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Sandoval C, Santibañez S, Villagrán F. Effectiveness of intermittent fasting to potentiate weight loss or muscle gains in humans younger than 60 years old: a systematic review. Int J Food Sci Nutr 2021; 72:734-745. [PMID: 33397167 DOI: 10.1080/09637486.2020.1868412] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
The aim was to determinate if the intermittent fasting enhances weight loss or muscle gains in humans younger than 60 years old. Multiple databases were searched up to May 2020 for studies in English, using MeSH terms and text words relating intermittent fasting, weight loss and muscle gains. The protocol was registered in PROSPERO. Study quality was assessed using NICE methodology. A total of 10 original articles were evaluated. Eight papers collected data through randomised controlled trials and two from cross-sectional study. Intermittent fasting could be beneficial in resistance trained subjects or in overweight individuals to improve body composition by decreasing fat mass and at least maintain muscle mass; decrease in GLP-1 levels and; improving health-related biomarkers such glucose and insulin levels. However, future studies are needed in order to better elucidate the effect of intermittent fasting on body composition.
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Affiliation(s)
- Cristian Sandoval
- Department of Preclinical Sciences, Faculty of Medicine, Universidad de La Frontera, Temuco, Chile
| | - Sybella Santibañez
- Undergraduate Program of Nutrition and Diet, Faculty of Sciences, Universidad Mayor, Temuco, Chile
| | - Francisca Villagrán
- Doctoral Program in Morphological Sciences, Faculty of Medicine, Universidad de La Frontera, Temuco, Chile
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152
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Vilarrasa N, San Jose P, Rubio MÁ, Lecube A. Obesity in Patients with Type 1 Diabetes: Links, Risks and Management Challenges. Diabetes Metab Syndr Obes 2021; 14:2807-2827. [PMID: 34188505 PMCID: PMC8232956 DOI: 10.2147/dmso.s223618] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/19/2021] [Accepted: 05/19/2021] [Indexed: 12/15/2022] Open
Abstract
Obesity affects large numbers of patients with type 1 diabetes (T1D) across their lifetime, with rates ranging between 2.8% and 37.1%. Patients with T1D and obesity are characterized by the presence of insulin resistance, of high insulin requirements, have a greater cardiometabolic risk and an enhanced risk of developing chronic complications when compared to normal-weight persons with T1D. Dual treatment of obesity and T1D is challenging and no specific guidelines for improving outcomes of both glycemic control and weight management have been established for this population. Nevertheless, although evidence is scarce, a comprehensive approach based on a balanced hypocaloric diet, physical activity and cognitive behavioral therapy by a multidisciplinary team, expert in both obesity and diabetes, remains as the best clinical practice. However, weight loss responses with lifestyle changes alone are limited, so in the "roadmap" of the treatment of obesity in T1D, it will be helpful to include anti-obesity pharmacotherapy despite at present there is a lack of evidence since T1D patients have been excluded from anti-obesity drug clinical trials. In case of severe obesity, bariatric surgery has proven to be of benefit in obtaining a substantial and long-term weight loss and reduction in cardiovascular risk. The near future looks promising with the development of new and more effective anti-obesity treatments and strategies to improve insulin resistance and oxidative stress. Advances in precision medicine may help individualize and optimize the medical management and care of these patients. This review, by gathering current evidence, highlights the need of solid knowledge in all facets of the treatment of patients with obesity and T1D that can only be obtained through high quality well-designed studies.
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Affiliation(s)
- Nuria Vilarrasa
- Department of Endocrinology and Nutrition, Hospital Universitario de Bellvitge-IDIBELL, Barcelona, Spain
- CIBERDEM-CIBER de Diabetes y Enfermedades Metabólicas Asociadas, Instituto de Salud Carlos III, Madrid, Spain
- Correspondence: Nuria Vilarrasa Hospital Universitario de Bellvitge-IDIBELL, C/Feixa Llarga s/n, 08907 L´Hospitalet de Llobregat, Barcelona, SpainTel +34 93-5338511Fax +34 933375248 Email
| | - Patricia San Jose
- Department of Endocrinology and Nutrition, Hospital Universitario de Bellvitge-IDIBELL, Barcelona, Spain
| | - Miguel Ángel Rubio
- Department of Endocrinology & Nutrition, Hospital Clínico San Carlos, IDISSC, Madrid, 28040, Spain
| | - Albert Lecube
- CIBERDEM-CIBER de Diabetes y Enfermedades Metabólicas Asociadas, Instituto de Salud Carlos III, Madrid, Spain
- Endocrinology and Nutrition Department, Hospital Universitari Arnau de Vilanova, Lleida, 25198, Spain
- Obesity, Diabetes and Metabolism (ODIM) Research Group, Institut de Recerca Biomèdica de Lleida (IRBLleida), University of Lleida, Lleida, Spain
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153
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Aron-Wisnewsky J, Warmbrunn MV, Nieuwdorp M, Clément K. Metabolism and Metabolic Disorders and the Microbiome: The Intestinal Microbiota Associated With Obesity, Lipid Metabolism, and Metabolic Health-Pathophysiology and Therapeutic Strategies. Gastroenterology 2021; 160:573-599. [PMID: 33253685 DOI: 10.1053/j.gastro.2020.10.057] [Citation(s) in RCA: 153] [Impact Index Per Article: 51.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/19/2020] [Revised: 10/26/2020] [Accepted: 10/26/2020] [Indexed: 12/12/2022]
Abstract
Changes in the intestinal microbiome have been associated with obesity and type 2 diabetes, in epidemiological studies and studies of the effects of fecal transfer in germ-free mice. We review the mechanisms by which alterations in the intestinal microbiome contribute to development of metabolic diseases, and recent advances, such as the effects of the microbiome on lipid metabolism. Strategies have been developed to modify the intestinal microbiome and reverse metabolic alterations, which might be used as therapies. We discuss approaches that have shown effects in mouse models of obesity and metabolic disorders, and how these might be translated to humans to improve metabolic health.
