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Burdet H, Xanthos A, Marques-Vidal P. Women are lean and men are also lean: nutrition titles in women's and men's health magazines. BMC Public Health 2024; 24:1230. [PMID: 38702675 PMCID: PMC11069188 DOI: 10.1186/s12889-024-18706-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2023] [Accepted: 04/24/2024] [Indexed: 05/06/2024] Open
Abstract
BACKGROUND Whether nutrition messages in popular health magazines differ by country or season has seldom been studied. We assessed the nutrition topics featured in the headlines of Men's Health® (MH) and Women's Health® (WH) magazines from different countries. METHODS We sampled MH and WH magazines from Portugal, South Africa, Spain, the UK and the USA. Nutrition-related headlines were categorized as weight loss, weight gain, micronutrients and other. RESULTS The most frequent topics were "Other" (44%) and "weight loss" (41%), while "micronutrients" represented 4%. Topics related to weight gain were more frequent in MH (19% vs. 2% in WH), while no difference was found for weight loss (44% vs. 37% in WH). On multivariable analysis, weight gain had a higher likelihood of being present in MH than in WH, Odds ratio and (95% confidence interval): 8.3 (2.2-90.9), p = 0.002, while no association was found for weight loss: OR 1.1 (0.6-2.0), p = 0.80. Weight loss was absent from the US WH and present in two thirds of the Portuguese WH; in MH, weight gain was evenly distributed between countries. Prevalence of the weight loss topic was lower in March (15% vs. 54% in January, p < 0.01 by logistic regression) and to a lesser degree in June (35%) and July (35%). No seasonality was found for the "weight gain" topic. CONCLUSION In WH and MH magazines, nutrition topics vary according to gender, country, and season. Weight gain remains a male topic, while weight loss is equally prevalent in both women's and men's magazines.
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Affiliation(s)
- Hélène Burdet
- Faculty of Biology and Medicine, University of Lausanne, Lausanne, Switzerland
| | - Aris Xanthos
- Department of Language and Information Science, University of Lausanne, Bâtiment Anthropole, Lausanne, 1015, Switzerland
| | - Pedro Marques-Vidal
- Department of medicine, internal medicine, Lausanne university hospital and University of Lausanne, 46 rue du Bugnon, Lausanne, 1011, Switzerland.
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Parsons K, Strout K, Winn C, Therrien-Genest M, Yerxa K, McNamara J. Development of Master Chef: A Curriculum to Promote Nutrition and Mindful Eating among College Students. Int J Environ Res Public Health 2024; 21:487. [PMID: 38673398 PMCID: PMC11050589 DOI: 10.3390/ijerph21040487] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/19/2024] [Revised: 04/12/2024] [Accepted: 04/13/2024] [Indexed: 04/28/2024]
Abstract
Research suggests that success in improving undergraduates' diet quality can benefit from a multifaceted approach, incorporating nutrition education, mindful eating, and culinary skill-building. The current study aimed (1) to review the development of Master Chef, a mindful eating curriculum, and (2) assess its feasibility through an online expert review. Expert reviewers were recruited through an online mindful eating course. Survey questions included both Likert-style and open-ended questions. Quantitative survey data were analyzed using descriptive statistics. Two independent researchers coded qualitative data, which then underwent inductive thematic analysis. Reviewers (N = 7) were experts in the fields of nutrition, psychology, and mindful eating. Master Chef's overall feasibility was rated highly. The overall curriculum was perceived positively. However, it was recommended that the program include more mindfulness. Master Chef was identified as a feasible program for improving the health behaviors of college students. Pilot dissemination and analysis will be necessary to assess the program's effectiveness in supporting disease prevention among undergraduates.
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Affiliation(s)
- Kayla Parsons
- School of Food and Agriculture, University of Maine, Orono, ME 04469, USA; (K.P.); (C.W.); (M.T.-G.); (K.Y.)
| | - Kelley Strout
- School of Nursing, University of Maine, Orono, ME 04469, USA;
| | - Caitlyn Winn
- School of Food and Agriculture, University of Maine, Orono, ME 04469, USA; (K.P.); (C.W.); (M.T.-G.); (K.Y.)
| | - Mona Therrien-Genest
- School of Food and Agriculture, University of Maine, Orono, ME 04469, USA; (K.P.); (C.W.); (M.T.-G.); (K.Y.)
| | - Kate Yerxa
- School of Food and Agriculture, University of Maine, Orono, ME 04469, USA; (K.P.); (C.W.); (M.T.-G.); (K.Y.)
| | - Jade McNamara
- School of Food and Agriculture, University of Maine, Orono, ME 04469, USA; (K.P.); (C.W.); (M.T.-G.); (K.Y.)
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Chiang CH, Zhang TR, Hsu PS, Lin SP, Chen CY. Weight regain, but not weight loss exacerbates hepatic fibrosis during multiple weight cycling events in male mice. Eur J Nutr 2024; 63:965-976. [PMID: 38265751 DOI: 10.1007/s00394-024-03326-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2023] [Accepted: 01/12/2024] [Indexed: 01/25/2024]
Abstract
PURPOSE Weight cycling is a phenomenon characterized by fluctuating body weight that is commonly observed in individuals employing intentional weight loss methods. Despite its prevalence, the impact of weight cycling on health remains equivocal. The current investigation aimed to examine the effects of weight cycling on liver health. METHODS The weight cycling model was established by switching the feeding method of mice between ad libitum (AL) and restricted intake (DR or 60% of AL) of the breeding diet to cause weight gain and weight loss, respectively. The weight cycling model comprised two and a half cycles, with one group terminating the experience during the weight-gain period (S-AL) and the other during the weight-loss period (S-DR). Liver tissue was collected to investigate morphology alterations, apoptosis, lipid metabolism, and mitochondrial homeostasis. RESULTS The results demonstrated that the termination point of weight cycling affected body weight and hepatic steatosis. All parameters examined in the S-DR mice exhibited a comparable trend to those observed in the DR mice. Notably, S-AL mice showed a significant increase in lipid metabolism-related proteins in the liver compared to AL-fed mice, along with reduced lipid droplets. Moreover, hepatic apoptosis and fibrosis were exacerbated in the S-AL mice compared to AL mice, whereas mitochondrial fusion, biogenesis, and mitophagy were decreased in the S-AL mice. CONCLUSION Weight cycling ending in weight gain exacerbated hepatic fibrosis, potentially by inducing apoptosis or disrupting mitochondrial homeostasis. Conversely, weight cycling ending in weight loss demonstrated beneficial effects on hepatic health.
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Affiliation(s)
- Chun-Hsien Chiang
- Department of Animal Science and Technology, National Taiwan University, Taipei, Taiwan
| | - Ting-Rui Zhang
- Department of Animal Science and Technology, National Taiwan University, Taipei, Taiwan
| | - Pu-Sheng Hsu
- Institute of Biotechnology, National Taiwan University, Taipei, Taiwan
| | - Shau-Ping Lin
- Institute of Biotechnology, National Taiwan University, Taipei, Taiwan
| | - Ching-Yi Chen
- Department of Animal Science and Technology, National Taiwan University, Taipei, Taiwan.
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Sanaya N, Janusaite M, Dalamaga M, Magkos F. The Physiological Effects of Weight-Cycling: A Review of Current Evidence. Curr Obes Rep 2024; 13:35-50. [PMID: 38172475 DOI: 10.1007/s13679-023-00539-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 11/02/2023] [Indexed: 01/05/2024]
Abstract
PURPOSE OF REVIEW There is a common perception among the public that yo-yo dieting, defined as repeated cycles of weight loss followed by weight regain, results in accumulation of fat in the body and lower metabolic rate, thus hindering subsequent attempts to lose weight. We evaluated the effects of weight-cycling on body weight and body mass index (BMI), body composition including fat mass (FM) and lean body mass (LBM), and resting metabolic rate (RMR), by systematically reviewing existing scientific literature. RECENT FINDINGS Twenty-three cross-sectional and cohort studies (including subjects with a history of weight-cycling compared to those without such history) and interventional studies (evaluating physiological effects during one or more cycles of weight loss and regain) were identified, conducted in generally healthy adults across various age groups, races, and both genders, who had normal weight, overweight, or obesity. Eighteen studies investigated the association between weight-cycling and body weight or BMI, and thirteen of them found no significant association. Fifteen out of twenty studies also found no increase in FM, and none of eighteen studies found a decrease in LBM. Twelve out of fourteen studies reported no adverse changes in RMR either. The overwhelming majority of evidence suggests that weight-cycling (yo-yo effect) is not associated with any adverse effects in body weight, body composition, and metabolic rate. Accordingly, healthy individuals who struggle with overweight or obesity should not be discouraged from repeated attempts to lose the excess weight.
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Affiliation(s)
- Nora Sanaya
- Department of Nutrition, Exercise and Sports, University of Copenhagen, Rolighedsvej 26, 1958, Frederiksberg C, Denmark
| | - Monika Janusaite
- Department of Nutrition, Exercise and Sports, University of Copenhagen, Rolighedsvej 26, 1958, Frederiksberg C, Denmark
| | - Maria Dalamaga
- Department of Biological Chemistry, National and Kapodistrian University of Athens Medical School, Athens, Greece
| | - Faidon Magkos
- Department of Nutrition, Exercise and Sports, University of Copenhagen, Rolighedsvej 26, 1958, Frederiksberg C, Denmark.
