniuk
- Department of Bromatology and Food Physiology, University of Life Sciences in Lublin, Akademicka 13, 20-950, Lublin, Poland
| | - Wioletta Samolińska
- Department of Bromatology and Food Physiology, University of Life Sciences in Lublin, Akademicka 13, 20-950, Lublin, Poland
| |
Collapse
|
18
|
Moore RET, Rehkämper M, Maret W, Larner F. Assessment of coupled Zn concentration and natural stable isotope analyses of urine as a novel probe of Zn status. Metallomics 2019; 11:1506-1517. [DOI: 10.1039/c9mt00160c] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Heavier Zn isotope compositions in urine compared to blood serum and an accompanying isotope-concentration trend likely reflects Zn processing in the kidneys in response to bodily Zn requirements.
Collapse
Affiliation(s)
| | - Mark Rehkämper
- Department of Earth Science and Engineering
- Imperial College London
- London
- UK
| | - Wolfgang Maret
- Department of Nutritional Sciences
- King's College London
- London
- UK
| | - Fiona Larner
- Department of Earth Sciences
- University of Oxford
- Oxford
- UK
| |
Collapse
|
19
|
Soldati L, Di Renzo L, Jirillo E, Ascierto PA, Marincola FM, De Lorenzo A. The influence of diet on anti-cancer immune responsiveness. J Transl Med 2018; 16:75. [PMID: 29558948 PMCID: PMC5859494 DOI: 10.1186/s12967-018-1448-0] [Citation(s) in RCA: 130] [Impact Index Per Article: 21.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2017] [Accepted: 03/12/2018] [Indexed: 02/06/2023] Open
Abstract
Immunotherapy has matured into standard treatment for several cancers, but much remains to be done to extend the reach of its effectiveness particularly to cancers that are resistant within each indication. This review proposes that nutrition can affect and potentially enhance the immune response against cancer. The general mechanisms that link nutritional principles to immune function and may influence the effectiveness of anticancer immunotherapy are examined. This represents also the premise for a research project aimed at identifying the best diet for immunotherapy enhancement against tumours (D.I.E.T project). Particular attention is turned to the gut microbiota and the impact of its composition on the immune system. Also, the dietary patterns effecting immune function are discussed including the value of adhering to a healthy diets such as the Mediterranean, Veg, Japanese, or a Microbiota-regulating diet, the very low ketogenic diet, which have been demonstrated to lower the risk of developing several cancers and reduce the mortality associated with them. Finally, supplements, as omega-3 and polyphenols, are discussed as potential approaches that could benefit healthy dietary and lifestyle habits in the context of immunotherapy.
Collapse
Affiliation(s)
- Laura Soldati
- Department of Health Sciences, Università degli Studi di Milano, Via A di Rudinì 8, 20124, Milan, Italy.
| | - Laura Di Renzo
- Section of Clinical Nutrition and Nutrigenomics, Department of Biomedicine and Prevention, University of Rome Tor Vergata, Via Montpellier 1, 00133, Rome, Italy
| | - Emilio Jirillo
- Department of Basic Medical Sciences, Neuroscience and Sensory Organs, University of Bari, 70124, Bari, Italy
| | - Paolo A Ascierto
- Melanoma, Cancer Immunotherapy and Development Therapeutics Unit, Istituto Nazionale Tumori IRCCS Fondazione "G. Pascale", Via Mariano Semmola snc, 80131, Naples, Italy
| | | | - Antonino De Lorenzo
- Section of Clinical Nutrition and Nutrigenomics, Department of Biomedicine and Prevention, University of Rome Tor Vergata, Via Montpellier 1, 00133, Rome, Italy
| |
Collapse
|
20
|
Sofi F, Dinu M, Pagliai G, Cesari F, Gori AM, Sereni A, Becatti M, Fiorillo C, Marcucci R, Casini A. Low-Calorie Vegetarian Versus Mediterranean Diets for Reducing Body Weight and Improving Cardiovascular Risk Profile: CARDIVEG Study (Cardiovascular Prevention With Vegetarian Diet). Circulation 2018; 137:1103-1113. [PMID: 29483085 DOI: 10.1161/circulationaha.117.030088] [Citation(s) in RCA: 119] [Impact Index Per Article: 19.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/19/2017] [Accepted: 10/31/2017] [Indexed: 11/16/2022]
Abstract
BACKGROUND Only a few randomized dietary intervention studies that investigated the effects of lacto-ovo vegetarian diet (Vd) in clinically healthy omnivorous subjects are available. METHODS We randomly assigned to overweight omnivores with a low-to-moderate cardiovascular risk profile a low-calorie Vd compared with a low-calorie Mediterranean diet (MD), each lasting 3 months, with a crossover design. The primary outcome was the difference in body weight, body mass index, and fat mass changes between the 2 groups. Secondary outcomes were differences in circulating cardiovascular disease risk parameters changes between the 2 groups. RESULTS One hundred eighteen subjects (mean age: 51.1 years, females: 78%) were enrolled. The total participation rate at the end of the study was 84.7%. No differences between the 2 diets in body weight were observed, as reported by similar and significant reductions obtained by both Vd (-1.88 kg) and MD (-1.77 kg). Similar results were observed for body mass index and fat mass. In contrast, significant differences between the 2 interventions were obtained for low-density lipoprotein cholesterol, triglycerides, and vitamin B12 levels. The difference between the Vd and MD groups, in terms of end-of-diet values, was recorded at 9.10 mg/dL for low-density lipoprotein cholesterol (P=0.01), 12.70 mg/dL for triglycerides (P<0.01), and 32.32 pg/mL for vitamin B12 (P<0.01). Finally, no significant difference was found between Vd and MD interventions in oxidative stress markers and inflammatory cytokines, except for interleukin-17, which improved only in the MD group. Forty-six participants during the Vd period and 35 during the MD period reached the target values for ≥1 cardiovascular risk factor. CONCLUSIONS Both Vd and MD were effective in reducing body weight, body mass index, and fat mass, with no significant differences between them. However, Vd was more effective in reducing low-density lipoprotein cholesterol levels, whereas MD led to a greater reduction in triglyceride levels. CLINICAL TRIAL REGISTRATION URL: https://www.clinicaltrials.gov. Unique identifier: NCT02641834.
