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Cani PD, Van Hul M. Gut microbiota in overweight and obesity: crosstalk with adipose tissue. Nat Rev Gastroenterol Hepatol 2024; 21:164-183. [PMID: 38066102 DOI: 10.1038/s41575-023-00867-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 10/27/2023] [Indexed: 03/02/2024]
Abstract
Overweight and obesity are characterized by excessive fat mass accumulation produced when energy intake exceeds energy expenditure. One plausible way to control energy expenditure is to modulate thermogenic pathways in white adipose tissue (WAT) and/or brown adipose tissue (BAT). Among the different environmental factors capable of influencing host metabolism and energy balance, the gut microbiota is now considered a key player. Following pioneering studies showing that mice lacking gut microbes (that is, germ-free mice) or depleted of their gut microbiota (that is, using antibiotics) developed less adipose tissue, numerous studies have investigated the complex interactions existing between gut bacteria, some of their membrane components (that is, lipopolysaccharides), and their metabolites (that is, short-chain fatty acids, endocannabinoids, bile acids, aryl hydrocarbon receptor ligands and tryptophan derivatives) as well as their contribution to the browning and/or beiging of WAT and changes in BAT activity. In this Review, we discuss the general physiology of both WAT and BAT. Subsequently, we introduce how gut bacteria and different microbiota-derived metabolites, their receptors and signalling pathways can regulate the development of adipose tissue and its metabolic capacities. Finally, we describe the key challenges in moving from bench to bedside by presenting specific key examples.
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Affiliation(s)
- Patrice D Cani
- Metabolism and Nutrition Research Group (MNUT), Louvain Drug Research Institute (LDRI), UCLouvain, Université catholique de Louvain, Brussels, Belgium.
- Walloon Excellence in Life Sciences and BIOtechnology (WELBIO), WELBIO department, WEL Research Institute, Wavre, Belgium.
- Institute of Experimental and Clinical Research (IREC), UCLouvain, Université catholique de Louvain, Brussels, Belgium.
| | - Matthias Van Hul
- Metabolism and Nutrition Research Group (MNUT), Louvain Drug Research Institute (LDRI), UCLouvain, Université catholique de Louvain, Brussels, Belgium
- Walloon Excellence in Life Sciences and BIOtechnology (WELBIO), WELBIO department, WEL Research Institute, Wavre, Belgium
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Wassénius E, Porkka M, Nyström M, Søgaard Jørgensen P. A global analysis of potential self-sufficiency and diversity displays diverse supply risks. GLOBAL FOOD SECURITY 2023. [DOI: 10.1016/j.gfs.2023.100673] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/22/2023]
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3
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Pediatric strength training: benefits, concerns, and current trends. Curr Opin Pediatr 2022; 34:625-633. [PMID: 36226732 DOI: 10.1097/mop.0000000000001187] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
PURPOSE OF REVIEW With the advent of social media combined with several large-scale promotions by nationwide gym chains, pediatric interest in strength training has reached new heights during the past few years. While this is a healthy way for young gym users to build strength and stay active, there are significant risks associated with improper utilization of exercise resources. Lack of adult supervision and guidance in the gym can lead to physical injury, inappropriate use of supplements, and body image issues. The purpose of this review is to provide pediatricians with up-to-date information about well tolerated exercise practices for pubertal and prepubertal youth. RECENT FINDINGS Current exercise trends may negatively impact both the physical and mental health of participants. Various physical injuries may occur when adolescents use gym equipment incorrectly under inadequate adult supervision. Use of unproven equipment such as waist trainers may cause bodily injury, and social media content on exercising and weight loss can negatively influence adolescent body image. Potential consequences include low self-esteem and uncommon body dysmorphic disorders, such as muscle dysmorphia. Further, the intense marketing of supplements can induce pediatric gym users to engage in inappropriate consumption behaviors. The increasing accessibility of commercial gyms to youth has increased the potential for children and adolescents to be exposed to such physical and mental health hazards. SUMMARY Greater knowledge regarding strength training techniques will help pediatricians guide their patients toward well tolerated and healthy gym habits. Caregivers and medical professionals should recognize the necessity of supervision, as well as the dangers of incorrect equipment use and unsafe trends to mitigate risks and maximize benefits of pediatric gym use.
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Castorena-Gonzalez JA. Lymphatic Valve Dysfunction in Western Diet-Fed Mice: New Insights Into Obesity-Induced Lymphedema. Front Pharmacol 2022; 13:823266. [PMID: 35308249 PMCID: PMC8931217 DOI: 10.3389/fphar.2022.823266] [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: 11/27/2021] [Accepted: 02/14/2022] [Indexed: 11/13/2022] Open
Abstract
A two-way connection between obesity and lymphatic dysfunction has now been established. Clinical studies have demonstrated that obesity significantly increases the risk for developing secondary lymphedema. Using animal-models, obesity and metabolic syndrome have been linked to different aspects of lymphatic structural abnormalities and lymphatic dysfunction, including impaired contractility, impaired flow-mediated responses, impaired fluid transport, as well as increased permeability, and abnormal dendritic cell migration among others. Dysfunction of lymphatic valves is a main form of lymphatic dysfunction, known to result in severe edematous phenotypes; however, the extent of lymphatic valve deficiency in secondary lymphedema, including obesity-induced lymphedema, remains unknown. Therefore, the aims of the present study were 1) to determine whether western diet-induced obesity results in lymphatic valve dysfunction, and 2) to determine whether lymphatic valve dysfunction in western diet-induced obesity results from the diet itself, or as a consequence of the metabolic alterations induced by the diet. First, we quantitatively assessed and compared valve function in isolated popliteal and mesenteric collecting lymphatic vessels from control and western diet-induced obese C57BL/6J (WT) mice. Feeding a western diet for 14 weeks induced obesity and elevated plasma glucose and cholesterol levels when compared to controls. The function of lymphatic valves in popliteal lymphatics was not affected by diet-induced obesity; however, significant back-leak of pressure was observed in mesenteric lymphatic valves. Dysfunctional, leaky valves from obese animals also required significantly higher adverse pressure to trigger valve closure. Importantly, when subjected to treatment with a western diet, globally deficient PAI-1 mice were significantly protected against metabolic dysfunction and displayed fully functional, competent mesenteric lymphatic valves. In conclusion, our findings show for the first time that, in association with the metabolic alterations induced by the western diet, lymphatic valve dysfunction can be a critical component of obesity-induced lymphedema.
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The effect of a low carbohydrate ketogenic diet with or without exercise on postpartum weight retention, metabolic profile and physical activity performance in postpartum mice. J Nutr Biochem 2022; 102:108941. [PMID: 35017000 DOI: 10.1016/j.jnutbio.2022.108941] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2021] [Revised: 10/28/2021] [Accepted: 12/07/2021] [Indexed: 11/22/2022]
Abstract
OBJECTIVE the present study examined the effect of the isocaloric low-carbohydrate ketogenic diet (LCKD) with or without exercise training for 6 weeks on postpartum weight retention (PPWR), body composition, metabolic profile and physical activity performance in postpartum mice. METHODS postpartum mice were assigned to 4 groups (n=8/group) as follows: (1) those on a control diet without aerobic exercise (CN); (2) those on a control diet with aerobic exercise (CN+EX), (3); those on a LCKD without aerobic exercise (LCKD); (4) those on a LCKD with aerobic exercise (LCKD+EX). CN+EX and LCKD+EX mice performed 6 weeks of exercise training on a treadmill. After the 6-week intervention, physical activity performance was determined. RESULTS postpartum mice in all groups experienced progressive reductions in body weight over the study period. The LCKD group had the smallest reduction in PPWR (p<0.05). The LCKD group had significantly higher total cholesterol, low-density lipoprotein cholesterol and lactate dehydrogenase levels, and liver lipid concentrations with a worsened glucose tolerance, compared to the CN group (p<0.05). The LCKD group showed significant reductions in physical activity performance, whilst the LCKD+EX group showed significantly improvement in endurance performance, and paralleled the concomitant elevation in blood ketone levels. CONCLUSIONS 6-week LCKD feeding on its own was less effective for reducing PPWR, and more detrimental to postpartum metabolic outcomes and physical activity performance of the postpartum mice. The feasibility of a LCKD with or without exercise during the postpartum period as a strategy for managing PPWR and improving postpartum metabolic profiles should be carefully considered.
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Abstract
The observation that 64% of English adults are overweight or obese despite a rising prevalence in weight-loss attempts suggests our understanding of energy balance is fundamentally flawed. Weight-loss is induced through a negative energy balance; however, we typically view weight change as a static function, in that energy intake and energy expenditure are independent variables, resulting in a fixed rate of weight-loss assuming a constant energy deficit. Such static modelling provides the basis for the clinical assumption that a 14644 kJ (3500 kcal) deficit translates to a 1 lb weight-loss. However, this '3500 kcal (14644 kJ) rule' is consistently shown to significantly overestimate weight-loss. Static modelling disregards obligatory changes in energy expenditure associated with the loss of metabolically active tissue, i.e. skeletal muscle. Additionally, it disregards the presence of adaptive thermogenesis, the underfeeding-associated fall in resting energy expenditure beyond that caused by loss of fat-free mass. This metabolic manipulation of energy expenditure is observed from the onset of energy restriction to maintain weight at a genetically pre-determined set point. As a result, the observed magnitude of weight-loss is disproportionally less, followed by earlier weight plateau, despite strict compliance to a dietary intervention. By simulating dynamic changes in energy expenditure associated with underfeeding, mathematical modelling may provide a more accurate method of weight-loss prediction. However, accuracy at an individual level is limited due to difficulty estimating energy requirements, physical activity and dietary intake in free-living individuals. In the present paper, we aim to outline the contribution of dynamic changes in energy expenditure to weight-loss resistance and weight plateau.
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Minderis P, Fokin A, Dirmontas M, Kvedaras M, Ratkevicius A. Caloric Restriction per se Rather Than Dietary Macronutrient Distribution Plays a Primary Role in Metabolic Health and Body Composition Improvements in Obese Mice. Nutrients 2021; 13:3004. [PMID: 34578880 PMCID: PMC8466799 DOI: 10.3390/nu13093004] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2021] [Revised: 08/19/2021] [Accepted: 08/26/2021] [Indexed: 12/12/2022] Open
Abstract
Caloric restriction (CR) is of key importance in combating obesity and its associated diseases. We aimed to examine effects of dietary macronutrient distribution on weight loss and metabolic health in obese mice exposed to CR. Male C57BL/6J mice underwent diet-induced obesity for 18 weeks. Thereafter mice were exposed to a 6-week CR for up to 40% on either low-fat diet (LFD; 20, 60, 20% kcal from protein, carbohydrate, fat), low-carb diet (LCD; 20, 20, 60% kcal, respectively) or high-pro diet (HPD; 35, 35, 30% kcal, respectively) (n = 16 each). Ten mice on the obesogenic diet served as age-matched controls. Body composition was evaluated by tissue dissections. Glucose tolerance, bloods lipids and energy metabolism were measured. CR-induced weight loss was similar for LFD and LCD while HPD was associated with a greater weight loss than LCD. The diet groups did not differ from obese controls in hindlimb muscle mass, but showed a substantial decrease in body fat without differences between them. Glucose tolerance and blood total cholesterol were weight-loss dependent and mostly improved in LFD and HPD groups during CR. Blood triacylglycerol was lowered only in LCD group compared to obese controls. Thus, CR rather than macronutrient distribution in the diet plays the major role for improvements in body composition and glucose control in obese mice. Low-carbohydrate-high-fat diet more successfully reduces triacylglycerol but not cholesterol levels compared to isocaloric high-carbohydrate-low-fat weight loss diets.
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Affiliation(s)
- Petras Minderis
- Institute of Sport Science and Innovations, Lithuanian Sports University, 44221 Kaunas, Lithuania; (A.F.); (M.K.); (A.R.)
| | - Andrej Fokin
- Institute of Sport Science and Innovations, Lithuanian Sports University, 44221 Kaunas, Lithuania; (A.F.); (M.K.); (A.R.)
| | - Mantas Dirmontas
- Department of Health Promotion and Rehabilitation, Lithuanian Sports University, 44221 Kaunas, Lithuania;
| | - Mindaugas Kvedaras
- Institute of Sport Science and Innovations, Lithuanian Sports University, 44221 Kaunas, Lithuania; (A.F.); (M.K.); (A.R.)
| | - Aivaras Ratkevicius
- Institute of Sport Science and Innovations, Lithuanian Sports University, 44221 Kaunas, Lithuania; (A.F.); (M.K.); (A.R.)