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Affiliation(s)
- Judith Aron-Wisnewsky
- Nutrition and Obesities: Systemic Approaches Research Unit (Nutriomics), Sorbonne Université, Institut National de la Santé et de la Recherche Médicale, Paris, France; Nutrition Department, Assistante Publique Hôpitaux de Paris, Pitié-Salpêtrière Hospital, Centres de Recherche en Nutrition Humaine Ile de France, Paris, France; Department of Vascular Medicine, Amsterdam Universitair Medische Centra, location Academisch Medisch Centrum, and VUMC, University of Amsterdam, Amsterdam, the Netherlands.
| | - Moritz V Warmbrunn
- Department of Vascular Medicine, Amsterdam Universitair Medische Centra, location Academisch Medisch Centrum, and VUMC, University of Amsterdam, Amsterdam, the Netherlands
| | - Max Nieuwdorp
- Department of Vascular Medicine, Amsterdam Universitair Medische Centra, location Academisch Medisch Centrum, and VUMC, University of Amsterdam, Amsterdam, the Netherlands
| | - Karine Clément
- Nutrition and Obesities: Systemic Approaches Research Unit (Nutriomics), Sorbonne Université, Institut National de la Santé et de la Recherche Médicale, Paris, France; Nutrition Department, Assistante Publique Hôpitaux de Paris, Pitié-Salpêtrière Hospital, Centres de Recherche en Nutrition Humaine Ile de France, Paris, France.
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154
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Moser O, Eckstein ML, Mueller A, Tripolt NJ, Yildirim H, Abbas F, Pferschy PN, Goswami N, Aberer F, Obermayer A, Pieber TR, Kojzar H, Sourij C, Brunner M, Niedrist T, Herrmann M, Sourij H. Impact of a Single 36 Hours Prolonged Fasting Period in Adults With Type 1 Diabetes - A Cross-Over Controlled Trial. Front Endocrinol (Lausanne) 2021; 12:656346. [PMID: 34295305 PMCID: PMC8292020 DOI: 10.3389/fendo.2021.656346] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/20/2021] [Accepted: 06/21/2021] [Indexed: 12/16/2022] Open
Abstract
UNLABELLED Prolonged fasting has shown beneficial effects in healthy individuals and in people with chronic diseases. In type 1 diabetes, the effect or even the feasibility of fasting is unclear. We aimed to assess the impact and safety of prolonged fasting in adults with type 1 diabetes. Glycemia was assessed during overnight fasting (12 hours) vs. prolonged fasting (36 hours) via an intermittently-scanned continuous glucose monitoring system. Anthropometric data, metabolic and hormonal markers were compared between both trial arms. After each fasting period, a 75 g oral glucose tolerance test was performed and plasma glucose levels and hormones were assessed. Data were compared via paired t-tests and mixed-model regressions (p ≤ 0.05). Twenty individuals with type 1 diabetes (7 females) with a mean ± SD age of 35 ± 11 years, body mass index (BMI) 24.8 ± 2.8 kg/m2 and HbA1c 54 ± 7 mmol/mol were included. Hypoglycemia/hour (70 mg/dL; <3.9 mmol/L) was similar in both trial arms (12 hrs: 0.07 ± 0.06 vs. 36 hrs: 0.05 ± 0.03, p=0.21). Glycemic excursions during the oral glucose tolerance test were not different after the two fasting periods. Beta-hydroxybutyrate levels were higher after prolonged fasting (p=0.0006). Our study showed that people with type 1 diabetes can safely perform a 36 hours fasting period with a low risk of hypoglycemia and ketoacidosis. CLINICAL TRIAL REGISTRATION DRKS.de, identifier DRKS00016148.