Collapse
Affiliation(s)
- Francesco Sofi
- Departments of Experimental and Clinical Medicine (F.S., M.D., G.P., R.M., A.M.G., A.S., A.C.) .,Clinical Nutrition Unit (F.S., A.C.).,Don Carlo Gnocchi Foundation Italy, Onlus Istituto di Ricerca e Cura a Carattere Scientifico, Florence, Italy (F.S.)
| | - Monica Dinu
- Departments of Experimental and Clinical Medicine (F.S., M.D., G.P., R.M., A.M.G., A.S., A.C.)
| | - Giuditta Pagliai
- Departments of Experimental and Clinical Medicine (F.S., M.D., G.P., R.M., A.M.G., A.S., A.C.)
| | | | - Anna Maria Gori
- Departments of Experimental and Clinical Medicine (F.S., M.D., G.P., R.M., A.M.G., A.S., A.C.).,Atherothrombotic Unit (A.M.G., A.S., R.M.), Careggi University Hospital, Florence, Italy
| | - Alice Sereni
- Departments of Experimental and Clinical Medicine (F.S., M.D., G.P., R.M., A.M.G., A.S., A.C.).,Atherothrombotic Unit (A.M.G., A.S., R.M.), Careggi University Hospital, Florence, Italy
| | - Matteo Becatti
- Clinical and Experimental Biomedical Sciences (M.B., C.F.), University of Florence, Italy
| | - Claudia Fiorillo
- Clinical and Experimental Biomedical Sciences (M.B., C.F.), University of Florence, Italy
| | - Rossella Marcucci
- Departments of Experimental and Clinical Medicine (F.S., M.D., G.P., R.M., A.M.G., A.S., A.C.).,Atherothrombotic Unit (A.M.G., A.S., R.M.), Careggi University Hospital, Florence, Italy
| | - Alessandro Casini
- Departments of Experimental and Clinical Medicine (F.S., M.D., G.P., R.M., A.M.G., A.S., A.C.).,Clinical Nutrition Unit (F.S., A.C.)
| |
Collapse
|
21
|
Association of vegetarian diet with inflammatory biomarkers: a systematic review and meta-analysis of observational studies. Public Health Nutr 2017; 20:2713-2721. [PMID: 28836492 DOI: 10.1017/s1368980017001768] [Citation(s) in RCA: 74] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
OBJECTIVE Vegetarian diets contain various anti-inflammatory components. We aimed to investigate the effects of vegetarianism on inflammatory biomarkers when compared with omnivores. DESIGN Systematic review and meta-analysis. SETTING Literature search was conducted in Science Direct, Proquest, MEDLINE and Google Scholar up to June 2016. Summary estimates and corresponding 95 % CI were derived via the DerSimonian and Laird method using random effects, subgroup analyses were run to find the source of heterogeneity and a fixed-effect model examined between-subgroup heterogeneity. SUBJECTS Studies were included if they evaluated effects of any type of vegetarianism compared with omnivores on circulating levels of inflammatory biomarkers. No restriction was made in terms of language or the date of study publications. RESULTS Eighteen articles were included. Pooled effect size showed no difference in high-sensitivity C-reactive protein (hs-CRP) levels in vegetarians v. omnivores (Hedges' g=-0·15; 95 % CI -0·35, 0·05), with high heterogeneity (I 2=75·6 %, P<0·01). A subgroup analysis by minimum duration of vegetarianism showed that a minimum duration of 2 years vegetarianism was associated with lower hs-CRP levels v. omnivores (Hedges' g=-0·29; 95 % CI -0·59, 0·01), with moderate heterogeneity (I 2=68·9 %, P<0·01). No significant effect was found in studies using a minimum duration of 6 months of vegetarianism, with low heterogeneity. Vegetarianism was associated with increased IL-6 concentrations (0·21 pg/ml; 95 % CI 0·18, 0·25), with no heterogeneity (I 2=0·0 %, P=0·60). CONCLUSIONS The meta-analysis provides evidence that vegetarianism is associated with lower serum concentrations of hs-CRP when individuals follow a vegetarian diet for at least 2 years. Further research is necessary to draw appropriate conclusions regarding potential associations between vegetarianism and IL-6 levels. A vegetarian diet might be a useful approach to manage inflammaging in the long term.