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Lee VYJ, Houston L, Perkovic A, Barraclough JY, Sweeting A, Yu J, Fletcher RA, Arnott C. The Effect of Weight Loss Through Lifestyle Interventions in Patients With Heart Failure With Preserved Ejection Fraction-A Systematic Review and Meta-Analysis of Randomised Controlled Trials. Heart Lung Circ 2024; 33:197-208. [PMID: 38320881 DOI: 10.1016/j.hlc.2023.11.022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2023] [Revised: 11/26/2023] [Accepted: 11/27/2023] [Indexed: 02/08/2024]
Abstract
BACKGROUND Heart failure with preserved ejection fraction (HFpEF) accounts for >50% of heart failure cases and is associated with significant morbidity and health system burden. To date, there have been limited treatment options proven to improve outcomes in these patients, with sodium glucose co-transporter 2 (SGLT2) inhibitors the first class of drug to demonstrate significant clinical benefits, including reductions in heart failure hospitalisation. Obesity is associated with all forms of heart failure and has been linked with worse clinical outcomes. Numerous reviews support the benefits of weight loss in heart failure, more specifically in patients with heart failure with reduced ejection fraction. However, the evidence in HFpEF patients is less clear. With limited pharmacotherapy options and growing support for weight loss in patients with HFpEF, this systematic review and meta-analysis aims to examine the effects of lifestyle interventions on weight loss and other health outcomes in patients with HFpEF. METHODS Web of Science, Embase, Scopus, and PubMed databases were searched to identify relevant studies up to February 2023. Included studies were randomised controlled trials (with a duration of four weeks or more) of lifestyle interventions conducted in adults with HFpEF that reported weight loss. Outcomes of interest were body weight, body mass index (BMI), blood pressure (systolic and diastolic), aerobic capacity (6-minute walk distance), New York Heart Association (NYHA) Functional Classification, self-reported health quality of life (Minnesota Living with Heart Failure Questionnaire; MLHFQ), and N-terminal pro B-Type Natriuretic Peptide (NT-proBNP) levels. Review Manager software was used to conduct random effect meta-analyses, forest plots were generated for each outcome, and between-study heterogeneity was estimated using the I2 test statistic. Risk-of-bias assessment used the Cochrane risk-of-bias tool, and the certainty of the evidence was assessed using GRADE. RESULTS From 2,282 records identified, six studies with a total of 375 participants, between three to six months in duration, were included in this systematic review and meta-analysis. Lifestyle interventions consisted of diet only, exercise only, combination of diet and exercise, and education and exercise. Over a mean follow-up of 4.5 months, pooled effects of the interventions were associated with a reduction in body weight of >5kg (weight mean difference (WMD): -5.30 kg; 95% CI: -8.72 to -1.87; p=0.002), and a reduction in resting systolic (WMD: -2.98 mmHg; 95% CI: -4.20 to -1.76; p<0.001) and diastolic blood pressure (WMD: -4.51 mmHg; 95% CI: -8.39 to -0.64; p=0.02) compared with those who received usual care. Interventions also improved 6-minute walk distance (WMD: 43.63 m; 95% CI: 22.28 to 64.97; p<0.001), NYHA class (WMD: -0.54; 95% CI: -0.75 to -0.33; p<0.001), and MLHFQ score (WMD: -17.77; 95% CL: -19.00 to -16.53; p<0.001). CONCLUSION In patients with HFpEF, lifestyle intervention was associated with a significant reduction in body weight and had favourable effects on blood pressure, aerobic capacity, NYHA class, and health-related quality of life. Further research is needed in this population to examine the feasibility and durability of weight loss interventions and to examine the potential impact on hard clinical endpoints.
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Affiliation(s)
- Vivian Y J Lee
- Cardiovascular Program, The George Institute for Global Health, Sydney, NSW, Australia; Faculty of Medicine, University of New South Wales, Sydney, NSW, Australia.
| | - Lauren Houston
- Cardiovascular Program, The George Institute for Global Health, Sydney, NSW, Australia; Faculty of Medicine, University of New South Wales, Sydney, NSW, Australia
| | | | - Jennifer Y Barraclough
- Cardiovascular Program, The George Institute for Global Health, Sydney, NSW, Australia; Faculty of Medicine, University of New South Wales, Sydney, NSW, Australia
| | - Arianne Sweeting
- Cardiovascular Program, The George Institute for Global Health, Sydney, NSW, Australia; Department of Endocrinology, Royal Prince Alfred Hospital, Sydney, NSW, Australia; Sydney Medical School, University of Sydney, Sydney, NSW, Australia
| | - Jie Yu
- Cardiovascular Program, The George Institute for Global Health, Sydney, NSW, Australia; Faculty of Medicine, University of New South Wales, Sydney, NSW, Australia; Department of Cardiology, Peking University Third Hospital, Beijing, China
| | - Robert A Fletcher
- Cardiovascular Program, The George Institute for Global Health, Sydney, NSW, Australia
| | - Clare Arnott
- Cardiovascular Program, The George Institute for Global Health, Sydney, NSW, Australia; Faculty of Medicine, University of New South Wales, Sydney, NSW, Australia; Sydney Medical School, University of Sydney, Sydney, NSW, Australia; Department of Cardiology, Royal Prince Alfred Hospital, Sydney, NSW, Australia
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Swank C, McShan E, Bottiglieri T, Zurawski S, Callender L, Bennett M, Dubiel R, Driver S. Linking biomarkers with healthy lifestyle outcomes after stroke: Supplementary results of a 12-month randomized controlled trial. Nutr Metab Cardiovasc Dis 2024; 34:475-484. [PMID: 37949707 DOI: 10.1016/j.numecd.2023.09.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/06/2023] [Revised: 09/05/2023] [Accepted: 09/07/2023] [Indexed: 11/12/2023]
Abstract
BACKGROUND AND AIMS Participation in a healthy lifestyle intervention such as the Diabetes Prevention Program Group Lifestyle Balance-adapted for stroke (GLB-CVA) may reduce stroke burden. Identifying biomarkers associated with lifestyle changes may enhance an individualized approach to stroke recovery. We investigated metabolic biomarkers related to cardiovascular and neurological function in individuals with stroke in the GLB-CVA study and healthy (non-stroke) individuals. METHODS AND RESULTS Participants with chronic (>12 months) stroke were recruited to this wait-list randomized controlled trial if they were overweight (BMI ≥25 kg/m2). Participants were randomized to (1) the GLB-CVA program to complete 22 educational sessions addressing behavioral principals of dietary and physical activity or (2) a 6 month wait-list control (WLC). Biomarkers [Plasma irisin, vascular endothelial growth factor, lipoprotein-associated phospholipase A2 (Lp-PLA2), insulin-like growth factor 1 and brain-derived neurotrophic factor (BDNF)] were collected at baseline, 3, and 6 months. Age-matched healthy individuals were recruited for biomarker assessment. Compared to healthy adults (n = 19), participants with stroke (GLB-CVA = 24; WLC = 24) at baseline had higher tHcy levels (p < 0.001) and lower PLA2 levels (p = 0.016). No statistically significant interactions were observed for any biomarkers between the GLB-CVA and WLC or between people who achieved 5% weight loss and those who did not. CONCLUSION Participation in a 6-month healthy lifestyle program did not result in statistically significant changes to select metabolic biomarker levels for our participants with chronic stroke. However, participants with stroke demonstrated a unique biomarker profile compared to age-matched healthy individuals.
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Affiliation(s)
- Chad Swank
- Baylor Scott and White Research Institute, Baylor Scott and White Institute for Rehabilitation, Dallas, TX, USA.
| | - Evan McShan
- Baylor Scott and White Research Institute, Dallas, TX, USA
| | - Teodoro Bottiglieri
- Center of Metabolomics, Institute of Metabolic Disease, Baylor Scott & White Research Institute, Dallas, TX, USA
| | - Sandy Zurawski
- Center of Metabolomics, Institute of Metabolic Disease, Baylor Scott & White Research Institute, Dallas, TX, USA
| | | | - Monica Bennett
- Baylor Scott and White Research Institute, Dallas, TX, USA
| | - Randi Dubiel
- Physical Medicine and Rehabilitation, Baylor Scott and White Institute for Rehabilitation, Dallas, TX, USA
| | - Simon Driver
- Baylor Scott and White Research Institute, Baylor Scott and White Institute for Rehabilitation, Dallas, TX, USA
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Heidebrecht C, Fierheller D, Martel S, Andrews A, Hollahan A, Griffin L, Meerai S, Lock R, Nabavian H, D'Silva C, Friedman M, Zenlea I. Raising awareness of anti-fat stigma in healthcare through lived experience education: a continuing professional development pilot study. BMC Med Educ 2024; 24:64. [PMID: 38229086 DOI: 10.1186/s12909-023-04889-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/08/2022] [Accepted: 11/20/2023] [Indexed: 01/18/2024]
Abstract
BACKGROUND Anti-fat attitudes and weight-based discrimination are prevalent in healthcare settings and among healthcare practitioners and clinical trainees, and can result in immense harm to patients. There is increasing recognition that anti-fat bias in healthcare is a critical issue that must be addressed, but there is a dearth of evidence demonstrating sustained attitude and behavioural change among clinicians, illustrating a need for more innovative educational approaches and rigorous evaluation. We describe the co-design and delivery of a narrative-based continuing professional development curriculum aimed at raising awareness of weight-based bias and stigma. METHODS Our research team of lived experience educators, clinicians and researchers collaboratively developed a series of seven podcast episodes comprised of narrative descriptions of lived experiences with and impacts of weight bias, stigma and discrimination in healthcare settings, as well as a post-podcast workshop to facilitate reflection and discussion between participants. The curriculum was piloted among 20 clinicians practicing at a large urban hospital in Mississauga, Canada. We explored feasibility, acceptability and learning impact by analyzing responses to questionnaires completed following each podcast episode and responses shared during the workshops and follow-up feedback sessions. RESULTS We observed high acceptability and feasibility of the curriculum. Participants experienced the podcast as a practical and convenient learning format and the workshop as a valuable opportunity to collectively debrief and reflect. The learning impact of the curriculum was strong; participants described a range of emotions elicited by the podcasts, engaged in self-reflection, and expressed a desire to modify clinical approaches. Barriers to the application of learnings identified by participants include pervasiveness of the use of body mass index (BMI) as an indicator of risk and a criterion for referral; discomfort with difficult conversations; prevalent biomedical understandings about the association between weight and health; and clinicians' defensiveness. CONCLUSION This pilot study yielded promising findings and demonstrated potential impact on weight bias and stigma among healthcare providers. Necessary next steps include conducting larger scale, rigorous evaluations of the curriculum among broader populations, both health professions trainees and current healthcare providers.