- Department of Health Promotion and Rehabilitation, Lithuanian Sports University, 44221 Kaunas, Lithuania;
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Miatke A, Maher C, Fraysse F, Dumuid D, Olds T. Are all MVPA minutes equal? Associations between MVPA characteristics, independent of duration, and childhood adiposity. BMC Public Health 2021; 21:1321. [PMID: 34225692 PMCID: PMC8259325 DOI: 10.1186/s12889-021-11420-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2020] [Accepted: 06/30/2021] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND The inverse relationship between moderate-to-vigorous physical activity (MVPA) duration and childhood adiposity is well established. Less is known about how characteristics of MVPA accumulation may be associated with adiposity, independent of MVPA duration. This study aimed to investigate how the MVPA characteristics of children, other than duration (bout length, time of day, day-to-day consistency, intensity), were associated with adiposity. METHODS Cross-sectional study of the Australian arm of the International Study of Childhood Obesity, Lifestyle and the Environment (ISCOLE) (participants: n = 424, age range 9-11, 44% male). Adiposity was determined by percent body fat via bioelectrical impedance. MVPA duration and characteristics (bout length, time of day, consistency, intensity) were derived from 7-day, 24-h accelerometry. Generalised estimating equations were used to examine the individual and multivariate associations between MVPA characteristics and adiposity. RESULTS Univariate analyses showed that higher MVPA duration (β range = - 0.26,-0.15), longer bouts of MVPA (β range = 0.15,0.22) and higher MVPA intensity (β range = - 0.20,-0.13) were all inversely associated with adiposity (all p < 0.05). When models were adjusted for MVPA duration, only MVPA intensity (β range = - 0.16,-0.04) showed consistent significant associations with adiposity. CONCLUSIONS Characteristics of MVPA other than duration and intensity appear to be unrelated to adiposity.
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Affiliation(s)
- Aaron Miatke
- Alliance for Research in Exercise, Nutrition & Activity (ARENA), Allied Health and Human Performance, University of South Australia, Adelaide, Australia. .,Present address: Centre for Adolescent Health, Level 5, Murdoch Children's Research Centre, Royal Children's Hospital, 50 Flemington Road, Parkville, 3052, Australia.
| | - Carol Maher
- Alliance for Research in Exercise, Nutrition & Activity (ARENA), Allied Health and Human Performance, University of South Australia, Adelaide, Australia
| | - François Fraysse
- Alliance for Research in Exercise, Nutrition & Activity (ARENA), Allied Health and Human Performance, University of South Australia, Adelaide, Australia
| | - Dot Dumuid
- Alliance for Research in Exercise, Nutrition & Activity (ARENA), Allied Health and Human Performance, University of South Australia, Adelaide, Australia
| | - Tim Olds
- Alliance for Research in Exercise, Nutrition & Activity (ARENA), Allied Health and Human Performance, University of South Australia, Adelaide, Australia
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Freuer D, Meisinger C, Linseisen J. Causal relationship between dietary macronutrient composition and anthropometric measures: A bidirectional two-sample Mendelian randomization analysis. Clin Nutr 2021; 40:4120-4131. [PMID: 33610420 DOI: 10.1016/j.clnu.2021.01.047] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2020] [Revised: 01/26/2021] [Accepted: 01/30/2021] [Indexed: 10/22/2022]
Abstract
BACKGROUND The question whether the proportion of energy provided by fat and carbohydrates in the diet is associated with body mass index (BMI) and waist circumference (WC) is an important public health issue, but determining causality is difficult in epidemiological studies. OBJECTIVES Using a two-sample bidirectional Mendelian randomization (MR) in both a univariable and multivariable setting, we aimed to determine whether the relative proportion of different macronutrients in the diet (in % of total energy intake (E%)) is causally related to BMI and WC and vice versa. METHODS All analyses were based on genome-wide association studies including 268,922 Europeans with dietary data (SSGAC Consortium) and at least 232,101 with anthropometric measures (GIANT Consortium). An inverse-variance weighted approach using modified second-order weights within the radial regression framework was performed. Radial MR-Egger, weighted median and mode, Robust Adjusted Profile Score (RAPS), and Pleiotropy RESidual Sum and Outlier (PRESSO) methods were used in sensitivity analyses to verify MR assumptions. Additionally, multivariable MR was conducted to account for inter correlation between macronutrient intakes. All estimates represent the standard deviation (SD) change in each outcome per one SD change in the respective exposure. RESULTS We found that genetically predicted relative carbohydrate intake (E%) reduced BMI (β = -0.529; 95% CI: -0.745, -0.312; P-value = 2⋅10-6) and WC (β = -0.459; 95% CI: -0.656, -0.262; P-value = 5⋅10-6). Both effects were also supported by the multivariable approach: β = -0.441 (95% CI: -0.772, -0.109; P-value = 0.009) for BMI and β = -0.410 (95% CI: -0.667, -0.154; P-value = 0.002) for WC. Genetically predicted dietary intake of fat (E%) was weaker and positively related to both anthropometric measures. We obtained evidence that a higher BMI and WC increased the relative dietary intake of fat and protein (E%). For example, each SD higher BMI increased protein intake (E%) by 0.114 SD (95% CI: 0.081, 0.147; P-value = 9⋅10-12) and each SD higher WC increased protein intake (E%) by 0.078 SD (95% CI: 0.035, 0.121; P-value = 4⋅10-4). Sensitivity analyses confirmed these findings revealing consistent effect estimates. CONCLUSIONS Using genetic information to improve causal inference we found evidence, that a low relative carbohydrate proportion (E%) and a high proportion of fat (E%) in the diet is causally related to a higher BMI and a higher WC. Further research considering carbohydrate, fat, and protein quality and possible consequences on micronutrient intake is needed to define the implications for dietary intake recommendations.
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Affiliation(s)
- Dennis Freuer
- Chair of Epidemiology at UNIKA-T Augsburg, Ludwig-Maximilians-Universität München, 86156 Augsburg, Germany; Independent Research Group Clinical Epidemiology, Helmholtz Zentrum München, German Research Centre for Environmental Health, 85764, Neuherberg, Germany.
| | - Christa Meisinger
- Chair of Epidemiology at UNIKA-T Augsburg, Ludwig-Maximilians-Universität München, 86156 Augsburg, Germany; Independent Research Group Clinical Epidemiology, Helmholtz Zentrum München, German Research Centre for Environmental Health, 85764, Neuherberg, Germany
| | - Jakob Linseisen
- Chair of Epidemiology at UNIKA-T Augsburg, Ludwig-Maximilians-Universität München, 86156 Augsburg, Germany; Independent Research Group Clinical Epidemiology, Helmholtz Zentrum München, German Research Centre for Environmental Health, 85764, Neuherberg, Germany
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Bonfim THFD, Tavares RL, de Vasconcelos MHA, Gouveia M, Nunes PC, Soares NL, Alves RC, de Carvalho JLP, Alves AF, Pereira RDA, Cardoso GA, Silva AS, Aquino JDS. Potentially obesogenic diets alter metabolic and neurobehavioural parameters in Wistar rats: a comparison between two dietary models. J Affect Disord 2021; 279:451-461. [PMID: 33120246 DOI: 10.1016/j.jad.2020.10.034] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/27/2020] [Revised: 08/28/2020] [Accepted: 10/13/2020] [Indexed: 12/22/2022]
Abstract
BACKGROUND Clinical studies related to the obesity pandemic have intensified in recent years, being the animal studies are also considered of great relevance. However, despite the fact that many diets have been reported in the literature to induce obesity in animal models, there is still a gap regarding evidence of the efficacy of these models, considering not only changes in somatic parameters, but also the triggering of comorbidities associated with obesity. In this scenario, the aim of this study was to compare the effectiveness of western and cafeteria diets as obesity-inducing protocols, focusing on the evaluation of metabolic, somatic, oxidative, histological and behavioural parameters of Wistar rats. METHODS The rats were fed a control (CON), western (WTD) or cafeteria (CAF) diet for 16 weeks. RESULTS The CAF diet caused anxiogenic-like behaviour. Body mass (BMI), Lee and adiposity indices increased in the CAF group. CAF and WTD diets reduced glucose and insulin tolerance, caused dyslipidemia, increased lipid peroxidation and decrease antioxidant capacity in the liver, kidneys and brain. The WTD and CAF groups shows greater IL-6 protein expression in adipose tissue, developed hepatic steatosis and ischaemic neurons, whereas interstitial nephritis was observed only in the CAF group. CONCLUSION The CAF diet was most effective in inducing obesity, as shown both by the somatic parameters and by the greater number of obesity-related metabolic and neurobehavioural disorders in the evaluated rats.
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Affiliation(s)
| | - Renata Leite Tavares
- Laboratory of Experimental Nutrition, Department of Nutrition, Federal University of Paraíba (UFPB), João Pessoa, Paraíba, Brazil
| | | | - Mirela Gouveia
- Laboratory of Experimental Nutrition, Department of Nutrition, Federal University of Paraíba (UFPB), João Pessoa, Paraíba, Brazil
| | - Polyana Campos Nunes
- Laboratory of Experimental Nutrition, Department of Nutrition, Federal University of Paraíba (UFPB), João Pessoa, Paraíba, Brazil
| | - Naís Lira Soares
- Laboratory of Experimental Nutrition, Department of Nutrition, Federal University of Paraíba (UFPB), João Pessoa, Paraíba, Brazil
| | - Raquel Coutinho Alves
- Laboratory of Experimental Nutrition, Department of Nutrition, Federal University of Paraíba (UFPB), João Pessoa, Paraíba, Brazil
| | - Jader Luciano Pinto de Carvalho
- Laboratory of Experimental Nutrition, Department of Nutrition, Federal University of Paraíba (UFPB), João Pessoa, Paraíba, Brazil
| | - Adriano Francisco Alves
- Laboratory of Pathology, Department of Physiology and Pathology, Federal University of Paraíba (UFPB), João Pessoa, Paraíba, Brazil
| | - Ramon de Alencar Pereira
- Laboratory of Pathology, Department of Pathology, Federal University of Minas Gerais (UFMG), Belo Horizonte, Minas Gerais, Brazil
| | - Glêbia Alexa Cardoso
- Associate Graduate Program in Physical Education - UPE / UFPB, Department of Physical Education, Federal University of Paraíba, João Pessoa, Brazil; Laboratory of Physical Training Applied to Performance and Health, Department of Physical Education, Federal University of Paraíba (UFPB), João Pessoa, Paraíba, Brazil
| | - Alexandre Sergio Silva
- Laboratory of Physical Training Applied to Performance and Health, Department of Physical Education, Federal University of Paraíba (UFPB), João Pessoa, Paraíba, Brazil
| | - Jailane de Souza Aquino
- Laboratory of Experimental Nutrition, Department of Nutrition, Federal University of Paraíba (UFPB), João Pessoa, Paraíba, Brazil.
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Meddens SFW, de Vlaming R, Bowers P, Burik CAP, Linnér RK, Lee C, Okbay A, Turley P, Rietveld CA, Fontana MA, Ghanbari M, Imamura F, McMahon G, van der Most PJ, Voortman T, Wade KH, Anderson EL, Braun KVE, Emmett PM, Esko T, Gonzalez JR, Kiefte-de Jong JC, Langenberg C, Luan J, Muka T, Ring S, Rivadeneira F, Snieder H, van Rooij FJA, Wolffenbuttel BHR, Smith GD, Franco OH, Forouhi NG, Ikram MA, Uitterlinden AG, van Vliet-Ostaptchouk JV, Wareham NJ, Cesarini D, Harden KP, Lee JJ, Benjamin DJ, Chow CC, Koellinger PD. Genomic analysis of diet composition finds novel loci and associations with health and lifestyle. Mol Psychiatry 2021; 26:2056-2069. [PMID: 32393786 PMCID: PMC7767645 DOI: 10.1038/s41380-020-0697-5] [Citation(s) in RCA: 64] [Impact Index Per Article: 21.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/14/2018] [Revised: 02/03/2020] [Accepted: 02/20/2020] [Indexed: 12/22/2022]
Abstract
We conducted genome-wide association studies (GWAS) of relative intake from the macronutrients fat, protein, carbohydrates, and sugar in over 235,000 individuals of European ancestries. We identified 21 unique, approximately independent lead SNPs. Fourteen lead SNPs are uniquely associated with one macronutrient at genome-wide significance (P < 5 × 10-8), while five of the 21 lead SNPs reach suggestive significance (P < 1 × 10-5) for at least one other macronutrient. While the phenotypes are genetically correlated, each phenotype carries a partially unique genetic architecture. Relative protein intake exhibits the strongest relationships with poor health, including positive genetic associations with obesity, type 2 diabetes, and heart disease (rg ≈ 0.15-0.5). In contrast, relative carbohydrate and sugar intake have negative genetic correlations with waist circumference, waist-hip ratio, and neighborhood deprivation (|rg| ≈ 0.1-0.3) and positive genetic correlations with physical activity (rg ≈ 0.1 and 0.2). Relative fat intake has no consistent pattern of genetic correlations with poor health but has a negative genetic correlation with educational attainment (rg ≈-0.1). Although our analyses do not allow us to draw causal conclusions, we find no evidence of negative health consequences associated with relative carbohydrate, sugar, or fat intake. However, our results are consistent with the hypothesis that relative protein intake plays a role in the etiology of metabolic dysfunction.