Collapse
|
22
|
Rizzo G, Laganà AS, Rapisarda AMC, La Ferrera GMG, Buscema M, Rossetti P, Nigro A, Muscia V, Valenti G, Sapia F, Sarpietro G, Zigarelli M, Vitale SG. Vitamin B12 among Vegetarians: Status, Assessment and Supplementation. Nutrients 2016; 8:E767. [PMID: 27916823 PMCID: PMC5188422 DOI: 10.3390/nu8120767] [Citation(s) in RCA: 171] [Impact Index Per Article: 21.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2016] [Revised: 11/23/2016] [Accepted: 11/23/2016] [Indexed: 02/06/2023] Open
Abstract
Cobalamin is an essential molecule for humans. It acts as a cofactor in one-carbon transfers through methylation and molecular rearrangement. These functions take place in fatty acid, amino acid and nucleic acid metabolic pathways. The deficiency of vitamin B12 is clinically manifested in the blood and nervous system where the cobalamin plays a key role in cell replication and in fatty acid metabolism. Hypovitaminosis arises from inadequate absorption, from genetic defects that alter transport through the body, or from inadequate intake as a result of diet. With the growing adoption of vegetarian eating styles in Western countries, there is growing focus on whether diets that exclude animal foods are adequate. Since food availability in these countries is not a problem, and therefore plant foods are sufficiently adequate, the most delicate issue remains the contribution of cobalamin, which is poorly represented in plants. In this review, we will discuss the status of vitamin B12 among vegetarians, the diagnostic markers for the detection of cobalamin deficiency and appropriate sources for sufficient intake, through the description of the features and functions of vitamin B12 and its absorption mechanism.
Collapse
Affiliation(s)
| | - Antonio Simone Laganà
- Unit of Gynecology and Obstetrics, Department of Human Pathology in Adulthood and Childhood, "G. Barresi", University of Messina, Via Consolare Valeria 1, Messina 98125, Italy.
| | - Agnese Maria Chiara Rapisarda
- Department of General Surgery and Medical Surgical Specialties, University of Catania, Via S. Sofia 78, Catania 95124, Italy.
| | - Gioacchina Maria Grazia La Ferrera
- Department of Gastroenterology and Digestive Endoscopy Maddalena Raimondi San Cataldo, Via Forlanini 5, San Cataldo, Caltanissetta 93017, Italy.
| | - Massimo Buscema
- Unit of Diabetology and Endocrino-Metabolic Diseases, Hospital for Emergency Cannizzaro, Via Messina 829, Catania 95126, Italy.
| | - Paola Rossetti
- Unit of Diabetology and Endocrino-Metabolic Diseases, Hospital for Emergency Cannizzaro, Via Messina 829, Catania 95126, Italy.
| | - Angela Nigro
- Unit of Diabetology and Endocrino-Metabolic Diseases, Hospital for Emergency Cannizzaro, Via Messina 829, Catania 95126, Italy.
| | - Vincenzo Muscia
- Unit of Diabetology and Endocrino-Metabolic Diseases, Hospital for Emergency Cannizzaro, Via Messina 829, Catania 95126, Italy.
| | - Gaetano Valenti
- Department of General Surgery and Medical Surgical Specialties, University of Catania, Via S. Sofia 78, Catania 95124, Italy.
| | - Fabrizio Sapia
- Department of General Surgery and Medical Surgical Specialties, University of Catania, Via S. Sofia 78, Catania 95124, Italy.
| | - Giuseppe Sarpietro
- Department of General Surgery and Medical Surgical Specialties, University of Catania, Via S. Sofia 78, Catania 95124, Italy.
| | - Micol Zigarelli
- Department of General Surgery and Medical Surgical Specialties, University of Catania, Via S. Sofia 78, Catania 95124, Italy.
| | - Salvatore Giovanni Vitale
- Unit of Gynecology and Obstetrics, Department of Human Pathology in Adulthood and Childhood, "G. Barresi", University of Messina, Via Consolare Valeria 1, Messina 98125, Italy.