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Affiliation(s)
| | - Dianne Fierheller
- Institute for Better Health, Trillium Health Partners, Mississauga, Canada
| | | | - Alex Andrews
- School of Social Work, Toronto Metropolitan University, Toronto, Canada
| | - Amanda Hollahan
- School of Social Work, Toronto Metropolitan University, Toronto, Canada
| | - Laura Griffin
- School of Social Work, Toronto Metropolitan University, Toronto, Canada
| | - Sonia Meerai
- Faculty of Social Work, Wilfrid Laurier University, Brantford, Canada
- Program for Health System and Technology Evaluation, Ted Rogers Centre for Heart Research / Peter Munk Cardiac Centre, Toronto General Hospital Research Institute, Toronto, Canada
| | - Raeden Lock
- Social Service Worker Program, Sheridan College, Oakville, Canada
| | - Helia Nabavian
- Postgraduate Medical Education, University of Toronto, Toronto, Canada
| | - Chelsea D'Silva
- Institute for Better Health, Trillium Health Partners, Mississauga, Canada
| | - May Friedman
- School of Social Work, Toronto Metropolitan University, Toronto, Canada
| | - Ian Zenlea
- Institute for Better Health, Trillium Health Partners, Mississauga, Canada.
- Department of Women's and Children's Health Program, Trillium Health Partners, Mississauga, Canada.
- Department of Paediatrics, University of Toronto, Toronto, Canada.
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Herbert S, Woolf K. Moving beyond Weight: A Narrative Review of the Dietary and Lifestyle Management for Reducing Cardiometabolic Risk in Polycystic Ovary Syndrome (PCOS). Nutrients 2023; 15:5069. [PMID: 38140328 PMCID: PMC10745999 DOI: 10.3390/nu15245069] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2023] [Revised: 12/02/2023] [Accepted: 12/08/2023] [Indexed: 12/24/2023] Open
Abstract
Polycystic ovary syndrome (PCOS) is the most common endocrine disorder experienced by women. PCOS is a lifelong condition associated with reproductive, metabolic, and psychological presentations. PCOS is also linked with increased prevalence of cardiometabolic risk factors. While an association between body weight and PCOS has been noted, cardiometabolic risk factors are prevalent in individuals with PCOS across body weights. Currently, no consensus exists as to the most appropriate lifestyle strategy for mitigating cardiometabolic risk in PCOS. A large proportion of the literature is focused on weight loss for individuals with PCOS who are overweight or experience obesity, despite PCOS being prevalent across body sizes. The aim of this narrative review is to assess dietary and lifestyle interventions aimed at reducing cardiometabolic risk in individuals with PCOS across body sizes. A total of 51 articles are included in this review. Overall, randomized controlled trials are limited and most studies focus on weight loss, excluding individuals classified within a healthy body weight range. Studies that modified the dietary pattern without an energy deficit saw improvements in cardiometabolic risk. Thus, less restrictive dietary approaches may be effective at reducing cardiometabolic risk in this population. This review also highlights the need for more sustainable lifestyle interventions that meet the needs of individuals with PCOS of varying body weights.
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Affiliation(s)
| | - Kathleen Woolf
- Department of Nutrition and Food Studies, Steinhart School of Culture, Education, and Human Development, New York University, New York, NY 10003, USA;
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Caslin HL, Cottam MA, Betjemann AM, Mashayekhi M, Silver HJ, Hasty AH. Single cell RNA-sequencing suggests a novel lipid associated mast cell population following weight cycling. bioRxiv 2023:2023.11.12.566786. [PMID: 38014269 PMCID: PMC10680619 DOI: 10.1101/2023.11.12.566786] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2023]
Abstract
Our recent study showed weight cycled mice have increased adipose mast cells compared to obese mice by single cell RNA-sequencing. Here, we aimed to confirm and elucidate these changes. Further analysis of our dataset showed that our initial mast cell cluster could subcluster into two unique populations: one with very high expression of classical mast cell markers and another with elevated lipid handling and antigen presentation genes. This new mast cell cluster accounted for most of the mast cells in the weight cycled group although it was not possible to detect the different populations by new studies with flow cytometry or Toluidine blue staining in mice, possibly due to a downregulation in classical mast cell genes. Interestingly, a pilot study in humans did suggest the existence of two mast cell populations in subcutaneous adipose tissue from obese women that appear similar to the murine populations detected by sequencing; one of which was significantly correlated with weight variance. Together, these data suggest that weight cycling may induce a unique population of mast cells similar to lipid associated macrophages. Future studies will focus on isolation of these cells to better determine their lineage, differentiation, and functional roles.
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Georgoulis M, Yiannakouris N, Kechribari I, Lamprou K, Perraki E, Vagiakis E, Kontogianni MD. Sustained improvements in the cardiometabolic profile of patients with obstructive sleep apnea after a weight-loss Mediterranean diet/lifestyle intervention: 12-month follow-up (6 months post-intervention) of the "MIMOSA" randomized clinical trial. Nutr Metab Cardiovasc Dis 2023; 33:1019-1028. [PMID: 36958969 DOI: 10.1016/j.numecd.2023.02.010] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/06/2022] [Revised: 02/10/2023] [Accepted: 02/13/2023] [Indexed: 02/20/2023]
Abstract
BACKGROUND AND AIMS Obstructive sleep apnea (OSA) and the metabolic syndrome (MS) frequently coexist and lead to increased cardiometabolic morbidity. We aimed to explore the long-term cardiometabolic benefits of a weight-loss Mediterranean diet/lifestyle intervention in OSA. METHODS AND RESULTS As many as 180 adults with overweight/obesity and polysomnography-diagnosed moderate-to-severe OSA were randomized to a standard care (SCG, n = 62), a Mediterranean diet (MDG, n = 59) or a Mediterranean lifestyle group (MLG, n = 59). All groups were prescribed with continuous positive airway pressure (CPAP), while intervention arms (MDG/MLG) additionally participated in a 6-month weight-loss intervention based on the Mediterranean diet/lifestyle. Cardiometabolic parameters were evaluated at baseline and 12 months (6 months post-intervention). Data were analyzed using the intention-to-treat method, and 12-month between-group differences were explored while adjusting for age, sex, baseline status and CPAP use. Compared to the SCG, intervention arms exhibited lower insulin, triglycerides and high-sensitivity C-reactive protein, and higher high-density lipoprotein cholesterol; the MDG also exhibited lower diastolic blood pressure, while the MLG exhibited lower glucose and systolic blood pressure (all P < 0.050). The relative risk (95% confidence interval) of MS was 0.60 (0.36, 0.99) in the MDG versus the SCG, 0.33 (0.20, 0.55) in the MLG versus the SCG and 0.55 (0.32, 0.93) in the MLG versus the MDG. The risk of MS remained lower in the MLG versus the other study groups (both P < 0.050) after additional adjustment for body weight change. CONCLUSION Cardiometabolic benefits of a 6-month healthy dietary/lifestyle intervention are sustainable 6 months post-intervention in OSA. TRIAL REGISTRATION ClinicalTrials.gov, NCT02515357, August 4, 2015.
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Affiliation(s)
- Michael Georgoulis
- Department of Nutrition & Dietetics, School of Health Sciences & Education, Harokopio University, 70 Eleftheriou Venizelou Str., 17676 Athens, Greece
| | - Nikos Yiannakouris
- Department of Nutrition & Dietetics, School of Health Sciences & Education, Harokopio University, 70 Eleftheriou Venizelou Str., 17676 Athens, Greece
| | - Ioanna Kechribari
- Department of Nutrition & Dietetics, School of Health Sciences & Education, Harokopio University, 70 Eleftheriou Venizelou Str., 17676 Athens, Greece
| | - Kallirroi Lamprou
- Center of Sleep Disorders, 1st Department of Critical Care and Pulmonary Services, Evangelismos Hospital, 45-47 Ipsilantou Str., 10676 Athens, Greece
| | - Eleni Perraki
- Center of Sleep Disorders, 1st Department of Critical Care and Pulmonary Services, Evangelismos Hospital, 45-47 Ipsilantou Str., 10676 Athens, Greece
| | - Emmanοuil Vagiakis
- Center of Sleep Disorders, 1st Department of Critical Care and Pulmonary Services, Evangelismos Hospital, 45-47 Ipsilantou Str., 10676 Athens, Greece
| | - Meropi D Kontogianni
- Department of Nutrition & Dietetics, School of Health Sciences & Education, Harokopio University, 70 Eleftheriou Venizelou Str., 17676 Athens, Greece.
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Mensinger JL, Shepherd BF, Schapiro S, Aware Y, Brochu PM, Calogero RM, Tylka TL. Mediating effects of a weight-inclusive health promotion program on maladaptive eating in women with high body mass index. Eat Behav 2023; 49:101730. [PMID: 37121132 DOI: 10.1016/j.eatbeh.2023.101730] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/22/2022] [Revised: 02/14/2023] [Accepted: 04/17/2023] [Indexed: 05/02/2023]
Abstract
Research shows that individuals with a body mass index (BMI) over 30 have experienced an 11-fold increase in restrictive eating and a 7-fold increase in binge eating since the 1990s. Most health promotion programs for higher-weight individuals have not been developed with the high eating disorder risk for this population in mind. The purpose of current study was to test two hypothesized mechanisms underlying improvement in maladaptive eating patterns shown in a weight-inclusive health promotion program designed for women with BMIs at or above 30. Participants (N = 40) were primarily White (93 %), 30-45 years old (M = 39.83, SD = 4.34) with BMIs ranging from 30 to 45 kg/m2 (M = 37.42, SD = 3.58). Using the MEMORE macro, we tested a parallel mediation model hypothesizing that internalized weight stigma and intuitive eating would explain improvements on two subscales from the Three-Factor Eating Questionnaire-R18 after a 6-month program. Total effects of the program on uncontrolled (b = -3.76, SE = 0.64, p < .0001) and emotional eating (b = -1.79, SE = 0.34, p < .0001) were significant. The indirect effects (IE) of internalized weight stigma on uncontrolled eating (IE = 1.59, SE = 0.79, 95 % CI = 0.46, 3.49) and emotional eating (IE = 0.67, SE = 0.40, 95 % CI = 0.11, 1.68) were also significant. Likewise, the IEs of intuitive eating on uncontrolled eating (IE = 2.09, SE = 0.70, 95 % CI = 0.60, 3.38) and emotional eating (IE = 1.03, SE = 0.43, 95 % CI = 0.08, 1.82) were significant. These findings indicate that weight-inclusive health promotion programs that directly address weight bias and eating according to cues from the body may help higher-weight individuals improve maladaptive eating patterns via reductions in internalized weight stigma and increases in intuitive eating.