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Affiliation(s)
- S. Fleur W. Meddens
- grid.12380.380000 0004 1754 9227Department of Economics, Vrije Universiteit Amsterdam, De Boelelaan 1105, 1081 HV Amsterdam, The Netherlands ,grid.6906.90000000092621349Department of Applied Economics, Erasmus School of Economics, Erasmus University Rotterdam, Burgemeester, Oudlaan 50, 3062 PA Rotterdam, The Netherlands
| | - Ronald de Vlaming
- grid.12380.380000 0004 1754 9227Department of Economics, Vrije Universiteit Amsterdam, De Boelelaan 1105, 1081 HV Amsterdam, The Netherlands
| | - Peter Bowers
- grid.38142.3c000000041936754XDepartment of Economics, Harvard University, 1805 Cambridge St, Cambridge, MA 02138 USA
| | - Casper A. P. Burik
- grid.12380.380000 0004 1754 9227Department of Economics, Vrije Universiteit Amsterdam, De Boelelaan 1105, 1081 HV Amsterdam, The Netherlands
| | - Richard Karlsson Linnér
- grid.12380.380000 0004 1754 9227Department of Economics, Vrije Universiteit Amsterdam, De Boelelaan 1105, 1081 HV Amsterdam, The Netherlands
| | - Chanwook Lee
- grid.38142.3c000000041936754XDepartment of Economics, Harvard University, 1805 Cambridge St, Cambridge, MA 02138 USA
| | - Aysu Okbay
- grid.12380.380000 0004 1754 9227Department of Economics, Vrije Universiteit Amsterdam, De Boelelaan 1105, 1081 HV Amsterdam, The Netherlands
| | - Patrick Turley
- grid.32224.350000 0004 0386 9924Analytical and Translational Genetics Unit, Massachusetts General Hospital, Richard B. Simches Research building, 185 Cambridge St, CPZN-6818, Boston, MA 02114 USA ,grid.66859.34Stanley Center for Psychiatric Genomics, The Broad Institute at Harvard and MIT, 75 Ames St, Cambridge, MA 02142 USA ,grid.42505.360000 0001 2156 6853Behavioral and Health Genomics Center, Center for Economic and Social Research, University of Southern, California, 635 Downey Way, Los Angeles, CA 90089 USA
| | - Cornelius A. Rietveld
- grid.6906.90000000092621349Department of Applied Economics, Erasmus School of Economics, Erasmus University Rotterdam, Burgemeester, Oudlaan 50, 3062 PA Rotterdam, The Netherlands ,grid.5645.2000000040459992XDepartment of Epidemiology, Erasmus MC, University Medical Center, Wytemaweg 80, 3015 GE Rotterdam, The Netherlands ,grid.6906.90000000092621349Erasmus University Rotterdam Institute for Behavior and Biology, Erasmus School of Economics, Erasmus, University Rotterdam, Burgemeester Oudlaan 50, 3062 PA Rotterdam, The Netherlands
| | - Mark Alan Fontana
- grid.239915.50000 0001 2285 8823Center for the Advancement of Value in Musculoskeletal Care, Hospital for Special Surgery, 535 East 70th Street, New York, NY 10021 USA ,grid.5386.8000000041936877XDepartment of Healthcare Policy and Research, Weill Cornell Medical College, Cornell University, 402 East 67th Street, New York, NY 10065 USA
| | - Mohsen Ghanbari
- grid.5645.2000000040459992XDepartment of Epidemiology, Erasmus MC, University Medical Center, Wytemaweg 80, 3015 GE Rotterdam, The Netherlands ,grid.411583.a0000 0001 2198 6209Department of Genetics, School of Medicine, Mashhad University of Medical Sciences, Azadi Square, University Campus, 9177948564 Mashhad, Iran
| | - Fumiaki Imamura
- MRC Epidemiology Unit, University of Cambridge School of Clinical Medicine, Institute of Metabolic Science, Cambridge Biomedical Campus Cambridge, CB2 0QQ Cambridge, UK
| | - George McMahon
- grid.5337.20000 0004 1936 7603Integrative Epidemiology Unit, Population Health Sciences, Bristol Medical School, University of Bristol, Oakfield House, Oakfield Grove, BS8 2BN Bristol, UK
| | - Peter J. van der Most
- grid.4494.d0000 0000 9558 4598Department of Epidemiology, University of Groningen, University Medical Center Groningen, Hanzeplein 1, 9713 GZ Groningen, The Netherlands
| | - Trudy Voortman
- grid.5645.2000000040459992XDepartment of Epidemiology, Erasmus MC, University Medical Center, Wytemaweg 80, 3015 GE Rotterdam, The Netherlands
| | - Kaitlin H. Wade
- grid.5337.20000 0004 1936 7603Integrative Epidemiology Unit, Population Health Sciences, Bristol Medical School, University of Bristol, Oakfield House, Oakfield Grove, BS8 2BN Bristol, UK
| | - Emma L. Anderson
- grid.5337.20000 0004 1936 7603Integrative Epidemiology Unit, Population Health Sciences, Bristol Medical School, University of Bristol, Oakfield House, Oakfield Grove, BS8 2BN Bristol, UK
| | - Kim V. E. Braun
- grid.5645.2000000040459992XDepartment of Epidemiology, Erasmus MC, University Medical Center, Wytemaweg 80, 3015 GE Rotterdam, The Netherlands
| | - Pauline M. Emmett
- grid.5337.20000 0004 1936 7603Population Health Sciences, Bristol Medical School, University of Bristol, Oakfield House, Oakfield Grove, BS8, 2BN, Bristol, UK
| | - Tonũ Esko
- grid.10939.320000 0001 0943 7661Estonian Genome Center, University of Tartu, Riia 23b, Tartu, 51010 Estonia
| | - Juan R. Gonzalez
- grid.434607.20000 0004 1763 3517Barcelona Institute for Global Health (ISGlobal), Doctor Aiguader, 88, Barcelona, 8003 Spain ,grid.5612.00000 0001 2172 2676Universitat Pompeu Fabra (UPF), Ramon Trias Fargas 25-27, Barcelona, 8005 Spain ,grid.413448.e0000 0000 9314 1427CIBER Epidemiología y Salud Pública (CIBERESP), Pabellón 11, Calle Monforte de Lemos, 3-5, Madrid, 280229 Spain
| | - Jessica C. Kiefte-de Jong
- grid.5645.2000000040459992XDepartment of Epidemiology, Erasmus MC, University Medical Center, Wytemaweg 80, 3015 GE Rotterdam, The Netherlands ,grid.5132.50000 0001 2312 1970Leiden University College, Anna van Buerenplein 301, 2595 DG Den Haag, The Netherlands
| | - Claudia Langenberg
- MRC Epidemiology Unit, University of Cambridge School of Clinical Medicine, Institute of Metabolic Science, Cambridge Biomedical Campus Cambridge, CB2 0QQ Cambridge, UK
| | - Jian’an Luan
- MRC Epidemiology Unit, University of Cambridge School of Clinical Medicine, Institute of Metabolic Science, Cambridge Biomedical Campus Cambridge, CB2 0QQ Cambridge, UK
| | - Taulant Muka
- grid.5645.2000000040459992XDepartment of Epidemiology, Erasmus MC, University Medical Center, Wytemaweg 80, 3015 GE Rotterdam, The Netherlands
| | - Susan Ring
- grid.5337.20000 0004 1936 7603Integrative Epidemiology Unit, Population Health Sciences, Bristol Medical School, University of Bristol, Oakfield House, Oakfield Grove, BS8 2BN Bristol, UK
| | - Fernando Rivadeneira
- grid.5645.2000000040459992XDepartment of Internal Medicine, Erasmus MC University Medical Center, Wytemaweg 80, 3015 GE Rotterdam, The Netherlands
| | - Harold Snieder
- grid.4494.d0000 0000 9558 4598Department of Epidemiology, University of Groningen, University Medical Center Groningen, Hanzeplein 1, 9713 GZ Groningen, The Netherlands
| | - Frank J. A. van Rooij
- grid.5645.2000000040459992XDepartment of Epidemiology, Erasmus MC, University Medical Center, Wytemaweg 80, 3015 GE Rotterdam, The Netherlands
| | - Bruce H. R. Wolffenbuttel
- grid.4494.d0000 0000 9558 4598Department of Endocrinology, University of Groningen, University Medical Center Groningen, Hanzeplein 1, 9713 GZ Groningen, The Netherlands
| | | | | | | | - George Davey Smith
- grid.5337.20000 0004 1936 7603Integrative Epidemiology Unit, Population Health Sciences, Bristol Medical School, University of Bristol, Oakfield House, Oakfield Grove, BS8 2BN Bristol, UK
| | - Oscar H. Franco
- grid.5645.2000000040459992XDepartment of Epidemiology, Erasmus MC, University Medical Center, Wytemaweg 80, 3015 GE Rotterdam, The Netherlands
| | - Nita G. Forouhi
- MRC Epidemiology Unit, University of Cambridge School of Clinical Medicine, Institute of Metabolic Science, Cambridge Biomedical Campus Cambridge, CB2 0QQ Cambridge, UK
| | - M. Arfan Ikram
- grid.5645.2000000040459992XDepartment of Epidemiology, Erasmus MC, University Medical Center, Wytemaweg 80, 3015 GE Rotterdam, The Netherlands
| | - Andre G. Uitterlinden
- grid.5645.2000000040459992XDepartment of Internal Medicine, Erasmus MC University Medical Center, Wytemaweg 80, 3015 GE Rotterdam, The Netherlands
| | - Jana V. van Vliet-Ostaptchouk
- grid.4494.d0000 0000 9558 4598Department of Endocrinology, University of Groningen, University Medical Center Groningen, Hanzeplein 1, 9713 GZ Groningen, The Netherlands ,grid.4494.d0000 0000 9558 4598Genomics Coordination Center, Department of Genetics, University of Groningen, University Medical Center, Groningen, Hanzeplein 1, 9713 GZ Groningen, The Netherlands
| | - Nick J. Wareham
- MRC Epidemiology Unit, University of Cambridge School of Clinical Medicine, Institute of Metabolic Science, Cambridge Biomedical Campus Cambridge, CB2 0QQ Cambridge, UK
| | - David Cesarini
- grid.137628.90000 0004 1936 8753Department of Economics, New York University, 19 W. 4th Street, New York, NY 10012 USA
| | - K. Paige Harden
- grid.89336.370000 0004 1936 9924Department of Psychology, University of Texas at Austin, 108 E. Dean Keeton Stop #A8000, Austin, TX 78704 USA
| | - James J. Lee
- grid.17635.360000000419368657Department of Psychology, University of Minnesota Twin Cities, 75 East River Parkway, Minneapolis, MN 55455 USA
| | - Daniel J. Benjamin
- grid.42505.360000 0001 2156 6853Behavioral and Health Genomics Center, Center for Economic and Social Research, University of Southern, California, 635 Downey Way, Los Angeles, CA 90089 USA ,grid.250279.b0000 0001 0940 3170National Bureau of Economic Research, 1050 Massachusetts Ave, Cambridge, MA 02138 USA ,grid.42505.360000 0001 2156 6853Department of Economics, University of Southern California, 635 Downey Way, Los Angeles, CA 90089 USA
| | - Carson C. Chow
- grid.94365.3d0000 0001 2297 5165Laboratory of Biological Modeling, National Institute of Diabetes and Digestive and Kidney Diseases, National, Institutes of Health, Bethesda, MD 20892 USA
| | - Philipp D. Koellinger
- grid.12380.380000 0004 1754 9227Department of Economics, Vrije Universiteit Amsterdam, De Boelelaan 1105, 1081 HV Amsterdam, The Netherlands
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12
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Thermodynamic assessment of allocation of energy and exergy of the nutrients for the life processes during pregnancy. Br J Nutr 2020; 124:742-753. [PMID: 32381134 DOI: 10.1017/s0007114520001646] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Thermodynamic analyses are performed to quantify allocation of the nutritional energy and exergy to most of the life processes by pregnant mice. In these analyses, 'internal work performance' is calculated for the first time in the literature for metabolism during pregnancy and found substantially higher than the 'external work performance'. Variation of the daily entropy generation rates and the daily internal work performance rates during the course of pregnancy showed a highly similar phasic behaviour. With the progression of the pregnancy, external work performance decreased and second law efficiency increased significantly. On the 13th day of pregnancy, net energy extracted from the food at the cellular energy metabolism subsystem was 15·0 kJ; approximately 3 kJ of it was employed for daily internal work performance, 0·8 kJ was allocated to daily external work performance and 0·8 kJ was stored in the adipose tissue without entering into the cellular energy metabolism subsystem. Heat generation in association with internal and external work performance was 9·1 and 2·2 kJ, respectively. Energy, pertinent to the first law, and exergy (useful energy), pertinent to the second law, balances are described graphically, and comparison of these plots showed that the total exergy of the nutrients allocated to internal and external work performance and heat generation is substantially smaller in magnitude when compared with those of energy balance.