| |
Collapse
|
23
|
do Rosario VA, Fernandes R, Trindade EBSDM. Vegetarian diets and gut microbiota: important shifts in markers of metabolism and cardiovascular disease. Nutr Rev 2016; 74:444-54. [PMID: 27261272 DOI: 10.1093/nutrit/nuw012] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Vegetarian diets have been associated with a lower incidence of several chronic diseases. The benefits of plant-based diets are related mainly to the improvement of metabolic parameters that can indicate risk for such diseases. Some metabolic factors, such as oxidative balance, lipid profile, and glucose homeostasis, can be improved directly by diet, but paradoxically, some characteristics of vegetarian diets may promote a negative scenario that increases the risk of certain chronic diseases. Additionally, many benefits of a vegetarian diet are mediated by the gut microbiota, members of which not only have taxonomic and functional differences but also produce diverse, specific metabolites that vary according to whether the host consumes an omnivorous or a vegetarian diet. This review examines the modulation of human metabolism and gut microbiota by vegetarian and omnivorous dietary patterns and explores how this modulation may affect the risk of cardiovascular disease.
Collapse
Affiliation(s)
- Vinicius A do Rosario
- V.A. do Rosario, R. Fernandes, and E.B.S. de M. Trindade are with the Department of Nutrition and Post-Graduate Program in Nutrition, Federal University of Santa Catarina, Florianópolis, Santa Catarina, Brazil.
| | - Ricardo Fernandes
- V.A. do Rosario, R. Fernandes, and E.B.S. de M. Trindade are with the Department of Nutrition and Post-Graduate Program in Nutrition, Federal University of Santa Catarina, Florianópolis, Santa Catarina, Brazil
| | - Erasmo B S de M Trindade
- V.A. do Rosario, R. Fernandes, and E.B.S. de M. Trindade are with the Department of Nutrition and Post-Graduate Program in Nutrition, Federal University of Santa Catarina, Florianópolis, Santa Catarina, Brazil
| |
Collapse
|
24
|
Wang F, Zheng J, Yang B, Jiang J, Fu Y, Li D. Effects of Vegetarian Diets on Blood Lipids: A Systematic Review and Meta-Analysis of Randomized Controlled Trials. J Am Heart Assoc 2015; 4:e002408. [PMID: 26508743 PMCID: PMC4845138 DOI: 10.1161/jaha.115.002408] [Citation(s) in RCA: 171] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/24/2015] [Accepted: 09/09/2015] [Indexed: 01/24/2023]
Abstract
BACKGROUND Vegetarian diets exclude all animal flesh and are being widely adopted by an increasing number of people; however, effects on blood lipid concentrations remain unclear. This meta-analysis aimed to quantitatively assess the overall effects of vegetarian diets on blood lipids. METHODS AND RESULTS We searched PubMed, Scopus, Embase, ISI Web of Knowledge, and the Cochrane Library through March 2015. Studies were included if they described the effectiveness of vegetarian diets on blood lipids (total cholesterol, low-density lipoprotein cholesterol, high-density lipoprotein cholesterol, and triglyceride). Weighted mean effect sizes were calculated for net changes by using a random-effects model. We performed subgroup and univariate meta-regression analyses to explore sources of heterogeneity. Eleven trials were included in the meta-analysis. Vegetarian diets significantly lowered blood concentrations of total cholesterol, low-density lipoprotein cholesterol, high-density lipoprotein cholesterol, and non-high-density lipoprotein cholesterol, and the pooled estimated changes were -0.36 mmol/L (95% CI -0.55 to -0.17; P<0.001), -0.34 mmol/L (95% CI -0.57 to -0.11; P<0.001), -0.10 mmol/L (95% CI -0.14 to -0.06; P<0.001), and -0.30 mmol/L (95% CI -0.50 to -0.10; P=0.04), respectively. Vegetarian diets did not significantly affect blood triglyceride concentrations, with a pooled estimated mean difference of 0.04 mmol/L (95% CI -0.05 to 0.13; P=0.40). CONCLUSIONS This systematic review and meta-analysis provides evidence that vegetarian diets effectively lower blood concentrations of total cholesterol, low-density lipoprotein cholesterol, high-density lipoprotein cholesterol, and non-high-density lipoprotein cholesterol. Such diets could be a useful nonpharmaceutical means of managing dyslipidemia, especially hypercholesterolemia.