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Affiliation(s)
- Janell L Mensinger
- Department of Clinical and School Psychology, Nova Southeastern University, 3301 College Ave, 1073 Maltz, Fort Lauderdale, FL 33314, United States of America.
| | - Benjamin F Shepherd
- Department of Clinical and School Psychology, Nova Southeastern University, 3301 College Ave, 1073 Maltz, Fort Lauderdale, FL 33314, United States of America.
| | - Stevie Schapiro
- Department of Clinical and School Psychology, Nova Southeastern University, 3301 College Ave, 1073 Maltz, Fort Lauderdale, FL 33314, United States of America.
| | - Yashvi Aware
- Department of Clinical and School Psychology, Nova Southeastern University, 3301 College Ave, 1073 Maltz, Fort Lauderdale, FL 33314, United States of America.
| | - Paula M Brochu
- Department of Clinical and School Psychology, Nova Southeastern University, 3301 College Ave, 1073 Maltz, Fort Lauderdale, FL 33314, United States of America.
| | - Rachel M Calogero
- Department of Psychology, Western University, Westminster Hall, Office 321, London, ON N6K 5C2, Canada.
| | - Tracy L Tylka
- Department of Psychology, The Ohio State University, 170F Morrill Hall, 1465 Mt. Vernon Avenue, Marion, OH 43302, United States of America.
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12
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Gibbins KJ, Abel DE, Carletti AA, Morrison T, Sullivan EL, Marshall NE. Weight Bias in Obstetrics. Curr Obstet Gynecol Rep 2023. [DOI: 10.1007/s13669-023-00348-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
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13
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Mehran L, Honarvar M, Masoumi S, Khalili D, Amouzegar A, Azizi F. Weight fluctuation, mortality, and cardiovascular disease in adults in 18 years of follow-up: Tehran Lipid and Glucose Study. J Endocrinol Invest 2023; 46:37-49. [PMID: 35921037 DOI: 10.1007/s40618-022-01881-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/28/2022] [Accepted: 07/21/2022] [Indexed: 01/12/2023]
Abstract
PURPOSE Controversies exist in the effect of body weight loss and fluctuation on cardiovascular disease (CVD) and mortality. This study aims to assess the effect of weight variability on CVD and all-cause and cardiovascular mortality in the Tehran Lipid and Glucose Study (TLGS) cohort. METHOD Participants aged ≥ 40 year at the baseline period with at least 3 BMI measurements were included in this study. After excluding individuals with cancer, CVD, end-stage renal disease, systemic use of glucocorticoids, pregnancy, and missing covariates at the baseline, a total of 3461 participants were enrolled and followed for 18 years. BMI variability was defined using root mean squared error (RMSE) and average successive variability (ASV). In the RMSE method, BMI variability was calculated using the best-fitting model for BMI trend of each subject. Multivariate Cox proportional hazard models were applied to assess BMI variability's effect on CVD and mortality. RESULTS Among the 3461 participants in this study, the group with the highest weight variability had an increased risk of death for all-cause (HR 1.65; 95% CI 1.21-2.25), non-cardiovascular (HR 1.77; 95% CI 1.24-2.53), and non-cancer (HR 1.77; 95% CI 1.25-2.50) mortality. However, BMI variability showed to be protective against CVD (HR 0.76; 95% CI 0.6-0.97). These findings were significant in males, non-smokers, participants with age ≤ 60 year, BMI < 30, negative BMI slope, and both diabetic and non-diabetic subjects. CONCLUSION High BMI variability is associated with increased risk of all-cause, non-CVD, and non-cancer mortality, although protective for the CVD event. Appropriate strategies for body weight maintenance after weight loss could be adopted to avoid weight variability, particularly in non-obese subjects.
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Affiliation(s)
- L Mehran
- Endocrine Research Center, Research Institute for Endocrine Sciences, Shahid Beheshti University of Medical Sciences, No. 23, Parvaneh Street, Velenjak, P.O. Box: 19395-4763, Tehran, Islamic Republic of Iran
| | - M Honarvar
- Endocrine Research Center, Research Institute for Endocrine Sciences, Shahid Beheshti University of Medical Sciences, No. 23, Parvaneh Street, Velenjak, P.O. Box: 19395-4763, Tehran, Islamic Republic of Iran
| | - S Masoumi
- Endocrine Research Center, Research Institute for Endocrine Sciences, Shahid Beheshti University of Medical Sciences, No. 23, Parvaneh Street, Velenjak, P.O. Box: 19395-4763, Tehran, Islamic Republic of Iran
- Department of Biostatistics, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Islamic Republic of Iran
| | - D Khalili
- Prevention of Metabolic Disorders Research Center, Research Institute for Endocrine Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Islamic Republic of Iran
- Department of Biostatistics and Epidemiology, Research Institute for Endocrine Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Islamic Republic of Iran
| | - A Amouzegar
- Endocrine Research Center, Research Institute for Endocrine Sciences, Shahid Beheshti University of Medical Sciences, No. 23, Parvaneh Street, Velenjak, P.O. Box: 19395-4763, Tehran, Islamic Republic of Iran.
| | - F Azizi
- Endocrine Research Center, Research Institute for Endocrine Sciences, Shahid Beheshti University of Medical Sciences, No. 23, Parvaneh Street, Velenjak, P.O. Box: 19395-4763, Tehran, Islamic Republic of Iran
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14
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Zhong Y, McGuire FH, Duncan AE. Who is trying to lose weight? Trends and prevalence in past-year weight loss attempts among US adults 1999-2018 at the intersection of race/ethnicity, gender, and weight status. Eat Behav 2022; 47:101682. [PMID: 36413874 PMCID: PMC9973002 DOI: 10.1016/j.eatbeh.2022.101682] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/06/2022] [Revised: 10/25/2022] [Accepted: 11/02/2022] [Indexed: 11/06/2022]
Abstract
Common stereotypes of those who desire or attempt to lose weight often center on the experience of White, thin women. However, prior studies have neglected how systems of oppression at intersection of race/ethnicity, gender, and weight status may interact to place certain subpopulations at elevated risk. Repeated cross-sectional data from the National Health and Nutrition Examination Survey (NHANES) 1999-2018 (n = 53,528), a population-representative sample of US adults, were used to 1) assess trends in past-year weight loss attempts using the Kendall-Mann trend test stratifying by race/ethnicity, gender, and weight status, and 2) estimate the adjusted prevalence of weight loss attempts over the combined 20-year period for combinations of race/ethnicity, gender, and weight status using logistic regression. There were significant monotonic trends from 1999 to 2018 for non-Hispanic Black men (43.8% to 67.8%, FDR adjusted p = .022) with an obese BMI, but not for any other groups. After adjusting for covariates, weight loss attempt prevalence was positively associated with BMI category for all race/ethnicity-gender combinations, although the degree of association differed. These findings underscore the need to use an intersectional lens in weight-related research. Despite limited long-term beneficial health impact, certain population subgroups, particularly Black men with an obese BMI, are increasingly trying to lose weight.
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Affiliation(s)
- Yongqi Zhong
- Department of Epidemiology, Bloomberg School of Public Health, Johns Hopkins University, Baltimore, MD 21205, USA
| | - F Hunter McGuire
- The Brown School, Washington University in St. Louis, One Brookings Drive, Box 1196, St. Louis, MO 63130, USA
| | - Alexis E Duncan
- The Brown School, Washington University in St. Louis, One Brookings Drive, Box 1196, St. Louis, MO 63130, USA.
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15
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Dikyol Mutlu A, Cihan H, KÖKSAL Z. The perceived role of food and eating among turkish women with obesity: A qualitative analysis. Curr Psychol 2022; 42:1-12. [PMID: 36313584 PMCID: PMC9589573 DOI: 10.1007/s12144-022-03778-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/13/2022] [Indexed: 11/29/2022]
Abstract
The studies show the link between Body Mass Index (BMI) and higher food responsiveness despite negative physical, social, and psychological outcomes. The descriptive studies examining what makes individuals with higher BMI values more likely to respond to food are limited, while there is none in the Turkish sample. This study aims to understand the subjective relationship of women with obesity/overweight related to food in Turkish culture. Turkish adult women (aged 22-54) who have BMI higher than 25 (overweight/obesity) participated in semi-structured interviews focusing on how they relate to food and obesity. Participants were reached through Ankara Etlik Zübeyde Hanım Obstetrics and Gynecology Hospital Obesity outpatient service. Audio-recorded interviews were analyzed predominantly inductively by thematic analysis principles. Analysis of these interviews reflected three main themes: (1) the act of eating: "I don't know why I eat when I'm full", (2) being overweight: "I am the kind of person who constantly tries to lose weight", and (3) sources of distress. The results indicated the dynamic relationship between the desire to eat, chronic stress, perceived unavailability of close ones, and low sense of self-worth among adult women with obesity/overweight. The other indication is the effect of culture in shaping the relationship dynamics, the sources of distress, and the eating patterns in developing and maintaining obesity.