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13
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Minderis P, Fokin A, Dirmontas M, Ratkevicius A. Hypocaloric Low-Carbohydrate and Low-Fat Diets with Fixed Protein Lead to Similar Health Outcomes in Obese Mice. Obesity (Silver Spring) 2020; 28:1494-1502. [PMID: 32639096 DOI: 10.1002/oby.22872] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/19/2020] [Revised: 04/21/2020] [Accepted: 04/24/2020] [Indexed: 12/21/2022]
Abstract
OBJECTIVE It is controversial whether low-carbohydrate diets are better suited for weight control and metabolic health than high-carbohydrate diets. This study examined whether these diets induce different improvements in body composition and glucose tolerance in obese mice during caloric restriction (CR). METHODS Male C57BL/6J mice were fed an obesogenic diet ad libitum for 18 weeks and then subjected to 6-week progressive CR of up to 40%, using either a low-fat or low-carbohydrate diet with equal protein content. Mice fed a regular chow diet ad libitum served as controls. Body mass, hindlimb muscle mass, fat mass, energy expenditure, and glucose tolerance were compared between the groups. RESULTS Initially low-fat and low-carbohydrate groups had similar body mass, which was 30% greater compared with controls. CR induced similar weight loss in low-fat and low-carbohydrate groups. This weight loss was mainly due to fat loss in both groups. Energy expenditure of freely moving mice did not differ between the groups. Glucose tolerance improved compared with the values before CR and in controls but did not differ between the diets. CONCLUSIONS Dietary carbohydrate or fat content does not affect improvements in body composition and metabolic health in obese mice exposed to CR with fixed energy and protein intake.
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Affiliation(s)
- Petras Minderis
- Institute of Sport Science and Innovations, Lithuanian Sports University, Kaunas, Lithuania
| | - Andrej Fokin
- Institute of Sport Science and Innovations, Lithuanian Sports University, Kaunas, Lithuania
| | - Mantas Dirmontas
- Institute of Sport Science and Innovations, Lithuanian Sports University, Kaunas, Lithuania
| | - Aivaras Ratkevicius
- Institute of Sport Science and Innovations, Lithuanian Sports University, Kaunas, Lithuania
- Department of Health Promotion and Rehabilitation, Lithuanian Sports University, Kaunas, Lithuania
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14
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Agaricus bisporus By-Products as a Source of Chitin-Glucan Complex Enriched Dietary Fibre with Potential Bioactivity. APPLIED SCIENCES-BASEL 2020. [DOI: 10.3390/app10072232] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Mushroom production generates large amounts of by-products whose disposal creates environmental problems. The high abundance of biological active non-starch polysaccharides in mushroom cell walls makes these by-products attractive for dietary fiber-based ingredient (DFI) production. Traditional methods of dietary fiber preparation didn’t allow to obtain a DFI with suitable chemical and functional properties. In this work a simple and environmentally friendly method was developed and optimized for DFI production using a central composite design with treatment time, hydrogen peroxide and sodium hydroxide concentration as factors and chemical composition, chromatic and functional properties as dependent variables. The chemical composition of the DFI was strongly influenced by the process parameters and its functional and color properties were dependent on its fiber and protein content, respectively. The method developed is simple, uses food grade and low-cost reagents and procedures yielding a DFI with white color, no odor and a high concentration of dietary fiber (>60%) with an identical sugar composition to the original mushroom fiber. Due to the high water and oil retention capacity, this DFI may be used not only for dietary fiber enrichment and reduction of the food energy value but also as a functional ingredient with potential bioactivity.
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15
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Obesity and adiposity: the culprit of dietary protein efficacy. Clin Sci (Lond) 2020; 134:389-401. [DOI: 10.1042/cs20190583] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2019] [Revised: 01/24/2020] [Accepted: 02/10/2020] [Indexed: 12/14/2022]
Abstract
AbstractObesity and increased body adiposity have been alarmingly increasing over the past decades and have been linked to a rise in food intake. Many dietary restrictive approaches aiming at reducing weight have resulted in contradictory results. Additionally, some policies to reduce sugar or fat intake were not able to decrease the surge of obesity. This suggests that food intake is controlled by a physiological mechanism and that any behavioural change only leads to a short-term success. Several hypotheses have been postulated, and many of them have been rejected due to some limitations and exceptions. The present review aims at presenting a new theory behind the regulation of energy intake, therefore providing an eye-opening field for energy balance and a potential strategy for obesity management.
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16
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Friedman MI, Appel S. Energy expenditure and body composition changes after an isocaloric ketogenic diet in overweight and obese men: A secondary analysis of energy expenditure and physical activity. PLoS One 2019; 14:e0222971. [PMID: 31815933 PMCID: PMC6901216 DOI: 10.1371/journal.pone.0222971] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2018] [Accepted: 09/09/2019] [Indexed: 12/30/2022] Open
Abstract
BACKGROUND A previously published pilot study assessed energy expenditure (EE) of participants with overweight and obesity after they were switched from a baseline high-carbohydrate diet (BD) to an isocaloric low-carbohydrate ketogenic diet (KD). EE measured using metabolic chambers increased transiently by what was considered a relatively small extent after the switch to the KD, whereas EE measured using doubly labeled water (EEDLW) increased to a greater degree after the response in the chambers had waned. Using a publicly available dataset, we examined the effect of housing conditions on the magnitude of the increase in EEDLW after the switch to the KD and the role of physical activity in that response. METHODS The 14-day EEDLW measurement period included 4 days when subjects were confined to chambers instead of living in wards. To determine the effect on EEDLW only for the days subjects were living in the wards, we calculated non-chamber EE (EEnonchamber). To assess the role of physical activity in the response to the KD, we analyzed chamber and non-chamber accelerometer data for the BD and KD EEDLW measurement periods. RESULTS In comparison with the increase in average 14-day EEDLW of 151 kcal/d ± 63 (P = 0.03) after the switch to the KD, EEnonchamber increased by 203 ± 89 kcal/d (P = 0.04) or 283 ± 116 kcal/d (P = 0.03) depending on the analytical approach. Hip accelerometer counts decreased significantly (P = 0.01) after the switch to the KD, whereas wrist and ankle accelerometer counts did not change. CONCLUSIONS Switching from the BD to the KD substantially increased EEDLW, but apparently only on days subjects were living in the ward outside the metabolic chamber. Increased physical activity as measured by accelerometry did not appear to account for this effect.
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Affiliation(s)
- Mark I. Friedman
- Nutrition Science Initiative, San Diego, California, United States of America
| | - Scott Appel
- Center for Clinical Epidemiology and Biostatistics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, United States of America
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17
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The Compositional and Functional Attributes of Commercial Flours from Tropical Fruits (Breadfruit and Banana). Foods 2019; 8:foods8110586. [PMID: 31752301 PMCID: PMC6915601 DOI: 10.3390/foods8110586] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2019] [Revised: 11/12/2019] [Accepted: 11/15/2019] [Indexed: 11/19/2022] Open
Abstract
The objective of this study was to compare the compositional and functional properties of tropical flour sources (two breadfruit flours (type A and type B) and a banana flour) with a more traditional flour source (wheat flour). Macro-nutrient composition, pH, water and oil holding capacity, bulk density, particle size, solubility, swelling power, pasting properties, and thermodynamics (gelatinization and retrogradation) were determined. All flours evaluated were similar in their composition with high levels of carbohydrates (greater than 82.52 g/100 g on a dry-matter basis), with most of the carbohydrate content comprised of starch (greater than 67.02 g/100 g). The tropical fruit flours had greater (p < 0.05) water holding capacity than wheat flour. Breadfruit flour B had the lowest (p < 0.05) bulk density, while banana flour had the greatest (p < 0.05) bulk density. The swelling power of the tropical flours was greater (p < 0.05) than the wheat flour. The viscosity of the tropical flours was higher than wheat flour but decreased significantly when temperature was held at 130 °C. These results indicated that the two breadfruit flours and banana flour have great potential for application in processed food products, and have similar compositional attributes to a more traditional flour.
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18
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Hall KD, Guo J, Chen KY, Leibel RL, Reitman ML, Rosenbaum M, Smith SR, Ravussin E. Reply to DS Ludwig et al. Am J Clin Nutr 2019; 110:1255-1256. [PMID: 31667517 PMCID: PMC7307317 DOI: 10.1093/ajcn/nqz157] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Affiliation(s)
- Kevin D Hall
- From the National Institute of Diabetes and Digestive and Kidney Diseases, Bethesda, MD,Address correspondence to KDH, e-mail:
| | - Juen Guo
- From the National Institute of Diabetes and Digestive and Kidney Diseases, Bethesda, MD
| | - Kong Y Chen
- From the National Institute of Diabetes and Digestive and Kidney Diseases, Bethesda, MD
| | | | - Marc L Reitman
- From the National Institute of Diabetes and Digestive and Kidney Diseases, Bethesda, MD
| | | | - Steven R Smith
- The Translational Research Institute for Metabolism and Diabetes, Baton Rouge, LA
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19
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Garcia MV, Milani MS, Ries EF. Production optimization of passion fruit peel flour and its incorporation into dietary food. FOOD SCI TECHNOL INT 2019; 26:132-139. [DOI: 10.1177/1082013219870011] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
This study aimed to obtain passion fruit peel flour and incorporate it as an ingredient in the development of dietary cookies. Drying proceeded by an experimental design with variable temperature and time and storage trial of the obtained flour was conducted in plastic packaging under optimized conditions (90 ℃/11 h) for 90 days. The passion fruit peel flour was incorporated into cookies at three levels (10, 20, and 30%) to replace wheat flour. Chemical composition, microbiological quality, and acceptance of sensory attributes of the cookies were determined. The formulations tested had significantly higher mean contents of ash and crude fiber (p < 0.05) and showed adjusted microbiological standards. Acceptance of the appearance, aroma, and flavor attributes were similar (p > 0.05) in all formulations. The results show the viability of optimized production of alternative flour (30% of passion fruit peel flour) from agro-industrial waste and the potential of the flour as an ingredient for the nutritional enrichment of dietary foods.
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Affiliation(s)
- Marcelo V Garcia
- Department of Food Technology and Science, Federal University of Santa Maria (UFSM), Santa Maria, Brazil
| | - Mayara S Milani
- Federal University of Santa Maria (UFSM), Frederico Westphalen, Brazil
| | - Edi F Ries
- Department of Collective Health, Federal University of Santa Maria (UFSM), Santa Maria, Brazil
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20
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A Hazelnut-Enriched Diet Modulates Oxidative Stress and Inflammation Gene Expression without Weight Gain. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2019; 2019:4683723. [PMID: 31354906 PMCID: PMC6637671 DOI: 10.1155/2019/4683723] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/17/2018] [Revised: 02/11/2019] [Accepted: 05/02/2019] [Indexed: 12/18/2022]
Abstract
Introduction Inflammation is associated with obesity condition and plays a pivotal role in the onset and progression of many chronic diseases. Among several nutraceutical foods, hazelnuts (Corylus avellana L.) are considered an excellent anti-inflammatory and hypolipidemic food being the second richest source of monounsaturated fatty acids among nuts and because they are rich in vitamins, minerals, and phenolic compounds. Materials and Methods A prospective pilot clinical trial on 24 healthy volunteers who consumed daily, as a snack, 40 g of hazelnuts (261.99 kcal/1096.17 kJ) for six weeks was conducted. Anthropometric measurements, body composition analysis, and nutrigenomic analysis on 12 anti-inflammatory and antioxidant genes were evaluated at baseline (T0) and after hazelnut intervention (T1). Results No significant changes were detected on body composition analysis after hazelnut consumption. Conversely, significant upregulation was detected for SOD1 (2−ΔΔCt = 2.42), CAT (2−ΔΔCt = 2.41), MIF (2−ΔΔCt = 4.12), PPARγ (2−ΔΔCt = 5.89), VDR (2−ΔΔCt = 3.61), MTHFR (2−ΔΔCt = 2.40), and ACE (2−ΔΔCt = 2.16) at the end of the study. Conclusions According to emerging evidences, hazelnut consumption does not lead to weight gain probably due to the improvement of the body's antioxidant capacity by the upregulation of genes implied in oxidant reactions and inflammation.