Collapse
Affiliation(s)
- Fenglei Wang
- Department of Food Science and NutritionZhejiang UniversityHangzhouChina
| | - Jusheng Zheng
- Department of Food Science and NutritionZhejiang UniversityHangzhouChina
| | - Bo Yang
- Department of Food Science and NutritionZhejiang UniversityHangzhouChina
| | - Jiajing Jiang
- Department of Food Science and NutritionZhejiang UniversityHangzhouChina
| | - Yuanqing Fu
- Department of Food Science and NutritionZhejiang UniversityHangzhouChina
| | - Duo Li
- Department of Food Science and NutritionZhejiang UniversityHangzhouChina
| |
Collapse
|
25
|
Saunders AV, Davis BC, Garg ML. Omega-3 polyunsaturated fatty acids and vegetarian diets. Med J Aust 2015; 199:S22-6. [PMID: 25369925 DOI: 10.5694/mja11.11507] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
While intakes of the omega-3 fatty acid α-linolenic acid (ALA) are similar in vegetarians and non-vegetarians, intakes of eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) are low in vegetarians and virtually absent in vegans. Plasma, blood and tissue levels of EPA and DHA are lower in vegetarians than in non-vegetarians, although the clinical significance of this is unknown. Vegetarians do not exhibit clinical signs of DHA deficiency, but further research is required to ascertain whether levels observed in vegetarians are sufficient to support optimal health. ALA is endogenously converted to EPA and DHA, but the process is slow and inefficient and is affected by genetics, sex, age and dietary composition. Vegetarians can take practical steps to optimise conversion of ALA to EPA and DHA, including reducing intake of linoleic acid. There are no official separate recommendations for intake of fatty acids by vegetarians. However, we suggest that vegetarians double the current adequate intake of ALA if no direct sources of EPA and DHA are consumed. Vegetarians with increased needs or reduced conversion ability may receive some advantage from DHA and EPA supplements derived from microalgae. A supplement of 200-300 mg/day of DHA and EPA is suggested for those with increased needs, such as pregnant and lactating women, and those with reduced conversion ability, such as older people or those who have chronic disease (eg, diabetes).
Collapse
Affiliation(s)
- Angela V Saunders
- Corporate Nutrition, Sanitarium Health and Wellbeing, Berkeley Vale, NSW, Australia.
| | | | - Manohar L Garg
- School of Biomedical Sciences and Pharmacy, University of Newcastle, Newcastle, NSW, Australia
| |
Collapse
|
26
|
|
27
|
Yu X, Huang T, Weng X, Shou T, Wang Q, Zhou X, Hu Q, Li D. Plasma n-3 and n-6 fatty acids and inflammatory markers in Chinese vegetarians. Lipids Health Dis 2014; 13:151. [PMID: 25266321 PMCID: PMC4196115 DOI: 10.1186/1476-511x-13-151] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2014] [Accepted: 09/14/2014] [Indexed: 01/09/2023] Open
Abstract
Background Polyunsaturated fatty acid (PUFA) intake favorably affects chronic inflammatory-related diseases such as cardiovascular disease; however, the relationship between the PUFA and inflammatory factors in the healthy vegetarians were not clear. We aimed to investigate the plasma fatty acids status, and its association with plasma inflammatory factors in Chinese vegetarians and omnivores. Methods A total of 89 male vegetarians and 106 male omnivores were participated the study. Plasma concentrations of inflammatory factors were detected by ELISA, and as standard methods fatty acids were extracted and determined by chromatography. Results Compared with omnivores, vegetarians have significant higher interleukin-6 (IL-6), plasma n-6 PUFA, n-6/n-3, and 18:3n-3; while they have significant lower leukotriene B4 (LTB4), cyclo-oxygenase-2 (COX2) and prostaglandin E2 (PGE2), 20:5n-3, 22:5n-3, 22:6n-3, and n-3 PUFA. In vegetarians, plasma 20:4n-6 was significant positively related to TNF-α. LTB4 was significantly positively related to plasma 22:6n-3, and negatively associated with n-6 PUFA. Conclusion Vegetarians have higher plasma n-6 PUFA and IL-6, but lower LTB4, n-3 PUFA, 22:6n-3, COX2 and PGE2 levels. It would seem appropriate for vegetarians to increase their dietary n-3 PUFA, while reduce dietary n-6 PUFA and thus reduce the risk of chronic inflammatory-related diseases.
Collapse
Affiliation(s)
- Xiaomei Yu
- Department of Clinical Laboratory, Zhejiang Hospital, 12 Linyin Road, Hangzhou 310030, China.
| | | | | | | | | | | | | | | |
Collapse
|
28
|
Evaluation of a validated food frequency questionnaire for self-defined vegans in the United States. Nutrients 2014; 6:2523-39. [PMID: 25006856 PMCID: PMC4113754 DOI: 10.3390/nu6072523] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2014] [Revised: 06/20/2014] [Accepted: 06/27/2014] [Indexed: 01/10/2023] Open
Abstract
This study aimed to develop and validate a de novo food frequency questionnaire for self-defined vegans in the United States. Diet histories from pilot samples of vegans and a modified ‘Block Method’ using seven selected nutrients of concern in vegan diet patterns, were employed to generate the questionnaire food list. Food frequency responses of 100 vegans from 19 different U.S. states were obtained via completed mailed questionnaires and compared to multiple telephone-conducted diet recall interviews. Computerized diet analyses were performed. Correlation coefficients, t-tests, rank, cross-tabulations, and probability tests were used to validate and compare intake estimates and dietary reference intake (DRI) assessment trends between the two methods. A 369-item vegan-specific questionnaire was developed with 252 listed food frequency items. Calorie-adjusted correlation coefficients ranged from r = 0.374 to 0.600 (p < 0.001) for all analyzed nutrients except calcium. Estimates, ranks, trends and higher-level participant percentile placements for Vitamin B12 were similar with both methods. Questionnaire intakes were higher than recalls for most other nutrients. Both methods demonstrated similar trends in DRI adequacy assessment (e.g., significantly inadequate vitamin D intake among vegans). This vegan-specific questionnaire can be a useful assessment tool for health screening initiatives in U.S. vegan communities.