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Affiliation(s)
- Ayse Dikyol Mutlu
- Ankara Etlik Zubeyde Hanım Obstetrics Gynecology Hospital, Ankara, Turkey
| | - Hüdayar Cihan
- Faculty of Social Sciences, Department of Psychology, Ankara Yıldırım Beyazıt University, Ankara, Turkey
| | - Zuhal KÖKSAL
- Ankara Etlik Zubeyde Hanım Obstetrics Gynecology Hospital, Ankara, Turkey
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16
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Bays HE, Golden A, Tondt J. Thirty Obesity Myths, Misunderstandings, and/or Oversimplifications: An Obesity Medicine Association (OMA) Clinical Practice Statement (CPS) 2022. Obes Pillars 2022; 3:100034. [PMID: 37990730 PMCID: PMC10661978 DOI: 10.1016/j.obpill.2022.100034] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/03/2022] [Accepted: 08/03/2022] [Indexed: 11/23/2023]
Abstract
Background This Obesity Medicine Association (OMA) Clinical Practice Statement (CPS) is intended to provide clinicians an overview of 30 common obesity myths, misunderstandings, and/or oversimplifications. Methods The scientific support for this CPS is based upon published citations, clinical perspectives of OMA authors, and peer review by the Obesity Medicine Association leadership. Results This CPS discusses 30 common obesity myths, misunderstandings, and/or oversimplifications, utilizing referenced scientific publications such as the integrative use of other published OMA CPSs to help explain the applicable physiology/pathophysiology. Conclusions This Obesity Medicine Association (OMA) Clinical Practice Statement (CPS) on 30 common obesity myths, misunderstandings, and/or oversimplifications is one of a series of OMA CPSs designed to assist clinicians in the care of patients with the disease of obesity. Knowledge of the underlying science may assist the obesity medicine clinician improve the care of patients with obesity.
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Affiliation(s)
- Harold Edward Bays
- Louisville Metabolic and Atherosclerosis Research Center, University of Louisville School of Medicine, 3288, Illinois Avenue, Louisville, KY, 40213, USA
| | - Angela Golden
- NP Obesity Treatment Clinic, Flagstaff, AZ, 86001, USA
| | - Justin Tondt
- Department of Family and Community Medicine, Penn State Health, Penn State College of Medicine, 700 HMC Crescent Rd Hershey, PA, 17033, USA
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Mueller-Stierlin AS, Cornet S, Peisser A, Jaeckle S, Lehle J, Moerkl S, Teasdale SB. Implications of Dietary Intake and Eating Behaviors for People with Serious Mental Illness: A Qualitative Study. Nutrients 2022; 14:nu14132616. [PMID: 35807799 PMCID: PMC9268504 DOI: 10.3390/nu14132616] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2022] [Revised: 06/20/2022] [Accepted: 06/22/2022] [Indexed: 11/16/2022] Open
Abstract
The impact of poor diet quality and nutritional inadequacies on mental health and mental illness has recently gained considerable attention in science. As the opinions and experiences of people living with serious mental illness on dietary issues are unknown, we aimed to understand the role of nutrition in a biopsychosocial approach. In total, 28 semi-structured interviews were conducted with people living with serious mental illness (SMI) in Australia, Germany and Austria, and a generic thematic analysis approach was applied. Four positive (positive effects on the body and mind, therapeutic effects in treating somatic illnesses, pleasure and opportunity for self-efficacy) and three negative (impairment related to mental illness and its treatment, perceived stigma and negative effects on the body and mind) implications of diet were identified. A key issue for most of the participants was the mental burden arising from their body weight. This might indicate that negative implications, such as guilt and stigma, were of primary importance for people with SMI when talking about their dietary behavior. In conclusion, diet-related support is urgently needed for people with SMI. However, especially participants from Germany and Austria reported that this is not yet widely available in mental health settings, leading to hopelessness and resignation.
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Affiliation(s)
- Annabel S. Mueller-Stierlin
- Department of Psychiatry and Psychotherapy II, Ulm University, 89070 Ulm, Germany; (A.S.M.-S.); (S.C.); (S.J.); (J.L.)
| | - Sebastian Cornet
- Department of Psychiatry and Psychotherapy II, Ulm University, 89070 Ulm, Germany; (A.S.M.-S.); (S.C.); (S.J.); (J.L.)
| | - Anna Peisser
- Department of Psychiatry and Psychotherapeutic Medicine, Medical University of Graz, 8036 Graz, Austria;
| | - Selina Jaeckle
- Department of Psychiatry and Psychotherapy II, Ulm University, 89070 Ulm, Germany; (A.S.M.-S.); (S.C.); (S.J.); (J.L.)
| | - Jutta Lehle
- Department of Psychiatry and Psychotherapy II, Ulm University, 89070 Ulm, Germany; (A.S.M.-S.); (S.C.); (S.J.); (J.L.)
| | - Sabrina Moerkl
- Department of Psychiatry and Psychotherapeutic Medicine, Medical University of Graz, 8036 Graz, Austria;
- Correspondence:
| | - Scott B. Teasdale
- Discipline of Psychiatry and Mental Health, University of New South Wales (UNSW) Sydney, Sydney, NSW 2052, Australia;
- Mindgardens Neuroscience Network, Sydney, NSW 2052, Australia
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18
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Haakstad LAH, Stensrud T, Rugseth G, Gjestvang C. Weight Cycling and Dieting Behavior in Fitness Club Members. Front Endocrinol (Lausanne) 2022; 13:851887. [PMID: 35592787 PMCID: PMC9110839 DOI: 10.3389/fendo.2022.851887] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/11/2022] [Accepted: 04/05/2022] [Indexed: 11/13/2022] Open
Abstract
Background Along with the rising prevalence of high body-mass index (BMI), there is also increased emphasis on leanness and fitness. Both these trends suggest that many individuals are concerned about weight management and may try to lose weight. Using data from the research project "Fitness clubs - a venue for public health?", we aimed to describe weight cycling and energy-restricted dieting in men and women at start-up of fitness club membership, and to investigate influencing factors [age, BMI, educational level, self-classified overweight/obesity, compliance with nutritional guidelines, unhealthy weight control strategies and self-perceived health (SPH)]. Methods In a cross-sectional online survey, 250 men and women from 25 fitness clubs in Oslo, reported anthropometrics, self-classified weight group, weight cycling, weight loss/gain, eating habits/dieting, and background/health information. Enrollment was limited to adult (≥18 years) novice exercisers (exercising <60 min/week at a moderate or vigorous intensity or brisk walking <150 min/week, the past six months) with less than four weeks of membership. Factors associated with weight cycling were examined using simple and multiple logistic regression, separated for men and women. Results In both sexes (mean age: 36.4 ± 11.3, range 18-71 years), a high number reported substantial weight fluctuation (+/-5 kg) the past 12 months (men: 50% and women: 62%, mean difference 12%, 95% CI -0.3 to 23.8, p=0.056) and unhealthy weight control strategies (men: 24.8% and women: 47.2%, mean difference 22.4%, 95% CI 10.5 to 33.4, p<0.001). Weight cyclers had a higher mean BMI compared with non-cyclers (mean difference -1.5, 95% CI -2.6 to - 0.4, p= 0.003). Further, the difference in body weight was 6.7 kg (95% CI 2.2 to 10.8, p=0.004) and 10.8 kg (95% CI 5.8 to 15.8, <0.001) in men and women, respectively. Besides BMI status, self-classified overweight/obesity was the strongest predictor of reporting weight cycling (men: OR 5.54, 95% CI 2.03 to 15.12, p<0.01 and women: OR 7.17, 95% CI 2.48 to 20.68, p<0.001). Conclusion In novice exercisers, a large proportion reported weight cycling and unhealthy weight control strategies, and both were more prevalent in women than in men. Self-classified overweight was found to be the most important factor influencing weight cycling.
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Affiliation(s)
- Lene A. H. Haakstad
- Department of Sports Medicine, Norwegian School of Sports Sciences, Oslo, Norway
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19
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Mariam A, Miller‐Atkins G, Pantalone KM, Iyer N, Misra‐Hebert AD, Milinovich A, Bauman J, Mocarski M, Ramasamy A, Smolarz BG, Hobbs TM, Zimmerman RS, Burguera B, Kattan MW, Rotroff DM. Associations of weight loss with obesity-related comorbidities in a large integrated health system. Diabetes Obes Metab 2021; 23:2804-2813. [PMID: 34472680 PMCID: PMC9292723 DOI: 10.1111/dom.14538] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/19/2021] [Revised: 08/27/2021] [Accepted: 08/29/2021] [Indexed: 01/01/2023]
Abstract
AIMS To determine the health outcomes associated with weight loss in individuals with obesity, and to better understand the relationship between disease burden (disease burden; ie, prior comorbidities, healthcare utilization) and weight loss in individuals with obesity by analysing electronic health records (EHRs). MATERIALS AND METHODS We conducted a case-control study using deidentified EHR-derived information from 204 921 patients seen at the Cleveland Clinic between 2000 and 2018. Patients were aged ≥20 years with body mass index ≥30 kg/m2 and had ≥7 weight measurements, over ≥3 years. Thirty outcomes were investigated, including chronic and acute diseases, as well as psychological and metabolic disorders. Weight change was investigated 3, 5 and 10 years prior to an event. RESULTS Weight loss was associated with reduced incidence of many outcomes (eg, type 2 diabetes, nonalcoholic steatohepatitis/nonalcoholic fatty liver disease, obstructive sleep apnoea, hypertension; P < 0.05). Weight loss >10% was associated with increased incidence of certain outcomes including stroke and substance abuse. However, many outcomes that increased with weight loss were attenuated by disease burden adjustments. CONCLUSIONS This study provides the most comprehensive real-world evaluation of the health impacts of weight change to date. After comorbidity burden and healthcare utilization adjustments, weight loss was associated with an overall reduction in risk of many adverse outcomes.