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21
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Huang S, Vasquez Mejía SM, Murch SJ, Bohrer BM. Cooking loss, texture properties, and color of comminuted beef prepared with breadfruit (Artocarpus altilis) flour. MEAT AND MUSCLE BIOLOGY 2019. [DOI: 10.22175/mmb2018.11.0039] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
Abstract
Cooking loss, texture properties, and color of comminuted beef when prepared with breadfruit (Artocarpus altilis) flour or other flour sources was evaluated using 2 separate studies. Flour sources tested in these studies (against a negative control with no added flour) were breadfruit flour, soy flour, corn flour, wheat flour, and tapioca flour. Study 1: Finely minced, comminuted beef batters (extra lean beef targeted to 97% lean and 3% fat, salt, and ice/water) prepared with inclusion levels of 0, 1, 2, 3, 4, and 5% flour were evaluated for cooking loss and texture. Cooking loss was reduced (P < 0.05) in comminuted beef prepared with breadfruit flour compared with those not prepared with flour and cooking loss decreased as breadfruit flour inclusion level increased (Linear P < 0.01). Hardness was not different (P = 0.49) in comminuted beef prepared with breadfruit flour compared with soy flour, and was much less (P < 0.01) compared with the 3 other flour sources at each inclusion level. Study 2: Comminuted beef (lean beef targeted to 90% lean and 10% fat, salt, and ice/water) with inclusion levels of 0, 2.5, and 5% flour were formed into patties and were evaluated for color over a simulated retail display period. Redness values (a*) of comminuted beef prepared with breadfruit flour were the greatest (P < 0.05) during the 7-d simulated retail display compared with all other treatments, including control samples with no flour. Overall, the results indicated that breadfruit flour could be effectively used as an ingredient in comminuted beef to produce similar texture as observed with soy flour, while actually improving redness values beyond that of other flour sources.
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Affiliation(s)
- Shiqi Huang
- University of Guelph Department of Food Science
| | | | - Susan J. Murch
- University of British Columbia Okanagan Department of Chemistry
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22
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Affiliation(s)
- Dan S. Tawfik
- Department of Biomolecular SciencesWeizmann Institute of Science Rehovot 76100 Israel
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23
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Madsen L, Myrmel LS, Fjære E, Øyen J, Kristiansen K. Dietary Proteins, Brown Fat, and Adiposity. Front Physiol 2018; 9:1792. [PMID: 30631281 PMCID: PMC6315128 DOI: 10.3389/fphys.2018.01792] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2018] [Accepted: 11/28/2018] [Indexed: 12/15/2022] Open
Abstract
High protein diets have become popular for body weight maintenance and weight loss despite controversies regarding efficacy and safety. Although both weight gain and weight loss are determined by energy consumption and expenditure, data from rodent trials consistently demonstrate that the protein:carbohydrate ratio in high fat diets strongly influences body and fat mass gain per calorie eaten. Here, we review data from rodent trials examining how high protein diets may modulate energy metabolism and the mechanisms by which energy may be dissipated. We discuss the possible role of activating brown and so-called beige/BRITE adipocytes including non-canonical UCP1-independent thermogenesis and futile cycles, where two opposing metabolic pathways are operating simultaneously. We further review data on how the gut microbiota may affect energy expenditure. Results from human and rodent trials demonstrate that human trials are less consistent than rodent trials, where casein is used almost exclusively as the protein source. The lack of consistency in results from human trials may relate to the specific design of human trials, the possible distinct impact of different protein sources, and/or the differences in the efficiency of high protein diets to attenuate obesity development in lean subjects vs. promoting weight loss in obese subjects.
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Affiliation(s)
- Lise Madsen
- Institute of Marine Research, Bergen, Norway.,Laboratory of Genomics and Molecular Biomedicine, Department of Biology, University of Copenhagen, Copenhagen, Denmark
| | | | - Even Fjære
- Institute of Marine Research, Bergen, Norway
| | | | - Karsten Kristiansen
- Laboratory of Genomics and Molecular Biomedicine, Department of Biology, University of Copenhagen, Copenhagen, Denmark
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24
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Erchinger F, Øvre AKN, Aarseth MM, Engjom T, Brønstad I, Dimcevski G, Gudbrandsen OA, Tjora E. Fecal fat and energy loss in pancreas exocrine insufficiency: the role of pancreas enzyme replacement therapy. Scand J Gastroenterol 2018; 53:1132-1138. [PMID: 30193081 DOI: 10.1080/00365521.2018.1499801] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
BACKGROUND Chronic pancreatitis (CP) can lead to severe pancreatic exocrine insufficiency (PEI). Pancreatic enzyme replacement therapy (PERT) is well established, but knowledge of the physiological response to increasing doses on fecal fat- and energy loss is scarce. METHODS We included 10 patients with CP and established PEI and 12 healthy controls for a prospective interventional study. Subjects received no PERT in the first week followed by four weeks PERT incrementally increasing doses every week. For each week, three-day stool collection followed three days registration of nutritional intake. We measured the fecal output of fat and energy by van de Kamer titration and decomposition vessel calorimetry, respectively. We calculated fecal fat- and energy loss per day, the coefficient of fat absorption (CFA) and coefficient of energy absorption (CEA). RESULTS Without PERT treatment, CP patients with PEI had significantly higher daily fecal fat and energy loss (p = .022; p = .035) compared to HC. In CP patients, there was a significant reduction of fecal fat and energy loss (p = .045; p = .037) when PERT doses reached maximum intake of 75,000 units per meal. In CP patients, there was a strong positive correlation between fecal loss of energy and fat (r = 0.99), and between fecal loss of energy and daily stool weight (r = 0.97). CFA and CEA correlated negatively with daily fecal fat loss (r = -0.72) and fecal energy loss (r = -0.65). CONCLUSIONS PERT reduces fecal energy and fat loss in patients with CP and PEI. Fecal energy loss in CP patients is strongly dependent on fecal fat loss, and on fecal weight.
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Affiliation(s)
- Friedemann Erchinger
- a Department of Medicine , Voss Hospital, Haukeland University Hospital , Voss , Norway.,b Department of Clinical Medicine , University of Bergen , Bergen , Norway
| | | | | | - Trond Engjom
- b Department of Clinical Medicine , University of Bergen , Bergen , Norway.,c Department of Medicine , Haukeland University Hospital , Bergen , Norway
| | - Ingeborg Brønstad
- b Department of Clinical Medicine , University of Bergen , Bergen , Norway.,d National Centre for Ultrasound in Gastroenterology , Haukeland University Hospital , Bergen , Norway
| | - Georg Dimcevski
- b Department of Clinical Medicine , University of Bergen , Bergen , Norway.,c Department of Medicine , Haukeland University Hospital , Bergen , Norway.,d National Centre for Ultrasound in Gastroenterology , Haukeland University Hospital , Bergen , Norway
| | | | - Erling Tjora
- e Department of Pediatrics , Haukeland University Hospital , Bergen , Norway.,f KG Jebsen center for Diabetes Research, Department of Clinical Science , University of Bergen , Bergen , Norway
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Rosenbaum M, Agurs-Collins T, Bray MS, Hall KD, Hopkins M, Laughlin M, MacLean PS, Maruvada P, Savage CR, Small DM, Stoeckel L. Accumulating Data to Optimally Predict Obesity Treatment (ADOPT): Recommendations from the Biological Domain. Obesity (Silver Spring) 2018; 26 Suppl 2:S25-S34. [PMID: 29575784 PMCID: PMC6945498 DOI: 10.1002/oby.22156] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/17/2018] [Revised: 02/12/2018] [Accepted: 02/12/2018] [Indexed: 01/01/2023]
Abstract
BACKGROUND The responses to behavioral, pharmacological, or surgical obesity treatments are highly individualized. The Accumulating Data to Optimally Predict obesity Treatment (ADOPT) project provides a framework for how obesity researchers, working collectively, can generate the evidence base needed to guide the development of tailored, and potentially more effective, strategies for obesity treatment. OBJECTIVES The objective of the ADOPT biological domain subgroup is to create a list of high-priority biological measures for weight-loss studies that will advance the understanding of individual variability in response to adult obesity treatments. This list includes measures of body composition, energy homeostasis (energy intake and output), brain structure and function, and biomarkers, as well as biobanking procedures, which could feasibly be included in most, if not all, studies of obesity treatment. The recommended high-priority measures are selected to balance needs for sensitivity, specificity, and/or comprehensiveness with feasibility to achieve a commonality of usage and increase the breadth and impact of obesity research. SIGNIFICANCE The accumulation of data on key biological factors, along with behavioral, psychosocial, and environmental factors, can generate a more precise description of the interplay and synergy among them and their impact on treatment responses, which can ultimately inform the design and delivery of effective, tailored obesity treatments.
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Affiliation(s)
- Michael Rosenbaum
- Columbia University, Vagelos College of Physicians & Surgeons, New York, New York, USA
| | - Tanya Agurs-Collins
- National Cancer Institute, National Institutes of Health, Rockville, Maryland, USA
| | - Molly S Bray
- Department of Nutritional Sciences, University of Texas at Austin, Austin, Texas, USA
| | - Kevin D Hall
- National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland, USA
| | - Mark Hopkins
- School of Food Science and Nutrition, University of Leeds, Leeds, England
| | - Maren Laughlin
- National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland, USA
| | - Paul S MacLean
- School of Medicine, University of Colorado School of Medicine, Aurora, Colorado, USA
| | - Padma Maruvada
- School of Medicine, University of Colorado School of Medicine, Aurora, Colorado, USA
| | - Cary R Savage
- Center for Brain, Biology and Behavior, Department of Psychology, University of Nebraska, Lincoln, Nebraska, USA
| | - Dana M Small
- Yale University Medical School, New Haven, Connecticut, USA
| | - Luke Stoeckel
- National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland, USA
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Howell S, Kones R. "Calories in, calories out" and macronutrient intake: the hope, hype, and science of calories. Am J Physiol Endocrinol Metab 2017; 313:E608-E612. [PMID: 28765272 DOI: 10.1152/ajpendo.00156.2017] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/15/2017] [Revised: 07/11/2017] [Accepted: 07/26/2017] [Indexed: 01/05/2023]
Abstract
One of the central tenets in obesity prevention and management is caloric restriction. This perspective presents salient features of how calories and energy balance matter, also called the "calories in, calories out" paradigm. Determinants of energy balance and relationships to dietary macronutrient content are reviewed. The rationale and features of the carbohydrate-insulin hypothesis postulate that carbohydrate restriction confers a metabolic advantage. According to this model, a large amount of fat intake is enabled without weight gain. Evidence concerning this possibility is detailed. The relationship and application of the laws of thermodynamics are then clarified with current primary research. Strong data indicate that energy balance is not materially changed during isocaloric substitution of dietary fats for carbohydrates. Results from a number of sources refute both the theory and effectiveness of the carbohydrate-insulin hypothesis. Instead, risk for obesity is primarily determined by total calorie intake.
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Affiliation(s)
- Scott Howell
- Tudor Bompa Institute, Kingsport, Tennessee; and
| | - Richard Kones
- The Cardiometabolic Research Institute, Houston, Texas
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27
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Sun FH, Si GY. Effect of carbohydrate and protein solutions consumed during a moderate-intensity exercise on post-exercise appetite. Physiol Behav 2017; 179:510-515. [PMID: 28778550 DOI: 10.1016/j.physbeh.2017.07.030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2016] [Revised: 06/07/2017] [Accepted: 07/29/2017] [Indexed: 10/19/2022]
Abstract
This study aimed to investigate whether co-ingestion of carbohydrate and protein during exercise affect the post-exercise ad libitum food intake. Twelve healthy active male participants (mean±SD, age: 20±1; height: 176±6cm; weight: 63.6±5.3kg; VO2peak: 51.2±7.1ml/kg/min) completed three main experimental trials in a randomized cross-over design. In each trial, the participants completed 1h of ergometer cycling at 60% VO2peak, followed by 2h recovery. The participants were required to consume one of three solutions every 15min during exercise: distilled water (DW), carbohydrate-electrolyte solution (CE), and carbohydrate-electrolyte-protein solution (CEP). The energy was matched between the two latter solutions. The CHO-to-protein ratio in CEP was 2:1. At the end of recovery period, participants were provided with pizza lunch ad libitum, and the amount consumed was recorded. Several subjective feelings, appetite scores and blood glucose were determined during the experimental trials. No differences were found in either the amount of consumed pizza (DW vs. CE vs. CEP: 607±128 vs. 592±119 vs. 599±125g, P=0.845) or the appetite score before pizza was consumed (DW vs. CE vs. CEP: 14±9 vs. 12±14 vs. 14±10, P=0.357) among the three trials. The blood glucose concentrations during exercise were higher in the CE and CEP trials than in the DW trial. In conclusion, different solutions consumed during a 1h moderate-intensity exercise in the present study did not affect post-exercise appetite.