Collapse
|
29
|
Watanabe F, Yabuta Y, Bito T, Teng F. Vitamin B₁₂-containing plant food sources for vegetarians. Nutrients 2014; 6:1861-73. [PMID: 24803097 PMCID: PMC4042564 DOI: 10.3390/nu6051861] [Citation(s) in RCA: 116] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2014] [Revised: 04/23/2014] [Accepted: 04/28/2014] [Indexed: 01/27/2023] Open
Abstract
The usual dietary sources of Vitamin B12 are animal-derived foods, although a few plant-based foods contain substantial amounts of Vitamin B12. To prevent Vitamin B12 deficiency in high-risk populations such as vegetarians, it is necessary to identify plant-derived foods that contain high levels of Vitamin B12. A survey of naturally occurring plant-derived food sources with high Vitamin B12 contents suggested that dried purple laver (nori) is the most suitable Vitamin B12 source presently available for vegetarians. Furthermore, dried purple laver also contains high levels of other nutrients that are lacking in vegetarian diets, such as iron and n-3 polyunsaturated fatty acids. Dried purple laver is a natural plant product and it is suitable for most people in various vegetarian groups.
Collapse
Affiliation(s)
- Fumio Watanabe
- Division of Applied Bioresources Chemistry, The United Graduate School of Agricultural Sciences, Tottori University, Tottori 680-8553, Japan.
| | - Yukinori Yabuta
- Division of Applied Bioresources Chemistry, The United Graduate School of Agricultural Sciences, Tottori University, Tottori 680-8553, Japan.
| | - Tomohiro Bito
- Division of Applied Bioresources Chemistry, The United Graduate School of Agricultural Sciences, Tottori University, Tottori 680-8553, Japan.
| | - Fei Teng
- Division of Applied Bioresources Chemistry, The United Graduate School of Agricultural Sciences, Tottori University, Tottori 680-8553, Japan.
| |
Collapse
|
30
|
Li D. Effect of the vegetarian diet on non-communicable diseases. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2014; 94:169-173. [PMID: 23965907 DOI: 10.1002/jsfa.6362] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/21/2013] [Revised: 08/11/2013] [Accepted: 08/21/2013] [Indexed: 06/02/2023]
Abstract
A vegetarian diet generally includes plenty of vegetables and fruits, which are rich in phytochemicals, antioxidants, fiber, magnesium, vitamins C and E, Fe³⁺, folic acid and n-6 polyunsaturated fatty acid (PUFA), and is low in cholesterol, total fat and saturated fatty acid, sodium, Fe²⁺, zinc, vitamin A, B₁₂ and D, and especially n-3 PUFA. Mortality from all-cause, ischemic heart disease, and circulatory and cerebrovascular diseases was significantly lower in vegetarians than in omnivorous populations. Compared with omnivores, the incidence of cancer and type 2 diabetes was also significantly lower in vegetarians. However, vegetarians have a number of increased risk factors for non-communicable diseases such as increased plasma homocysteine, mean platelet volume and platelet aggregability compared with omnivores, which are associated with low intake of vitamin B₁₂ and n-3 PUFA. Based on the present data, it would seem appropriate for vegetarians to carefully design their diet, specifically focusing on increasing their intake of vitamin B₁₂ and n-3 PUFA to further reduce already low mortality and morbidity from non-communicable diseases.
Collapse
Affiliation(s)
- Duo Li
- Department of Food Science and Nutrition, Zhejiang University, Hangzhou, 310058, China
| |
Collapse
|
31
|
Boancă MM, Colosi HA, Crăciun EC. The impact of the lacto-ovo vegetarian diet on the erythrocyte superoxide dismutase activity: a study in the Romanian population. Eur J Clin Nutr 2013; 68:184-8. [PMID: 24105324 DOI: 10.1038/ejcn.2013.179] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2012] [Revised: 08/19/2013] [Accepted: 08/19/2013] [Indexed: 11/09/2022]
Abstract
BACKGROUND/OBJECTIVES Recent studies have shown that vitamin B12 scavenges superoxide anion as effectively as superoxide dismutase (SOD), and has a key role in the defense against oxidative stress. The status of vitamin B12 is suboptimal in a substantial number of vegans and even vegetarians. We therefore evaluated in lacto-ovo vegetarians (LOVs) who did not take vitamin B12 supplements the impact of the duration of this diet on the vitamin B12 status, the erythrocyte SOD activity and the serum malondialdehyde (MDA) concentration. SUBJECTS/METHODS The study group included 38 non-vegetarians and 48 LOVs divided, according to the duration of this diet, into two subgroups: LOV1 (2-10 years) and LOV2 (11-29 years). The erythrocyte SOD activity and the serum concentrations of vitamin B12 and MDA were assayed. RESULTS In LOVs, the mean serum vitamin B12 concentration, the erythrocyte SOD activity and the mean serum MDA concentration were statistically significantly lower that in non-vegetarians. No significant association between the serum vitamin B12 and MDA concentrations and the duration of the LOV diet were observed. A significant inverse linear correlation between SOD activity and the duration of adherence to LOV diet was observed in LOVs. CONCLUSIONS The duration of LOV diet has impact only on SOD activity. Further researches, both in vitro and in vivo, are necessary to understand the underlying molecular mechanism.