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Affiliation(s)
- Arshiya Mariam
- Department of Quantitative Health SciencesLerner Research Institute, Cleveland ClinicClevelandOhioUSA
| | - Galen Miller‐Atkins
- Department of Quantitative Health SciencesLerner Research Institute, Cleveland ClinicClevelandOhioUSA
| | | | | | - Anita D. Misra‐Hebert
- Department of Quantitative Health SciencesLerner Research Institute, Cleveland ClinicClevelandOhioUSA
- Department of Internal Medicine, Cleveland Clinic Community CareCleveland ClinicClevelandOhioUSA
- Healthcare Delivery and Implementation Science CenterCleveland ClinicClevelandOhioUSA
| | - Alex Milinovich
- Department of Quantitative Health SciencesLerner Research Institute, Cleveland ClinicClevelandOhioUSA
| | - Janine Bauman
- Department of Quantitative Health SciencesLerner Research Institute, Cleveland ClinicClevelandOhioUSA
| | | | | | | | | | | | | | - Michael W. Kattan
- Department of Quantitative Health SciencesLerner Research Institute, Cleveland ClinicClevelandOhioUSA
| | - Daniel M. Rotroff
- Department of Quantitative Health SciencesLerner Research Institute, Cleveland ClinicClevelandOhioUSA
- Endocrinology and Metabolism InstituteCleveland ClinicClevelandOhioUSA
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Xu J, Zeng J, Yan Y, Xu F. Hypoxic Exercise Exacerbates Hypoxemia and Acute Mountain Sickness in Obesity: A Case Analysis. Int J Environ Res Public Health 2021; 18:9078. [PMID: 34501667 DOI: 10.3390/ijerph18179078] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/11/2021] [Revised: 08/14/2021] [Accepted: 08/23/2021] [Indexed: 12/21/2022]
Abstract
Acute mountain sickness (AMS) is a common syndrome characterized by headache, dizziness, loss of appetite, weakness, and nausea. As a major public health issue, obesity has increased in high altitude urban residents and intermittent commuters to high altitudes. The present study investigated acute hypoxic exposure and hypoxic exercise on hypoxemia severity and AMS symptoms in a physically active obese man. In this case analysis, peripheral oxygen saturation (SpO2) was used to evaluate hypoxemia, heart rate (HR) and blood pressure (BP) were used to reflect the function of autonomic nervous system (ANS), and Lake Louise scoring (LLS) was used to assess AMS. The results showed that acute hypoxic exposure led to severe hypoxemia (SpO2 = 72%) and tachycardia (HRrest = 97 bpm), and acute hypoxic exercise exacerbated severe hypoxemia (SpO2 = 59%) and ANS dysfunction (HRpeak = 167 bpm, SBP/DBP = 210/97 mmHg). At the end of the 6-h acute hypoxic exposure, the case developed severe AMS (LLS = 10) symptoms of headache, gastrointestinal distress, cyanosis, vomiting, poor appetite, and fatigue. The findings of the case study suggest that high physical activity level appears did not show a reliable protective effect against severe hypoxemia, ANS dysfunction, and severe AMS symptoms in acute hypoxia exposure and hypoxia exercise.
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21
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de Souza AMA, Ecelbarger CM, Sandberg K. Caloric Restriction and Cardiovascular Health: the Good, the Bad, and the Renin-Angiotensin System. Physiology (Bethesda) 2021; 36:220-234. [PMID: 34159807 DOI: 10.1152/physiol.00002.2021] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
Much excitement exists over the cardioprotective and life-extending effects of caloric restriction (CR). This review integrates population studies with experimental animal research to address the positive and negative impact of mild and severe CR on cardiovascular physiology and pathophysiology, with a particular focus on the renin-angiotensin system (RAS). We also highlight the gaps in knowledge and areas ripe for future physiological research.
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Affiliation(s)
- Aline M A de Souza
- Division of Nephrology and Hypertension, Department of Medicine, Georgetown University, Washington, District of Columbia
| | - Carolyn M Ecelbarger
- Division of Nephrology and Hypertension, Department of Medicine, Georgetown University, Washington, District of Columbia
| | - Kathryn Sandberg
- Division of Nephrology and Hypertension, Department of Medicine, Georgetown University, Washington, District of Columbia
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22
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Jeong S, Choi S, Chang J, Kim K, Kim SM, Hwang SY, Son JS, Lee G, Park SM. Association of weight fluctuation with cardiovascular disease risk among initially obese adults. Sci Rep 2021; 11:10152. [PMID: 33980955 DOI: 10.1038/s41598-021-89666-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2020] [Accepted: 04/27/2021] [Indexed: 12/02/2022] Open
Abstract
The association of fluctuations in body mass index with cardiovascular risk in long-term is not well understood. This study aimed to investigate cardiovascular outcomes of weight fluctuation. Total of 67,101 obese adults from the Korean National Health Insurance Service who received health examinations in three separate biennial periods were included. Participants were followed up from January 1, 2008 to the date of cardiovascular disease, death, or December 31, 2015, and categorized into 9 distinctive groups according to the BMI. Continuous weight gain showed an increased risk of overall cardiovascular disease (hazard ratio [HR], 2.36; P = 0.007), whereas weight loss after weight maintenance (HR, 0.91; P = 0.016) and weight maintenance after weight loss (HR, 0.91; P = 0.004) were ameliorative compared to the no weight change group. As for coronary heart disease, weight maintenance after weight gain was unfavorable (HR, 1.25; P = 0.004) while weight loss after weight maintenance (HR, 0.82; P < 0.001), weight cycling (HR, 0.83; P = 0.043), and weight maintenance after weight loss (HR, 0.88; P = 0.012) were beneficial. Weight maintenance after weight loss is beneficial for obese adults in terms of cardiovascular risks. In addition, weight loss is in part related to reduced risk of coronary heart disease despite weight cycling.
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Hu EA, Pasupuleti M, Nguyen V, Langheier J, Shurney D. Sustaining weight loss among adults with obesity using a digital meal planning and food purchasing platform for 12, 24, and 36 months: a longitudinal study. Nutr J 2021; 20:8. [PMID: 33478516 PMCID: PMC7818217 DOI: 10.1186/s12937-021-00666-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2020] [Accepted: 01/17/2021] [Indexed: 12/22/2022] Open
Abstract
Background Previous studies have shown that lifestyle changes, such as diet and exercise, can lead to weight loss, resulting in dramatic improvements in overall health and chronic disease risk. However, while many traditional dieting, food tracking and weight loss coaching programs result in short-term weight loss, there is less evidence of their effectiveness on sustaining weight loss over time. Methods We conducted a retrospective analysis of 1,740 adults with obesity who used Foodsmart, a digital personalized dietary assessment, meal planning and food purchasing platform. Participants reported age, gender, at least three measures of weight, and their diet using a food frequency questionnaire. We defined sustained weight loss as participants who lost 5 % of initial weight between their first and second reported weights and lost weight or maintained weight between second and third reported weights. A healthy eating score, Nutriscore, was calculated to assess overall diet quality. We used multivariate logistic regression models to examine the association between user characteristics and odds of sustained weight loss. Results Over a median of 25 months, the mean (standard deviation) change in weight among participants was − 6.2 (19.8) pounds. In total, 39.3 % (684/1,740) of participants lost at least 5 % of their initial weight, and 22.4 % percent (389/1,740) of participants sustained weight loss. In the fully-adjusted logistic regression model, we found that obesity class 2 (odds ratio, OR: 1.69, 95 % confidence interval, CI: 1.27–2.24, P < 0.001), obesity class 3 (OR: 2.23, 95 % CI: 1.68–2.97, P < 0.001), baseline diet quality (OR: 1.06, 95 % CI: 1.02–1.09, P < 0.001), and greater change in diet quality (OR: 1.10, 95 % CI: 1.07–1.14, P < 0.001) were significantly associated with sustained weight loss. Conclusions This study characterized and demonstrated the utility of Foodsmart, a digital platform that gives personalized nutrition recommendations and meal planning tools, in sustained weight reduction among users with obesity.
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Affiliation(s)
- Emily A Hu
- Zipongo, Inc, DBA Foodsmart, 595 Pacific Ave, 4th Floor, San Francisco, CA, 94133, USA.
| | - Mahesh Pasupuleti
- Zipongo, Inc, DBA Foodsmart, 595 Pacific Ave, 4th Floor, San Francisco, CA, 94133, USA
| | - Viet Nguyen
- Zipongo, Inc, DBA Foodsmart, 595 Pacific Ave, 4th Floor, San Francisco, CA, 94133, USA
| | - Jason Langheier
- Zipongo, Inc, DBA Foodsmart, 595 Pacific Ave, 4th Floor, San Francisco, CA, 94133, USA
| | - Dexter Shurney
- Adventist Health, 1 Adventist Health Way, Roseville, CA, 95661, USA
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LaCaille RA, Hooker SA, LaCaille LJ. Using self-determination theory to understand eating behaviors and weight change in emerging adults. Eat Behav 2020; 39:101433. [PMID: 32961470 DOI: 10.1016/j.eatbeh.2020.101433] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/07/2020] [Revised: 09/03/2020] [Accepted: 09/04/2020] [Indexed: 10/23/2022]
Abstract
INTRODUCTION College may be a time when emerging adults establish eating patterns that influence future weight trajectories. Self-determination theory (SDT) suggests that satisfaction of basic psychological needs (autonomy, competence, relatedness) supports autonomous regulation of behavior, which is associated with healthier behaviors. When needs are frustrated, individuals feel as though their behaviors are controlled by others, which is associated with unhealthy behaviors. This study used SDT to examine a model for associated body satisfaction, eating/weight control behaviors, and weight change. METHODS Using a cross-sectional design, undergraduates (N = 875; 57% women; AgeM = 20 ± 1.4 yrs.; BMIM = 24.3 ± 4.4) completed measures of need satisfaction and frustration, behavioral regulation of healthy weight, body satisfaction, eating/weight control behaviors, and weight change in their first semester of college. RESULTS Structural equation modeling showed that need satisfaction was positively associated with greater autonomous regulation, which was positively associated with greater body satisfaction and fruit/vegetable intake. Conversely, greater need frustration was associated with greater controlled regulation, which was associated with lower body satisfaction. Participants who had greater body satisfaction engaged in fewer unhealthy weight control behaviors. Engaging in more unhealthy behaviors was associated with greater weight gain during the first semester of college, whereas fruit and vegetable intake was not associated with weight change. The associations were stronger for women than men, particularly for the relationships between body satisfaction and unhealthy weight control behaviors and increased weight gain. CONCLUSIONS The model was generally supported, suggesting that psychological need satisfaction and autonomous motivation in college students may facilitate greater body satisfaction and healthier eating behaviors. Future longitudinal research is needed to clarify the factors that influence health behaviors and weight gain in college students.