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Affiliation(s)
- Feng-Hua Sun
- Department of Health and Physical Education, The Education University of Hong Kong, Hong Kong, China.
| | - Gang-Yan Si
- Department of Health and Physical Education, The Education University of Hong Kong, Hong Kong, China
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Jensen K, Shearman M, Rapkin J, Carey MR, House CM, Hunt J. Change in sex pheromone expression by nutritional shift in male cockroaches. Behav Ecol 2017. [DOI: 10.1093/beheco/arx120] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
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Trabelsi K, Stannard SR, Chtourou H, Moalla W, Ghozzi H, Jamoussi K, Hakim A. Monitoring athletes’ hydration status and sleep patterns during Ramadan observance: methodological and practical considerations. BIOL RHYTHM RES 2017. [DOI: 10.1080/09291016.2017.1368214] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Khaled Trabelsi
- Laboratory of Pharmacology, Faculty of Medicine, University of Sfax, Sfax, Tunisia
| | - Stephen R. Stannard
- School of Sport and Exercise, Massey University, Palmerston North, New Zealand
| | - Hamdi Chtourou
- UR15JS01: Education, Motricity, Sport and Health, High Institute of Sport and Physical Education, University of Sfax, Sfax, Tunisia
| | - Wacim Moalla
- UR15JS01: Education, Motricity, Sport and Health, High Institute of Sport and Physical Education, University of Sfax, Sfax, Tunisia
| | - Hanène Ghozzi
- Laboratory of Pharmacology, Faculty of Medicine, University of Sfax, Sfax, Tunisia
| | - Kamel Jamoussi
- Department of Biochemistry, Hedi Chaker University Hospital, Sfax, Tunisia
| | - Ahmed Hakim
- Laboratory of Pharmacology, Faculty of Medicine, University of Sfax, Sfax, Tunisia
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Parussolo G, Busatto RT, Schmitt J, Pauletto R, Schons PF, Ries EF. Synbiotic ice cream containing yacon flour and Lactobacillus acidophylus NCFM. Lebensm Wiss Technol 2017. [DOI: 10.1016/j.lwt.2017.04.049] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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31
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Mullie P, Autier P, Boniol M, Boyle P, Deforche B, Mertens E, Charlier R, Knaeps S, Lefevre J, Clarys P. Assessment of sugar-sweetened beverage consumption and weight change: a prospective cohort study. BMC Nutr 2017; 3:57. [PMID: 32153837 PMCID: PMC7050833 DOI: 10.1186/s40795-017-0182-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2017] [Accepted: 07/06/2017] [Indexed: 11/16/2022] Open
Abstract
Background In prospective studies, sugar-sweetened beverages (SSB) have been associated with weight increase. However, most prospective studies examine changes in body weight over time according to amounts of SSB intake at baseline, generally without considering changes over time in SSB, energy intake and physical activity. The objective of the present study was to examine how SSB intakes influence changes in weight, according to the way SSB intakes are analysed. Methods For a prospective cohort study with two nutritional assessments in time, 46 Flemish municipalities were selected by clustered random sampling. Within these municipalities, a random sample of men and women between 18 and 75 years of age was selected and invited to participate. In total, 562 middle-aged Belgian adults were tested in 2002 and 2012 for the same anthropometric, lifestyle, nutrition and physical activity parameters. The main outcome measured were weight changes from 2002 to 2012 were analysed according to various ways to parametrise SSB intakes in 2002 and changes in SSB, energy intake, and physical activity from 2002 to 2012. Results In a multivariable model including age, sex, the best predictors of weight changes were the weight at baseline (P < 0.001), then the change in energy intake (p = 0.068). No association was found with SSB intake at baseline (P = 0.267) and the change in SSB intake (P = 0.130). Conclusions Results of prospective studies on SSB intake and body weight depend much on the way SSB intakes are analysed, and on the inclusion of changes in energy intake and physical activity in analyses.
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Affiliation(s)
- Patrick Mullie
- 1International Prevention Research Institute, 95 Cours Lafayette, 69006 Lyon, France.,2Department of Human Biometrics and Biomechanics, Faculty of Physical Education and Physiotherapy, Vrije Universiteit Brussel, Pleinlaan 2, 1050 Brussels, Belgium.,3Erasmus University College, Laarbeeklaan 121, 1120 Brussels, Belgium
| | - Philippe Autier
- 1International Prevention Research Institute, 95 Cours Lafayette, 69006 Lyon, France.,4International Prevention Research Institute, University of Strathclyde Institute of Global Public Health at iPRI, 95 Cours Lafayette, 69006 Lyon, France
| | - Mathieu Boniol
- 1International Prevention Research Institute, 95 Cours Lafayette, 69006 Lyon, France.,4International Prevention Research Institute, University of Strathclyde Institute of Global Public Health at iPRI, 95 Cours Lafayette, 69006 Lyon, France
| | - Peter Boyle
- 1International Prevention Research Institute, 95 Cours Lafayette, 69006 Lyon, France.,4International Prevention Research Institute, University of Strathclyde Institute of Global Public Health at iPRI, 95 Cours Lafayette, 69006 Lyon, France
| | - Benedicte Deforche
- 2Department of Human Biometrics and Biomechanics, Faculty of Physical Education and Physiotherapy, Vrije Universiteit Brussel, Pleinlaan 2, 1050 Brussels, Belgium.,5Department of Public Health, Faculty of Medicine and Health Sciences, Ghent University, De Pintelaan 185, 9000 Ghent, Belgium
| | - Evelien Mertens
- 2Department of Human Biometrics and Biomechanics, Faculty of Physical Education and Physiotherapy, Vrije Universiteit Brussel, Pleinlaan 2, 1050 Brussels, Belgium.,6Department of Kinesiology, KU Leuven, Faculty of Kinesiology and Rehabilitation Sciences, Tervuursevest 101, 3001 Leuven, Belgium
| | - Ruben Charlier
- 6Department of Kinesiology, KU Leuven, Faculty of Kinesiology and Rehabilitation Sciences, Tervuursevest 101, 3001 Leuven, Belgium
| | - Sara Knaeps
- 6Department of Kinesiology, KU Leuven, Faculty of Kinesiology and Rehabilitation Sciences, Tervuursevest 101, 3001 Leuven, Belgium.,7Department of Movement and Sports Sciences, Ghent University, Watersportlaan 2, 9000 Ghent, Belgium
| | - Johan Lefevre
- 6Department of Kinesiology, KU Leuven, Faculty of Kinesiology and Rehabilitation Sciences, Tervuursevest 101, 3001 Leuven, Belgium
| | - Peter Clarys
- 2Department of Human Biometrics and Biomechanics, Faculty of Physical Education and Physiotherapy, Vrije Universiteit Brussel, Pleinlaan 2, 1050 Brussels, Belgium.,3Erasmus University College, Laarbeeklaan 121, 1120 Brussels, Belgium
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Casperson SL, Hall C, Roemmich JN. Postprandial energy metabolism and substrate oxidation in response to the inclusion of a sugar- or non-nutritive sweetened beverage with meals differing in protein content. BMC Nutr 2017; 3:49. [PMID: 32153829 PMCID: PMC7050861 DOI: 10.1186/s40795-017-0170-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2016] [Accepted: 06/12/2017] [Indexed: 01/16/2023] Open
Abstract
Background The macronutrient composition of the diet may play a more important role in maintaining a healthy body weight and preventing obesity than previously thought. The primary goal of this research was to determine the extent to which the simple addition of a small serving of a sugar-sweetened beverage (SSB) to meals with different macronutrient compositions impacts appetite, energy metabolism and substrate oxidation. Methods Appetite, energy metabolism and substrate oxidation were measured in 27 healthy weight adults (age = 23 ± 5 y; BMI = 23 ± 2 kg/m2) on two occasions in a room calorimeter after consuming a SSB or a non-nutritive-sweetened beverage (NNSB) with a standard (15%E) or high- (30%E) protein meal. Meal carbohydrate (CHO) content was adjusted to maintain equivalent calories for both study visits. All meals were composed of the same foods and provided 17 g of fat and 500 non-beverage calories. Study visits were separated by at least 1 week and menstruating females were studied during the luteal phase (Days 15-20). The effects of sex, protein level and beverage type and their interactions on satiety, appetite for foods with specific taste profiles, diet-induced thermogenesis (DIT) and rates of substrate oxidation were assessed using a 3-way Repeated Measures Analysis of Variance. Results Increasing dietary protein decreased hunger and increased satiety. Males were hungrier and less satisfied with the meals than females. Increasing dietary protein also decreased the desire to eat something savory, salty and fatty and the males had a greater appetite for food with these taste profiles. Interestingly, there was no effect of sex, dietary protein or beverage type on the desire to eat something sweet. The inclusion of a SSB markedly suppressed DIT (2.42% ± 5.91%) and fat oxidation (9.87 ± 11.09 g). Conclusion Appetite sensations, food preferences, energy expenditure and substrate oxidation are significantly altered in response to changes in meal macronutrient composition produced by modifications in the protein content of a meal and consumption of a SSB. Most notably, consumption of a SSB during a meal markedly reduces energy efficiency and fat oxidation independent of macronutrient composition. Trial registrations ClinicalTrials.gov: NCT02211599, registered August 05, 2014.
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Affiliation(s)
- Shanon L Casperson
- USDA, Agricultural Research Service, Grand Forks Human Nutrition Research Center, 2420 2nd Ave. North, Grand Forks, ND 58203-9034 USA
| | - Clint Hall
- USDA, Agricultural Research Service, Grand Forks Human Nutrition Research Center, 2420 2nd Ave. North, Grand Forks, ND 58203-9034 USA
| | - James N Roemmich
- USDA, Agricultural Research Service, Grand Forks Human Nutrition Research Center, 2420 2nd Ave. North, Grand Forks, ND 58203-9034 USA
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Papageorgiou M, Dolan E, Elliott-Sale KJ, Sale C. Reduced energy availability: implications for bone health in physically active populations. Eur J Nutr 2017; 57:847-859. [PMID: 28721562 PMCID: PMC5861178 DOI: 10.1007/s00394-017-1498-8] [Citation(s) in RCA: 67] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2017] [Accepted: 07/03/2017] [Indexed: 01/17/2023]
Abstract
Purpose The present review critically evaluates existing literature on the effects of short- and long-term low energy availability (EA) on bone metabolism and health in physically active individuals. Methods We reviewed the literature on the short-term effects of low EA on markers of bone metabolism and the long-term effects of low EA on outcomes relating to bone health (bone mass, microarchitecture and strength, bone metabolic markers and stress fracture injury risk) in physically active individuals. Results Available evidence indicates that short-term low EA may increase markers of bone resorption and decrease markers of bone formation in physically active women. Bone metabolic marker responses to low EA are less well known in physically active men. Cross-sectional studies investigating the effects of long-term low EA suggest that physically active individuals who have low EA present with lower bone mass, altered bone metabolism (favouring bone resorption), reduced bone strength and increased risk for stress fracture injuries. Conclusions Reduced EA has a negative influence on bone in both the short- and long-term, and every effort should be made to reduce its occurrence in physically active individuals. Future interventions are needed to explore the effects of long-term reduced EA on bone health outcomes, while short-term low EA studies are also required to give insight into the pathophysiology of bone alterations.
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Affiliation(s)
- Maria Papageorgiou
- Musculoskeletal Physiology Research Group, Sport, Health and Performance Enhancement Research Centre, School of Science and Technology, Nottingham Trent University, Nottingham, NG11 8NS UK
| | - Eimear Dolan
- Applied Physiology and Nutrition Research Group, University of Sao Paulo, São Paulo, Brazil
| | - Kirsty J. Elliott-Sale
- Musculoskeletal Physiology Research Group, Sport, Health and Performance Enhancement Research Centre, School of Science and Technology, Nottingham Trent University, Nottingham, NG11 8NS UK
| | - Craig Sale
- Musculoskeletal Physiology Research Group, Sport, Health and Performance Enhancement Research Centre, School of Science and Technology, Nottingham Trent University, Nottingham, NG11 8NS UK
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Abstract
AbstractA better understanding of the factors that influence eating behaviour is of importance as our food choices are associated with the risk of developing chronic diseases such as obesity, CVD, type 2 diabetes or some forms of cancer. In addition, accumulating evidence suggests that the industrial food production system is a major contributor to greenhouse gas emission and may be unsustainable. Therefore, our food choices may also contribute to climate change. By identifying the factors that influence eating behaviour new interventions may be developed, at the individual or population level, to modify eating behaviour and contribute to society’s health and environmental goals. Research indicates that eating behaviour is dictated by a complex interaction between physiology, environment, psychology, culture, socio-economics and genetics that is not fully understood. While a growing body of research has identified how several single factors influence eating behaviour, a better understanding of how these factors interact is required to facilitate the developing new models of eating behaviour. Due to the diversity of influences on eating behaviour this would probably necessitate a greater focus on multi-disciplinary research. In the present review, the influence of several salient physiological and environmental factors (largely related to food characteristics) on meal initiation, satiation (meal size) and satiety (inter-meal interval) are briefly discussed. Due to the large literature this review is not exhaustive but illustrates the complexity of eating behaviour. The present review will also highlight several limitations that apply to eating behaviour research.