Collapse
Affiliation(s)
- M M Boancă
- Faculty of Pharmacy, 'Iuliu Haţieganu' University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - H A Colosi
- Department of Medical Informatics and Biostatistics, Faculty of Medicine, 'Iuliu Haţieganu' University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - E C Crăciun
- Department of Pharmaceutical Biochemistry and Clinical Laboratory, Faculty of Pharmacy, 'Iuliu Haţieganu' University of Medicine and Pharmacy, Cluj-Napoca, Romania
| |
Collapse
|
32
|
Dyett PA, Sabaté J, Haddad E, Rajaram S, Shavlik D. Vegan lifestyle behaviors: an exploration of congruence with health-related beliefs and assessed health indices. Appetite 2013; 67:119-24. [PMID: 23583444 DOI: 10.1016/j.appet.2013.03.015] [Citation(s) in RCA: 60] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2012] [Revised: 02/06/2013] [Accepted: 03/23/2013] [Indexed: 10/27/2022]
Abstract
This study aimed to investigate health belief as a major motive for diet and lifestyle behaviors of 100 vegans in the United States; and to determine congruence with selected health and nutrition outcomes. Response data from an administered questionnaire was analyzed. Statistical analyses determined the most common factors influencing diet choice; the number of vegans practicing particular lifestyle behaviors; body mass index; and prevalence of self-reported chronic disease diagnoses. Nutrient intakes were analyzed and assessed against Dietary Reference Intakes. Health was the most reported reason for diet choice (47%). In the health belief, animal welfare, and religious/other motive categories, low percentages of chronic disease diagnoses were reported: 27%, 11%, and 15%, respectively. There were no significant differences in health behaviors and indices among vegan motive categories, except for product fat content choices. Within the entire study population, health-related vegan motive coincided with regular exercise; 71% normal BMI (mean=22.6); minimal alcohol and smoking practices; frequently consumed vegetables, nuts, and grains; healthy choices in meal types, cooking methods, and low-fat product consumption; and adequate intakes for most protective nutrients when compared to reference values. But incongruence was found with 0% intake adequacy for vitamin D; and observation of excessive sodium use.
Collapse
Affiliation(s)
- Patricia A Dyett
- Department of Agricultural Economics and Extension, Faculty of Food and Agriculture, The University of the West Indies, St. Augustine, Trinidad and Tobago.
| | | | | | | | | |
Collapse
|
33
|
Plasma total homocysteine status of vegetarians compared with omnivores: a systematic review and meta-analysis. Br J Nutr 2013; 109:785-94. [DOI: 10.1017/s000711451200520x] [Citation(s) in RCA: 66] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
There is strong evidence indicating that elevated plasma total homocysteine (tHcy) levels are a major independent biomarker and/or a contributor to chronic conditions, such as CVD. A deficiency of vitamin B12can elevate homocysteine. Vegetarians are a group of the population who are potentially at greater risk of vitamin B12deficiency than omnivores. This is the first systematic review and meta-analysis to appraise a range of studies that compared the homocysteine and vitamin B12levels of vegetarians and omnivores. The search methods employed identified 443 entries, from which, by screening using set inclusion and exclusion criteria, six eligible cohort case studies and eleven cross-sectional studies from 1999 to 2010 were revealed, which compared concentrations of plasma tHcy and serum vitamin B12of omnivores, lactovegetarians or lacto-ovovegetarians and vegans. Of the identified seventeen studies (3230 participants), only two studies reported that vegan concentrations of plasma tHcy and serum vitamin B12did not differ from omnivores. The present study confirmed that an inverse relationship exists between plasma tHcy and serum vitamin B12, from which it can be concluded that the usual dietary source of vitamin B12is animal products and those who choose to omit or restrict these products are destined to become vitamin B12deficient. At present, the available supplement, which is usually used for fortification of food, is the unreliable cyanocobalamin. A well-designed study is needed to investigate a reliable and suitable supplement to normalise the elevated plasma tHcy of a high majority of vegetarians. This would fill the gaps in the present nutritional scientific knowledge.