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Affiliation(s)
- Rick A LaCaille
- Department of Psychology, University of Minnesota Duluth, United States of America.
| | | | - Lara J LaCaille
- Department of Psychology, University of Minnesota Duluth, United States of America
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Hu EA, Nguyen V, Langheier J, Shurney D. Weight Reduction Through a Digital Nutrition and Food Purchasing Platform Among Users With Obesity: Longitudinal Study. J Med Internet Res 2020; 22:e19634. [PMID: 32792332 PMCID: PMC7495263 DOI: 10.2196/19634] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2020] [Revised: 06/17/2020] [Accepted: 08/13/2020] [Indexed: 01/14/2023] Open
Abstract
Background Digital nutrition apps that monitor or provide recommendations on diet have been found to be effective in behavior change and weight reduction among individuals with obesity. However, there is less evidence on how integration of personalized nutrition recommendations and changing the food purchasing environment through online meal planning and grocery delivery, meal kits, and grocery incentives impacts weight loss among individuals with obesity. Objective The objective of this observational longitudinal study was to examine weight loss and predictors of weight loss among individuals with obesity who are users of a digital nutrition platform that integrates tools to provide nutrition recommendations and changes in the food purchasing environment grounded in behavioral theory. Methods We included 8977 adults with obesity who used the digital Foodsmart platform, created by Zipongo, Inc, DBA Foodsmart between January 2013 and April 2020. We retrospectively analyzed user characteristics and their associations with weight loss. Participants reported age, gender, height, at least 2 measures of weight, and usual dietary intake. Healthy Diet Score, a score to measure overall diet quality, was calculated based on responses to a food frequency questionnaire. We used paired t tests to compare differences in baseline and final weights and baseline and final Healthy Diet Scores. We used univariate and multivariate logistic regression models to estimate odds ratios and 95% CI of achieving 5% weight loss by gender, age, baseline BMI, Healthy Diet Score, change in Healthy Diet Score, and duration of enrollment. We conducted stratified analyses to examine mean percent weight change by enrollment duration and gender, age, baseline BMI, and change in Healthy Diet Score. Results Over a median (IQR) of 9.9 (0.03-54.7) months of enrollment, 59% of participants lost weight. Of the participants who used the Foodsmart platform for at least 24 months, 33.3% achieved 5% weight loss. In the fully adjusted logistic regression model, we found that baseline BMI (OR 1.02, 95% CI 1.02-1.03; P<.001), baseline Healthy Diet Score (OR 1.06, 95% CI 1.05-1.08; P<.001), greater change in Healthy Diet Score (OR 1.12, 95% CI 1.11-1.14; P<.001), and enrollment length (OR 1.28, 95% CI 1.23-1.32; P<.001) were all significantly associated with higher odds of achieving at least 5% weight loss. Conclusions This study found that a digital app that provides personalized nutrition recommendations and change in one’s food purchasing environment appears to be successful in meaningfully reducing weight among individuals with obesity.
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Affiliation(s)
- Emily A Hu
- Zipongo, Inc, DBA Foodsmart, San Francisco, CA, United States.,Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, United States
| | - Viet Nguyen
- Zipongo, Inc, DBA Foodsmart, San Francisco, CA, United States
| | - Jason Langheier
- Zipongo, Inc, DBA Foodsmart, San Francisco, CA, United States
| | - Dexter Shurney
- Zipongo, Inc, DBA Foodsmart, San Francisco, CA, United States.,American College of Lifestyle Medicine, Chesterfield, MO, United States
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26
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Cullen AE, Centner AM, Deitado R, Salazar JFA. The Impact of Dietary Supplementation of Whole Foods and Polyphenols on Atherosclerosis. Nutrients 2020; 12:E2069. [PMID: 32664664 DOI: 10.3390/nu12072069] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2020] [Revised: 07/01/2020] [Accepted: 07/09/2020] [Indexed: 12/16/2022] Open
Abstract
The purpose of this review is to highlight current research on the benefits of supplementation with foods with a diverse polyphenol composition, including fruits, vegetables, nuts, grains, oils, spices, and teas in blunting atherosclerosis. We searched PubMed for publications utilizing whole food or polyphenols prepared from whole foods in Apolipoprotein E (ApoE) or Low-Density Lipoprotein Receptor (LDLR) knockout mice, and identified 73 studies in which plaque was measured. The majority of the studies reported a reduction in plaque. Nine interventions showed no effect, while three using Agaricus blazei mushroom, HYJA-ri-4 rice variety, and safrole-2', 3'-oxide (SFO) increased plaque. The mechanisms by which atherosclerosis was reduced include improved lipid profile, antioxidant status, and cholesterol clearance, and reduced inflammation. Importantly, not all dietary interventions that reduce plaque showed an improvement in lipid profile. Additionally, we found that, out of 73 studies, only 9 used female mice and only 6 compared both sexes. Only one study compared the two models (LDLR vs. ApoE), showing that the treatment worked in one but not the other. Not all supplementations work in both male and female animals, suggesting that increasing the variety of foods with different polyphenol compositions may be more effective in mitigating atherosclerosis.
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Abstract
In the 21st century, the ancient mind-body practice of yoga has surged in popularity among western enthusiasts for its numerous health benefits. Particularly, a growing evidence base supports yoga for cultivating positive embodiment and reducing risk for disordered eating. Nevertheless, amidst its rise are concerns about yoga's departure from its spiritual foundations and increasing assimilation into the appearance- and commercial-driven exercise and fitness culture. Consequently, an exclusionary identity has been perpetuated in shaping norms surrounding who can and does practice yoga, which contradicts earlier egalitarian visions of a yoga for all. Therefore, we adopt a social justice lens in offering a focused analysis of the intersection of yoga, embodiment, and inclusion for select marginalized social identities typically underrepresented among yoga practitioners and in yoga scholarship. Data are synthesized from both qualitative and quantitative sources and integrate an understanding of how confined media representations of "the yoga body" and other practical constraints may undermine the perceived access to the practice for members of diverse groups. We conclude with inviting future considerations towards fostering more interdisciplinary community-based research partnerships among the variety of stakeholders invested in advancing the accessibility and inclusion of yoga and positive embodiment for all bodies.
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Affiliation(s)
- Jennifer B Webb
- UNC Charlotte Department of Psychological Science , Charlotte, NC, USA.,UNC Charlotte Health Psychology Ph.D. Program , Charlotte, NC, USA
| | - Courtney B Rogers
- UNC Charlotte Department of Psychological Science , Charlotte, NC, USA.,UNC Charlotte Health Psychology Ph.D. Program , Charlotte, NC, USA
| | - Erin Vinoski Thomas
- Georgia State University School of Public Health, Center for Leadership in Disability , Atlanta, GA, USA
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Horne J, Gilliland J, Madill J. Assessing the effectiveness of actionable nutrigenomics and lifestyle genomics interventions for weight management in clinical practice: A critical, scoping review with directions for future research. Nutr Health 2020; 26:167-173. [PMID: 32500817 DOI: 10.1177/0260106020928667] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
BACKGROUND The use of nutrigenomics and lifestyle genomics in clinical practice has the potential to optimize weight-related outcomes for patients. AIM A scoping review was conducted to summarize and evaluate the current body of knowledge related to the effectiveness of providing DNA-based lifestyle advice on weight-related outcomes, with the aim of providing direction for future research. METHOD Primary studies were included if they were written in English, evaluated weight-related and/or body mass index and/or body composition outcomes, and provided participants with an actionable genetic-based lifestyle intervention; interventions that only provided information on genetic risk for diseases/conditions were excluded. Data was extracted from each article meeting inclusion criteria (N=3) and the studies were critically appraised for methodological limitations. RESULTS Research in this area is promising, but limited. Specific limitations relate to study designs, the nature of the recommendations provided to participants, small (underpowered) sample sizes, the use of self-reported weight/BMI data and lack of consideration of important confounding factors. CONCLUSIONS Therefore, the effectiveness of nutrigenomics and lifestyle genomics interventions for weight management in clinical practice cannot yet be conclusively determined. Recommendations for future research are detailed in the present manuscript.
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Affiliation(s)
- Justine Horne
- Health and Rehabilitation Sciences, The University of Western Ontario, London,.ON, Canada.,The East Elgin Family Health Team, Aylmer, ON, Canada.,Human Environments Analysis Laboratory, The University of Western Ontario, London, ON, Canada
| | - Jason Gilliland
- Human Environments Analysis Laboratory, The University of Western Ontario, London, ON, Canada.,Department of Geography, Western University, London, ON, Canada.,Human Environments Analysis Laboratory, Western University, London, ON, Canada.,School of Health Studies, Western University, London, ON, Canada.,Department of Paediatrics, Western University, London, ON, Canada.,Department of Epidemiology and Biostatistics, Western University, London, ON, Canada.,Children's Health Research Institute, London, ON, Canada.,Lawson Health Research Institute, London, ON, Canada
| | - Janet Madill
- Human Environments Analysis Laboratory, Western University, London, ON, Canada.,School of Food and Nutritional Sciences, Brescia University College at Western University, London, ON, Canada
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Abstract
Innumerable studies have suggested "the lower, the better" for cardiovascular risk factors, such as body weight, lipid profile, blood pressure, and blood glucose, in terms of health outcomes. However, excessively low levels of these parameters cause health problems, as seen in cachexia, hypoglycemia, and hypotension. Body weight fluctuation is related to mortality, diabetes, obesity, cardiovascular disease, and cancer, although contradictory findings have been reported. High lipid variability is associated with increased mortality and elevated risks of cardiovascular disease, diabetes, end-stage renal disease, and dementia. High blood pressure variability is associated with increased mortality, myocardial infarction, hospitalization, and dementia, which may be caused by hypotension. Furthermore, high glucose variability, which can be measured by continuous glucose monitoring systems or self-monitoring of blood glucose levels, is associated with increased mortality, microvascular and macrovascular complications of diabetes, and hypoglycemic events, leading to hospitalization. Variability in metabolic parameters could be affected by medications, such as statins, antihypertensives, and hypoglycemic agents, and changes in lifestyle patterns. However, other mechanisms modify the relationships between biological variability and various health outcomes. In this study, we review recent evidence regarding the role of variability in metabolic parameters and discuss the clinical implications of these findings.