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Chtourou H, Chtourou L, Trabelsi K, Tahri N, Souissi N. Possible gastrointestinal disorders for athletes during Ramadan: an overview. BIOL RHYTHM RES 2017. [DOI: 10.1080/09291016.2017.1333196] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Hamdi Chtourou
- Research Unit: Education, Motricité, Sport et Santé, UR15JS01, High Institute of Sport and Physical Education of Sfax, University of Sfax, Tunisia
| | - Lassaad Chtourou
- Department of Gastroenterology and Hepatology, Hedi Chaker Hospital, Faculty of Medicine, University of Sfax, Tunisia
| | - Khaled Trabelsi
- Laboratory of Pharmacology, Faculty of Medicine, University of Sfax, Tunisia
| | - Nabil Tahri
- Department of Gastroenterology and Hepatology, Hedi Chaker Hospital, Faculty of Medicine, University of Sfax, Tunisia
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Karl JP, Meydani M, Barnett JB, Vanegas SM, Goldin B, Kane A, Rasmussen H, Saltzman E, Vangay P, Knights D, Chen CYO, Das SK, Jonnalagadda SS, Meydani SN, Roberts SB. Substituting whole grains for refined grains in a 6-wk randomized trial favorably affects energy-balance metrics in healthy men and postmenopausal women. Am J Clin Nutr 2017; 105:589-599. [PMID: 28179223 PMCID: PMC5320410 DOI: 10.3945/ajcn.116.139683] [Citation(s) in RCA: 62] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2016] [Accepted: 12/27/2016] [Indexed: 12/23/2022] Open
Abstract
Background: The effect of whole grains on the regulation of energy balance remains controversial.Objective: We aimed to determine the effects of substituting whole grains for refined grains, independent of body weight changes, on energy-metabolism metrics and glycemic control.Design: The study was a randomized, controlled, parallel-arm controlled-feeding trial that was conducted in 81 men and postmenopausal women [49 men and 32 women; age range: 40-65 y; body mass index (in kg/m2): <35.0]. After a 2-wk run-in period, participants were randomly assigned to consume 1 of 2 weight-maintenance diets for 6 wk. Diets differed in whole-grain and fiber contents [mean ± SDs: whole grain-rich diet: 207 ± 39 g whole grains plus 40 ± 5 g dietary fiber/d; refined grain-based diet: 0 g whole grains plus 21 ± 3 g dietary fiber/d] but were otherwise similar. Energy metabolism and body-composition metrics, appetite, markers of glycemic control, and gut microbiota were measured at 2 and 8 wk.Results: By design, body weight was maintained in both groups. Plasma alkylresorcinols, which are biomarkers of whole-grain intake, increased in the whole grain-rich diet group (WG) but not in the refined grain-based diet group (RG) (P-diet-by-time interaction < 0.0001). Beta ± SE changes (ΔWG compared with ΔRG) in the resting metabolic rate (RMR) (43 ± 25 kcal/d; P = 0.04), stool weight (76 ± 12 g/d; P < 0.0001), and stool energy content (57 ± 17 kcal/d; P = 0.003), but not in stool energy density, were higher in the WG. When combined, the favorable energetic effects in the WG translated into a 92-kcal/d (95% CI: 28, 156-kcal/d) higher net daily energy loss compared with that of the RG (P = 0.005). Prospective consumption (P = 0.07) and glycemia after an oral-glucose-tolerance test (P = 0.10) trended toward being lower in the WG than in the RG. When nonadherent participants were excluded, between-group differences in stool energy content and glucose tolerance increased, and between-group differences in the RMR and prospective consumption were not statistically significant.Conclusion: These findings suggest positive effects of whole grains on the RMR and stool energy excretion that favorably influence energy balance and may help explain epidemiologic associations between whole-grain consumption and reduced body weight and adiposity. This trial was registered at clinicaltrials.gov as NCT01902394.
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Affiliation(s)
- J Philip Karl
- Jean Mayer USDA Human Nutrition Research Center on Aging
| | - Mohsen Meydani
- Jean Mayer USDA Human Nutrition Research Center on Aging
| | | | | | - Barry Goldin
- School of Medicine, Tufts University, Boston, MA
| | - Anne Kane
- School of Medicine, Tufts University, Boston, MA
| | | | | | - Pajau Vangay
- Biomedical Informatics and Computational Biology
| | - Dan Knights
- Department of Computer Science and Engineering, University of Minnesota,
Minneapolis, MN
| | | | - Sai Krupa Das
- Jean Mayer USDA Human Nutrition Research Center on Aging
| | | | | | - Susan B Roberts
- Jean Mayer USDA Human Nutrition Research Center on Aging and
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Natesan H, Bischof JC. Multiscale Thermal Property Measurements for Biomedical Applications. ACS Biomater Sci Eng 2017; 3:2669-2691. [PMID: 33418696 DOI: 10.1021/acsbiomaterials.6b00565] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Bioheat transfer-based innovations in health care include applications such as focal treatments for cancer and cardiovascular disease and the preservation of tissues and organs for transplantation. In these applications, the ability to preserve or destroy a biomaterial is directly dependent on its temperature history. Thus, thermal measurement and modeling are necessary to either avoid or induce the injury required. In this review paper, we will first define and discuss thermal conductivity and calorimetric measurements of biomaterials in the cryogenic (<-40 °C), subzero (<0 °C), hypothermic (<37 °C), and hyperthermic (>37 °C) regimes. For thermal conductivity measurements, we review the use of 3ω and laser flash techniques for measurement of thermal conductivity in thin (1 μm-2 mm thick), anisotropic, and/or multilayered tissues. At the nanoscale, we review the use of pump-probe and scanning probe methods to measure thermal conductivity at short temporal scales (10 ps-100 ns) and spatial scales (1 nm-1 μm), particularly in the coating and surrounding medium around metallic nanoparticles (1 nm-20 nm). For calorimetric techniques, we review differential scanning calorimetry (DSC), which is intrinsically at the microscale (e.g., tissue pieces or millions of cells in media). DSC is used with large sample mass (∼3-100 mg) over wide temperature ranges (-180 to 750 °C) with low-temperature scanning rates (<750 °C/min). The need to assess smaller samples at higher rates has led to the development of nanocalorimetry on a silicon based membrane. Here the sample weight is as low as 10 ng, thereby allowing ultra-rapid heating rates (∼1 × 107 C/min). Finally, we discuss various opportunities that are driving the need for new micro- and nanoscale thermal measurements.
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Affiliation(s)
- Harishankar Natesan
- Department of Mechanical Engineering, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - John C Bischof
- Department of Mechanical Engineering, University of Minnesota, Minneapolis, Minnesota 55455, United States
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Skipper A, Tupesis N. Is There a Role for Nonprotein Calories in Developing and Evaluating the Nutrient Prescription? Nutr Clin Pract 2017; 20:321-4. [PMID: 16207670 DOI: 10.1177/0115426505020003321] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
The concept of nonprotein calories has been used in a variety of ways by nutrition support clinicians. Nonprotein calories may refer to the combined energy from lipid and carbohydrate but are also used to describe the balance between energy and protein in the form of the nonprotein calorie-to-nitrogen ratio. Nonprotein calories have been used as the basis for calculating nutrient needs, but this practice is no longer recommended as it may result in overfeeding. The purpose of this paper is to examine the nonprotein calorie concept using a clinical scenario and review of the literature.
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Abstract
Low-carbohydrate diets are based on an alternative theory of obesity where dietary carbohydrate, particularly unprocessed sugars, causes hyperinsulinemia, leading to insulin resistance, obesity, and cardiovascular disease. In this model, carbohydrate is viewed as a "metabolic poison" and therefore is limited in the diet. This article systematically reviews and refutes the 6 major physiologic claims made by proponents of low-carbohydrate diets. Any benefits or advantages resulting from these diets must therefore be derived from factors other than those stated by the alternative theory.
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Affiliation(s)
- Robert F Kushner
- Northwestern University Feinberg School of Medicine, Wellness Institute, Northwestern Memorial Hospital, Chicago, Illinois, USA.
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Xu JL, Riccioli C, Sun DW. Development of an alternative technique for rapid and accurate determination of fish caloric density based on hyperspectral imaging. J FOOD ENG 2016. [DOI: 10.1016/j.jfoodeng.2016.06.007] [Citation(s) in RCA: 62] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Cronise RJ, Sinclair DA, Bremer AA. Oxidative Priority, Meal Frequency, and the Energy Economy of Food and Activity: Implications for Longevity, Obesity, and Cardiometabolic Disease. Metab Syndr Relat Disord 2016; 15:6-17. [PMID: 27869525 PMCID: PMC5326984 DOI: 10.1089/met.2016.0108] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
In most modern societies, the relationship that many individuals have with food has fundamentally changed from previous generations. People have shifted away from viewing food as primarily sustenance, and rather now seek out foods based on pure palatability or specific nutrition. However, it is far from clear what optimal nutrition is for the general population or specific individuals. We previously described the Food Triangle as a way to organize food based on an increasing energy density paradigm, and now expand on this model to predict the impact of oxidative priority and both nutrient and fiber density in relation to caloric load. When combined with meal frequency, integrated energy expenditure, macronutrient oxidative priority, and fuel partitioning expressed by the respiratory quotient, our model also offers a novel explanation for chronic overnutrition and the cause of excess body fat accumulation. Herein, we not only review how metabolism is a dynamic process subject to many regulators that mediate the fate of ingested calories but also discuss how the Food Triangle predicts the oxidative priority of ingested foods and provides a conceptual paradigm for healthy eating supported by health and longevity research.
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Affiliation(s)
| | - David A Sinclair
- 2 Department of Genetics, Harvard Medical School , Boston, Massachusetts.,3 Department of Pharmacology, School of Medical Sciences, The University of New South Wales , Sydney, Australia
| | - Andrew A Bremer
- 4 Division of Diabetes, Endocrinology, and Metabolic Diseases, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health , Bethesda, Maryland
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Hall KD, Chen KY, Guo J, Lam YY, Leibel RL, Mayer LE, Reitman ML, Rosenbaum M, Smith SR, Walsh BT, Ravussin E. Energy expenditure and body composition changes after an isocaloric ketogenic diet in overweight and obese men. Am J Clin Nutr 2016; 104:324-33. [PMID: 27385608 PMCID: PMC4962163 DOI: 10.3945/ajcn.116.133561] [Citation(s) in RCA: 215] [Impact Index Per Article: 26.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2016] [Accepted: 06/06/2016] [Indexed: 11/14/2022] Open
Abstract
BACKGROUND The carbohydrate-insulin model of obesity posits that habitual consumption of a high-carbohydrate diet sequesters fat within adipose tissue because of hyperinsulinemia and results in adaptive suppression of energy expenditure (EE). Therefore, isocaloric exchange of dietary carbohydrate for fat is predicted to result in increased EE, increased fat oxidation, and loss of body fat. In contrast, a more conventional view that "a calorie is a calorie" predicts that isocaloric variations in dietary carbohydrate and fat will have no physiologically important effects on EE or body fat. OBJECTIVE We investigated whether an isocaloric low-carbohydrate ketogenic diet (KD) is associated with changes in EE, respiratory quotient (RQ), and body composition. DESIGN Seventeen overweight or obese men were admitted to metabolic wards, where they consumed a high-carbohydrate baseline diet (BD) for 4 wk followed by 4 wk of an isocaloric KD with clamped protein. Subjects spent 2 consecutive days each week residing in metabolic chambers to measure changes in EE (EEchamber), sleeping EE (SEE), and RQ. Body composition changes were measured by dual-energy X-ray absorptiometry. Average EE during the final 2 wk of the BD and KD periods was measured by doubly labeled water (EEDLW). RESULTS Subjects lost weight and body fat throughout the study corresponding to an overall negative energy balance of ∼300 kcal/d. Compared with BD, the KD coincided with increased EEchamber (57 ± 13 kcal/d, P = 0.0004) and SEE (89 ± 14 kcal/d, P < 0.0001) and decreased RQ (-0.111 ± 0.003, P < 0.0001). EEDLW increased by 151 ± 63 kcal/d (P = 0.03). Body fat loss slowed during the KD and coincided with increased protein utilization and loss of fat-free mass. CONCLUSION The isocaloric KD was not accompanied by increased body fat loss but was associated with relatively small increases in EE that were near the limits of detection with the use of state-of-the-art technology. This trial was registered at clinicaltrials.gov as NCT01967563.