Collapse
|
34
|
Associations of plasma phospholipid fatty acids with plasma homocysteine in Chinese vegetarians. Br J Nutr 2012; 109:1688-94. [PMID: 22935202 DOI: 10.1017/s000711451200356x] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
The association of plasma phospholipid (PL) fatty acid composition with plasma homocysteine (Hcy) in Chinese vegetarians is not understood. The main aim of the present study was to investigate the plasma PL fatty acid status, and its association with plasma Hcy in Chinese vegetarians and omnivores. A total of 103 male vegetarians and 128 male omnivores were recruited in Linyin Temple, Hangzhou. Plasma Hcy and PL fatty acid concentrations were determined by standard methods. Compared with omnivores, plasma PL n-3 PUFA (P< 0·001), 22 : 6n-3 (P< 0·001), 22 : 5n-6 (P= 0·021), 22 : 2n-6 (P< 0·001) and SFA (P= 0·017) were significantly lower, while plasma PL n-6 PUFA (P= 0·007) and total PUFA (P< 0·001) were significantly higher in vegetarians. The prevalence of hyperhomocysteinaemia (HHcy) in vegetarians (26·47 %) was significantly higher than that in omnivores (13·28 %). In vegetarians, plasma PL 22 : 6n-3 (r − 0·257, P= 0·046) was significantly negatively associated with plasma Hcy. In omnivores, plasma PL 18 : 1n-7 (r 0·237, P= 0·030) was significantly positively associated with plasma Hcy. Plasma PL 22 : 6n-3 (r − 0·217, P= 0·048) was negatively associated with plasma Hcy in omnivores. Plasma PL SFA were positively associated with the prevalence of HHcy. It would seem appropriate for vegetarians to increase their dietary n-3 PUFA and decrease dietary SFA, and thus reduce the risk of HHcy.
Collapse
|
35
|
Zaina S, Lund G. Epigenetics: a tool to understand diet-related cardiovascular risk? JOURNAL OF NUTRIGENETICS AND NUTRIGENOMICS 2012; 4:261-74. [PMID: 22353663 DOI: 10.1159/000334584] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Cardiovascular disease (CVD) is a leading cause of mortality and is projected to hold its grim record as developing countries increase their wealth. Since specific nutritional habits are important risk factors for CVD, it is imperative to understand how ingredients of risk-associated diets convert a healthy cellular transcriptional program into a pathological one. Epigenetics has enriched our view of the genome by showing that DNA-associated regulatory proteins and RNAs, together with chemical modifications of the DNA itself, determine which parts of the DNA chain are transcribed or silent in a given phase of a cell's life. This complex biological entity--the epigenome--accounts for the enormous phenotypic diversity within a multicellular organism despite its unicellular origin. Crucially, the epigenome can be modified by diet and other exogenous factors, thus suggesting that epigenetic mechanisms might underlie pathological responses to CVD risk factors. Here, we will review the current knowledge of epigenetic mechanisms in diet-gene interactions and propose ways in which epigenetics might clarify the impact of genetic variants on CVD risk.
Collapse
Affiliation(s)
- Silvio Zaina
- Department of Medical Sciences, Division of Health Sciences, León Campus, University of Guanajuato, León, Mexico.
| | | |
Collapse
|
36
|
Kim DJ, Linnstaedt S, Palma J, Park JC, Ntrivalas E, Kwak-Kim JYH, Gilman-Sachs A, Beaman K, Hastings ML, Martin JN, Duelli DM. Plasma components affect accuracy of circulating cancer-related microRNA quantitation. J Mol Diagn 2011; 14:71-80. [PMID: 22154918 DOI: 10.1016/j.jmoldx.2011.09.002] [Citation(s) in RCA: 132] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2011] [Revised: 08/28/2011] [Accepted: 09/06/2011] [Indexed: 12/13/2022] Open
Abstract
Circulating microRNAs (miRNAs) have emerged as candidate biomarkers of various diseases and conditions including malignancy and pregnancy. This approach requires sensitive and accurate quantitation of miRNA concentrations in body fluids. Herein we report that enzyme-based miRNA quantitation, which is currently the mainstream approach for identifying differences in miRNA abundance among samples, is skewed by endogenous serum factors that co-purify with miRNAs and anticoagulant agents used during collection. Of importance, different miRNAs were affected to varying extent among patient samples. By developing measures to overcome these interfering activities, we increased the accuracy, and improved the sensitivity of miRNA detection up to 30-fold. Overall, the present study outlines key factors that prevent accurate miRNA quantitation in body fluids and provides approaches that enable faithful quantitation of miRNA abundance in body fluids.
Collapse
Affiliation(s)
- Dong-Ja Kim
- Department of Pathology, Chicago Medical School, North Chicago, Illinois 60064, USA
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
37
|
Abstract
This article presents an overview of the current knowledge, status, and use of supplements by patients before surgical operations, together with the benefits expected of the supplements by the patients. The indications, potential advantages and disadvantages, and the relationships with various aspects of the preoperative preparation and postoperative management of surgical patients are discussed, with emphasis on the significant percentage of this population that is deficient in fundamental nutrients. Recent revisions and recommendations for some of the macronutrients are presented, together with a summary of federal regulations and an oversight of supplements.
Collapse
|