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Affiliation(s)
- Seung-Hwan Lee
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Seoul St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul,
Korea
| | - Mee Kyoung Kim
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Yeouido St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul,
Korea
| | - Eun-Jung Rhee
- Department of Endocrinology and Metabolism, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul,
Korea
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30
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Caslin HL, Bhanot M, Bolus WR, Hasty AH. Adipose tissue macrophages: Unique polarization and bioenergetics in obesity. Immunol Rev 2020; 295:101-113. [PMID: 32237081 DOI: 10.1111/imr.12853] [Citation(s) in RCA: 54] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2020] [Revised: 02/25/2020] [Accepted: 02/28/2020] [Indexed: 12/13/2022]
Abstract
Macrophages comprise a majority of the resident immune cells in adipose tissue (AT) and regulate both tissue homeostasis in the lean state and metabolic dysregulation in obesity. Since the AT environment rapidly changes based upon systemic energy status, AT macrophages (ATMs) must adapt phenotypically and metabolically. There is a distinct dichotomy in the polarization and bioenergetics of in vitro models, with M2 macrophages utilizing oxidative phosphorylation (OX PHOS) and M1 macrophages utilizing glycolysis. Early studies suggested differential polarization of ATMs, with M2-like macrophages predominant in lean AT and M1-like macrophages in obese AT. However, recent studies show that the phenotypic plasticity of ATMs is far more complicated, which is also reflected in their bioenergetics. Multiple ATM populations exist along the M2 to M1 continuum and appear to utilize both glycolysis and OX PHOS in obesity. The significance of the dual fuel bioenergetics is unclear and may be related to an intermediate polarization, their buffering capacity, or the result of a mixed population of distinct polarized ATMs. Recent evidence also suggests that ATMs of lean mice serve as a substrate buffer or reservoir to modulate lipid, catecholamine, and iron availability. Furthermore, recent models of weight loss and weight cycling reveal additional roles for ATMs in systemic metabolism. Evaluating ATM phenotype and intracellular metabolism together may more accurately illuminate the consequences of ATM accumulation in obese AT, lending further insight into obesity-related comorbidities in humans.
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Affiliation(s)
- Heather L Caslin
- Department of Molecular Physiology and Biophysics, Vanderbilt University School of Medicine, Nashville, TN, USA
| | - Monica Bhanot
- Division of Diabetes, Endocrinology and Metabolism, Vanderbilt Medical Center, Nashville, TN, USA
| | - W Reid Bolus
- Diabetes Center, University of California San Francisco, San Francisco, CA, USA
| | - Alyssa H Hasty
- Department of Molecular Physiology and Biophysics, Vanderbilt University School of Medicine, Nashville, TN, USA.,VA Tennessee Valley Healthcare System, Nashville, TN, USA
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31
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Zhang X, Rhoades J, Caan BJ, Cohn DE, Salani R, Noria S, Suarez AA, Paskett ED, Felix AS. Intentional weight loss, weight cycling, and endometrial cancer risk: a systematic review and meta-analysis. Int J Gynecol Cancer 2019; 29:1361-1371. [PMID: 31451560 DOI: 10.1136/ijgc-2019-000728] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2019] [Revised: 08/01/2019] [Accepted: 08/05/2019] [Indexed: 12/11/2022] Open
Abstract
PURPOSE Weight cycling, defined as intentional weight loss followed by unintentional weight regain, may attenuate the benefit of intentional weight loss on endometrial cancer risk. We summarized the literature on intentional weight loss, weight cycling after intentional weight loss, bariatric surgery, and endometrial cancer risk. METHODS A systematic search was conducted using MEDLINE, Embase, and Cochrane Central Register of Controlled Trials databases published between January 2000 and November 2018. We followed Preferred Reporting Items of Systematic Reviews and Meta-analysis (PRISMA) guidelines. We qualitatively summarized studies related to intentional weight loss and weight cycling due to the inconsistent definition, and quantitatively summarized studies when bariatric surgery was the mechanism of intentional weight loss. RESULTS A total of 127 full-text articles were reviewed, and 13 were included (bariatric surgery n=7, self-reported intentional weight loss n=2, self-reported weight cycling n=4). Qualitative synthesis suggested that, compared with stable weight, self-reported intentional weight loss was associated with lower endometrial cancer risk (RR range 0.61-0.96), whereas self-reported weight cycling was associated with higher endometrial cancer risk (OR range 1.07-2.33). The meta-analysis yielded a 59% lower risk of endometrial cancer following bariatric surgery (OR 0.41, 95% CI 0.22 to 0.74). CONCLUSIONS Our findings support the notion that intentional weight loss and maintenance of a stable, healthy weight can lower endometrial cancer risk. Strategies to improve awareness and maintenance of weight loss among women with obesity are needed to reduce endometrial cancer risk.
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Affiliation(s)
- Xiaochen Zhang
- Division of Population Sciences, The Ohio State University Comprehensive Cancer Center, Columbus, Ohio, USA.,Division of Epidemiology, The Ohio State University College of Public Health, Columbus, OH, USA
| | - Jennifer Rhoades
- Division of Epidemiology, The Ohio State University College of Public Health, Columbus, OH, USA
| | - Bette J Caan
- Division of Research, Kaiser Permanente Northern California, Oakland, California, USA
| | - David E Cohn
- Division of Gynecologic Oncology, Ohio State University Wexner Medical Center, Columbus, Ohio, USA
| | - Ritu Salani
- Division of Gynecologic Oncology, Ohio State University Wexner Medical Center, Columbus, Ohio, USA
| | - Sabrena Noria
- Center for Minimally Invasive Surgery, Division of General and Gastrointestinal Surgery, Department of Surgery, The Ohio State University Wexner Medical Center, Columbus, OH, USA
| | - Adrian A Suarez
- Department of Pathology, The Ohio State University Wexner Medical Center, Columbus, Ohio, USA
| | - Electra D Paskett
- Division of Population Sciences, The Ohio State University Comprehensive Cancer Center, Columbus, Ohio, USA.,Division of Epidemiology, The Ohio State University College of Public Health, Columbus, OH, USA
| | - Ashley S Felix
- Division of Epidemiology, The Ohio State University College of Public Health, Columbus, OH, USA
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Park HY, Kim J, Park MY, Chung N, Hwang H, Nam SS, Lim K. Exposure and Exercise Training in Hypoxic Conditions as a New Obesity Therapeutic Modality: A Mini Review. J Obes Metab Syndr 2018; 27:93-101. [PMID: 31089548 PMCID: PMC6489458 DOI: 10.7570/jomes.2018.27.2.93] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/26/2018] [Revised: 05/08/2018] [Accepted: 05/16/2018] [Indexed: 01/15/2023] Open
Abstract
Obesity is an important health problem caused by positive energy balance. Generally, low calorie dietary intake combined with regular exercise is the most common modality to lose bodily fat in obese people. Although this is the first modality of choice for obesity treatment, it needs to be applied to obese patients for at least 12 weeks or more and it does not provide consistent results because it is difficult to suppress increased appetite due to exercise. Recently, many researchers have been applying hypoxic conditions for the treatment of obesity, as many studies show that people residing in high altitudes have a lower percentage of body fat and fewer obesity-related illnesses than people living at sea level. Hypoxic therapy treatment, including hypoxic exposure or hypoxic exercise training, is recommended as a way to treat and prevent obesity by suppression of appetite, increasing basal metabolic rate and fat oxidation, and minimizing side effects. Hypoxic therapy inhibits energy intake and appetite-related hormones, and enhances various cardiovascular and metabolic function parameters. These observations indicate that hypoxic therapy is a new treatment modality for inducing fat reduction and promoting metabolic and cardiovascular health, which may be an important and necessary strategy for the treatment of obesity. As such, hypoxic therapy is now used as a general medical practice for obesity treatment in many developed countries. Therefore, hypoxic therapy could be a new, practical, and useful therapeutic modality for obesity and obesity-related comorbidities.
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Affiliation(s)
- Hun-Young Park
- Physical Activity and Performance Institute (PAPI), Konkuk University, Seoul, Korea
| | - Jisu Kim
- Physical Activity and Performance Institute (PAPI), Konkuk University, Seoul, Korea
| | - Mi-Young Park
- Physical Activity and Performance Institute (PAPI), Konkuk University, Seoul, Korea
| | - Nana Chung
- Physical Activity and Performance Institute (PAPI), Konkuk University, Seoul, Korea
| | - Hyejung Hwang
- Physical Activity and Performance Institute (PAPI), Konkuk University, Seoul, Korea
| | - Sang-Seok Nam
- Physical Activity and Performance Institute (PAPI), Konkuk University, Seoul, Korea
| | - Kiwon Lim
- Physical Activity and Performance Institute (PAPI), Konkuk University, Seoul, Korea.,Laboratory of Exercise Nutrition, Department of Physical Education, Konkuk University, Seoul, Korea
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