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Affiliation(s)
- Kevin D Hall
- National Institute of Diabetes and Digestive and Kidney Diseases, Bethesda, MD;
| | - Kong Y Chen
- National Institute of Diabetes and Digestive and Kidney Diseases, Bethesda, MD
| | - Juen Guo
- National Institute of Diabetes and Digestive and Kidney Diseases, Bethesda, MD
| | - Yan Y Lam
- Pennington Biomedical Research Center, Baton Rouge, LA
| | | | | | - Marc L Reitman
- National Institute of Diabetes and Digestive and Kidney Diseases, Bethesda, MD
| | | | - Steven R Smith
- The Translational Research Institute for Metabolism and Diabetes, Orlando, FL
| | | | - Eric Ravussin
- Pennington Biomedical Research Center, Baton Rouge, LA
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Holdsworth E, Thorogood N, Sorhaindo A, Nanchahal K. A Qualitative Study of Participant Engagement With a Weight Loss Intervention. Health Promot Pract 2016; 18:245-252. [PMID: 27466266 DOI: 10.1177/1524839916659847] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
BACKGROUND Overweight and obesity are major public health problems and an increasing global challenge. In lieu of wider policy changes to tackle the obesogenic environment in which we presently reside, improving the design of individual-level weight loss interventions is important. AIM To identify which aspects of the Camden Weight Loss randomized controlled trial weight loss intervention participants engaged with, with the aim of improving the design of future studies and maximizing retention. METHOD A qualitative study comprising semistructured interviews ( n = 18) and a focus group ( n = 5) with intervention participants. RESULTS Two important aspects of participant engagement with the intervention consistently emerged from interviews and focus group: the advisor-participant relationship and the program structure. Some materials used during the program sessions were important in supporting the intervention; however, others were not well received by participants. CONCLUSION An individual-level weight loss intervention should be acceptable from the patient perspective in order to ensure participants are engaged with the program for as long as possible to maximize favorable results. Providing ongoing support in a long-term program with a trained empathetic advisor may be effective at engaging with people trying to lose weight in a weight loss intervention.
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Karasu SR. The Obesities: An Overview of Convergent and Divergent Paradigms. Am J Lifestyle Med 2016; 10:84-96. [PMID: 30202260 PMCID: PMC6125090 DOI: 10.1177/1559827614537773] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2013] [Revised: 02/07/2014] [Accepted: 02/10/2014] [Indexed: 12/17/2022] Open
Abstract
The study of obesity lends itself to difficulties not only due to our imprecise ability to measure body composition, food consumption, and physical activity but also, even more important, due to complexities involved in defining and conceptualizing obesity. For centuries, obesity has been considered a disease, although researchers and clinicians cannot agree on definitions of "disease" or, if it is one, whether obesity is a disease of metabolism, inflammation, brown fat, chronobiology, the blood-brain barrier, the right brain, or even of infectious origin. The concept of "obesity" as a disease remains controversial to some because not everyone who has excess adipose tissue has any evidence of disease. Obesity, though, has also been considered a sin, a crime against society, an aesthetic crime, a self-inflicted disability, an example of body diversity, a failure in the regulation of energy balance, an appropriate or even inappropriate adaptation to our increasingly obesogenic environment, a genetic disorder, and a psychological/behavioral disorder of overeating involving self-regulation or even addiction. Five major paradigms-medical, sociocultural, evolutionary, environmental, and psychological/behavioral, all with their own subcategorical models-have been identified. All 5 paradigms are required because we are dealing not with "obesity" but with a plurality, the "obesities."
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Knopp MM, Löbmann K, Elder DP, Rades T, Holm R. Recent advances and potential applications of modulated differential scanning calorimetry (mDSC) in drug development. Eur J Pharm Sci 2015; 87:164-73. [PMID: 26721421 DOI: 10.1016/j.ejps.2015.12.024] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2015] [Revised: 12/06/2015] [Accepted: 12/18/2015] [Indexed: 11/17/2022]
Abstract
Differential scanning calorimetry (DSC) is frequently the thermal analysis technique of choice within preformulation and formulation sciences because of its ability to provide detailed information about both the physical and energetic properties of a substance and/or formulation. However, conventional DSC has shortcomings with respect to weak transitions and overlapping events, which could be solved by the use of the more sophisticated modulated DSC (mDSC). mDSC has multiple potential applications within the pharmaceutical field and the present review provides an up-to-date overview of these applications. It is aimed to serve as a broad introduction to newcomers, and also as a valuable reference for those already practising in the field. Complex mDSC was introduced more than two decades ago and has been an important tool for the quantification of amorphous materials and development of freeze-dried formulations. However, as discussed in the present review, a number of other potential applications could also be relevant for the pharmaceutical scientist.
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Affiliation(s)
- Matthias Manne Knopp
- Pharmaceutical Science and CMC Biologics, H. Lundbeck A/S, 2500, Valby, Denmark; Institute of Pharmacy and Biochemistry, Johannes Gutenberg University of Mainz, 55128 Mainz, Germany
| | - Korbinian Löbmann
- Department of Pharmacy, University of Copenhagen, 2100 Copenhagen, Denmark
| | - David P Elder
- Platform Technology and Science, GlaxoSmithKline, SG12 0DP Hertfordshire, United Kingdom
| | - Thomas Rades
- Department of Pharmacy, University of Copenhagen, 2100 Copenhagen, Denmark
| | - René Holm
- Pharmaceutical Science and CMC Biologics, H. Lundbeck A/S, 2500, Valby, Denmark; Department of Pharmacy, University of Copenhagen, 2100 Copenhagen, Denmark.
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Giroud S, Zahn S, Criscuolo F, Chery I, Blanc S, Turbill C, Ruf T. Late-born intermittently fasted juvenile garden dormice use torpor to grow and fatten prior to hibernation: consequences for ageing processes. Proc Biol Sci 2015; 281:rspb.2014.1131. [PMID: 25377448 DOI: 10.1098/rspb.2014.1131] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Torpor is thought to slow age-related processes and to sustain growth and fattening of young individuals. Energy allocation into these processes represents a challenge for juveniles, especially for those born late in the season. We tested the hypothesis that late-born juvenile garden dormice (Eliomys quercinus) fed ad libitum ('AL', n = 9) or intermittently fasted ('IF', n = 9) use short torpor bouts to enhance growth and fat accumulation to survive winter. IF juveniles displayed more frequent and longer torpor bouts, compared with AL individuals before hibernation. Torpor frequency correlated negatively with energy expenditure and water turnover. Hence, IF juveniles gained mass at the same rate, reached similar pre-hibernation fattening and displayed identical hibernating patterns and mass losses as AL animals. We found no group differences in relative telomere length (RTL), an indicator of ageing, during the period of highest summer mass gain, despite greater torpor use by IF juveniles. Percentage change in RTL was negatively associated with mean and total euthermic durations among all individuals during hibernation. We conclude that torpor use promotes fattening in late-born juvenile dormice prior to hibernation. Furthermore, we provided the first evidence for a functional link between time spent in euthermy and ageing processes over winter.
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Affiliation(s)
- Sylvain Giroud
- Department of Integrative Biology and Evolution, Research Institute of Wildlife Ecology, University of Veterinary Medicine Vienna, Savoyenstraße 1, 1160 Vienna, Austria
| | - Sandrine Zahn
- Université de Strasbourg, IPHC, 23 rue Becquerel 67087 Strasbourg, France CNRS, UMR7178, 67087 Strasbourg, France
| | - François Criscuolo
- Université de Strasbourg, IPHC, 23 rue Becquerel 67087 Strasbourg, France CNRS, UMR7178, 67087 Strasbourg, France
| | - Isabelle Chery
- Université de Strasbourg, IPHC, 23 rue Becquerel 67087 Strasbourg, France CNRS, UMR7178, 67087 Strasbourg, France
| | - Stéphane Blanc
- Université de Strasbourg, IPHC, 23 rue Becquerel 67087 Strasbourg, France CNRS, UMR7178, 67087 Strasbourg, France
| | - Christopher Turbill
- Hawkesbury Institute for the Environment, Hawkesbury Campus, University of Western Sydney, Bourke Street, Richmond, 2753 NSW, Australia
| | - Thomas Ruf
- Department of Integrative Biology and Evolution, Research Institute of Wildlife Ecology, University of Veterinary Medicine Vienna, Savoyenstraße 1, 1160 Vienna, Austria
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Buttet S, Dolar V. Toward a quantitative theory of food consumption choices and body weight. ECONOMICS AND HUMAN BIOLOGY 2015; 17:143-156. [PMID: 25453360 DOI: 10.1016/j.ehb.2014.10.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/18/2013] [Revised: 10/10/2014] [Accepted: 10/16/2014] [Indexed: 06/04/2023]
Abstract
We propose a calibrated dynamic model of food consumption choices and body weight to study changes in daily caloric intake, weight, and the away-from-home share of calories consumed by adult men and women in the U.S. during the period between 1971 and 2006. Calibration reveals substantial preference heterogeneity between men and women. For example, utility losses stemming from weight gains are ten times greater for women compared to men. Counterfactual experiments show that changes in food prices and household income account for half of the increase in weight of adult men, but only a small fraction of women's weight. We argue that quantitative models of food consumption choices and body weight have a unique role to play in future research in the economics of obesity.
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Affiliation(s)
- Sebastien Buttet
- Guttman Community College, The City University of New York, 50 West 40th Avenue, New York, NY 11018, United States
| | - Veronika Dolar
- Economics Department, Long Island University, 720 Northern Boulevard, Brookville, NY 11542, United States.
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Crino M, Sacks G, Vandevijvere S, Swinburn B, Neal B. The Influence on Population Weight Gain and Obesity of the Macronutrient Composition and Energy Density of the Food Supply. Curr Obes Rep 2015; 4:1-10. [PMID: 26627085 DOI: 10.1007/s13679-014-0134-7] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Rates of overweight and obesity have increased dramatically in all regions of the world over the last few decades. Almost all of the world's population now has ubiquitous access to low-cost, but highly-processed, energy-dense, nutrient-poor food products. These changes in the food supply, rather than decreases in physical activity, are most likely the primary driver of population weight gain and obesity. To-date, the majority of prevention efforts focus on personalised approaches targeting individuals. Population-wide food supply interventions addressing sodium and trans fat reduction have proven highly effective and comparable efforts are now required to target obesity. The evidence suggests that strategies focusing upon reducing the energy density and portion size of foods will be more effective than those targeting specific macronutrients. Government leadership, clearly specified targets, accountability and transparency will be the key to achieving the food supply changes required to address the global obesity epidemic.
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Affiliation(s)
- Michelle Crino
- The George Institute for Global Health, University of Sydney, Level 10, King George V Building, 83-117 Missenden Rd, Camperdown, NSW, 2050, Sydney, Australia.
| | - Gary Sacks
- WHO Collaborating Centre for Obesity Prevention, Deakin University, 221 Burwood Highway, Burwood, VIC, 3125, Australia.
| | - Stefanie Vandevijvere
- School of Population Health, University of Auckland, Private Bag 92019, Auckland Mail Centre, Auckland, 1142, New Zealand.
| | - Boyd Swinburn
- WHO Collaborating Centre for Obesity Prevention, Deakin University, 221 Burwood Highway, Burwood, VIC, 3125, Australia.
- School of Population Health, University of Auckland, Private Bag 92019, Auckland Mail Centre, Auckland, 1142, New Zealand.
| | - Bruce Neal
- The George Institute for Global Health, University of Sydney, Level 10, King George V Building, 83-117 Missenden Rd, Camperdown, NSW, 2050, Sydney, Australia.
- The Royal Prince Alfred Hospital, Sydney, Australia.
- Imperial College, London, UK.
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Thermic effect of food, exercise, and total energy expenditure in active females. J Sci Med Sport 2015; 18:204-8. [DOI: 10.1016/j.jsams.2014.01.008] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2013] [Revised: 01/16/2014] [Accepted: 01/23/2014] [Indexed: 11/22/2022]
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50
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Mahmoud AH, El Anany AM. Nutritional and sensory evaluation of a complementary food formulated from rice, faba beans, sweet potato flour, and peanut oil. Food Nutr Bull 2015; 35:403-13. [PMID: 25639125 DOI: 10.1177/156482651403500402] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
BACKGROUND Childhood malnutrition is a common disorder in developing countries. OBJECTIVE To formulate a complementary food from rice, germinated-decoated faba bean, orange-fleshed sweet potato flour, and peanut oil (RFPP formula) for infants aged 6 to 24 months. METHODS The nutritional and sensory characteristics of the RFPP complementary food in comparison with those of a commercial complementary food were determined using standard official procedures. RESULTS The levels of protein (17.89 g/100 g), fat (10.35 g/100 g), carbohydrate (67.82 g/100 g), and energy (435.99 kcal/100 g) of the RFPP complementary food met the specifications of the Codex standard (1991) and the Egyptian Standard No. 3284 (2005). The essential amino acid contents of the RFPP complementary food were higher than the amino acid profile of the Food and Agriculture Organization/World Health Organization/United Nations University (2002) reference protein for children 0.5 to 1 and 1 to 2 years of age. The RFPP complementary food had high levels (54.00%) of monounsaturated fatty acids. However, the highest level of saturated fatty acids (51.10%) was recorded for the commercial complementary food. The sensory evaluation results, using a nine-point hedonic scale ranging from 1 (dislike extremely) to 9 (like extremely), show that the RFPP complementary food was acceptable in appearance (7.20), color (6.35), aroma (6.75), taste (7.25), and mouthfeel (7.10) and had an overall acceptability of 6.40. CONCLUSIONS The RFPP formulated complementary food was acceptable and adequate in nutrients for weaning purposes.
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