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Affiliation(s)
- Othmar Moser
- Interdisciplinary Metabolic Medicine Trials Unit, Division of Endocrinology and Diabetology, Department of Internal Medicine, Medical University of Graz, Graz, Austria
- Division of Exercise Physiology and Metabolism, Department of Sport Science, University of Bayreuth, Bayreuth, Germany
- *Correspondence: Othmar Moser, ; Harald Sourij,
| | - Max L. Eckstein
- Interdisciplinary Metabolic Medicine Trials Unit, Division of Endocrinology and Diabetology, Department of Internal Medicine, Medical University of Graz, Graz, Austria
- Division of Exercise Physiology and Metabolism, Department of Sport Science, University of Bayreuth, Bayreuth, Germany
| | - Alexander Mueller
- Interdisciplinary Metabolic Medicine Trials Unit, Division of Endocrinology and Diabetology, Department of Internal Medicine, Medical University of Graz, Graz, Austria
- Exercise Physiology, Training & Training Therapy Research Group, Institute of Sports Science, University of Graz, Graz, Austria
- Austria Clinical Institute of Medical and Chemical Laboratory Diagnostics, Medical University of Graz, Graz, Austria
| | - Norbert J. Tripolt
- Interdisciplinary Metabolic Medicine Trials Unit, Division of Endocrinology and Diabetology, Department of Internal Medicine, Medical University of Graz, Graz, Austria
| | - Hakan Yildirim
- Interdisciplinary Metabolic Medicine Trials Unit, Division of Endocrinology and Diabetology, Department of Internal Medicine, Medical University of Graz, Graz, Austria
| | - Farah Abbas
- Interdisciplinary Metabolic Medicine Trials Unit, Division of Endocrinology and Diabetology, Department of Internal Medicine, Medical University of Graz, Graz, Austria
| | - Peter N. Pferschy
- Interdisciplinary Metabolic Medicine Trials Unit, Division of Endocrinology and Diabetology, Department of Internal Medicine, Medical University of Graz, Graz, Austria
| | - Nandu Goswami
- Division of Physiology, Otto Loewi Research Center, Medical University of Graz, Graz, Austria
| | - Felix Aberer
- Interdisciplinary Metabolic Medicine Trials Unit, Division of Endocrinology and Diabetology, Department of Internal Medicine, Medical University of Graz, Graz, Austria
| | - Anna Obermayer
- Interdisciplinary Metabolic Medicine Trials Unit, Division of Endocrinology and Diabetology, Department of Internal Medicine, Medical University of Graz, Graz, Austria
| | - Thomas R. Pieber
- Interdisciplinary Metabolic Medicine Trials Unit, Division of Endocrinology and Diabetology, Department of Internal Medicine, Medical University of Graz, Graz, Austria
| | - Harald Kojzar
- Interdisciplinary Metabolic Medicine Trials Unit, Division of Endocrinology and Diabetology, Department of Internal Medicine, Medical University of Graz, Graz, Austria
| | - Caren Sourij
- Division of Cardiology, Medical University of Graz, Graz, Austria
| | - Martina Brunner
- Interdisciplinary Metabolic Medicine Trials Unit, Division of Endocrinology and Diabetology, Department of Internal Medicine, Medical University of Graz, Graz, Austria
| | - Tobias Niedrist
- Austria Clinical Institute of Medical and Chemical Laboratory Diagnostics, Medical University of Graz, Graz, Austria
- Clinical Institute of Medical and Chemical Laboratory Diagnostics, Medical University of Graz, Graz, Austria
| | - Markus Herrmann
- Austria Clinical Institute of Medical and Chemical Laboratory Diagnostics, Medical University of Graz, Graz, Austria
- Clinical Institute of Medical and Chemical Laboratory Diagnostics, Medical University of Graz, Graz, Austria
| | - Harald Sourij
- Interdisciplinary Metabolic Medicine Trials Unit, Division of Endocrinology and Diabetology, Department of Internal Medicine, Medical University of Graz, Graz, Austria
- *Correspondence: Othmar Moser, ; Harald Sourij,
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155
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Lynch S, Johnston JD, Robertson MD. Early versus late time‐restricted feeding in adults at increased risk of developing type 2 diabetes: Is there an optimal time to eat for metabolic health? NUTR BULL 2020. [DOI: 10.1111/nbu.12479] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- S. Lynch
- Faculty of Health and Medical Sciences School of Biosciences and Medicine University of Surrey Guildford UK
| | - J. D. Johnston
- Faculty of Health and Medical Sciences School of Biosciences and Medicine University of Surrey Guildford UK
| | - M. D. Robertson
- Faculty of Health and Medical Sciences School of Biosciences and Medicine University of Surrey Guildford UK
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156
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Adafer R, Messaadi W, Meddahi M, Patey A, Haderbache A, Bayen S, Messaadi N. Food Timing, Circadian Rhythm and Chrononutrition: A Systematic Review of Time-Restricted Eating's Effects on Human Health. Nutrients 2020; 12:nu12123770. [PMID: 33302500 PMCID: PMC7763532 DOI: 10.3390/nu12123770] [Citation(s) in RCA: 79] [Impact Index Per Article: 19.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2020] [Revised: 12/04/2020] [Accepted: 12/06/2020] [Indexed: 12/13/2022] Open
Abstract
INTRODUCTION Recent observations have shown that lengthening the daily eating period may contribute to the onset of chronic diseases. Time-restricted eating (TRE) is a diet that especially limits this daily food window. It could represent a dietary approach that is likely to improve health markers. The aim of this study was to review how time-restricted eating affects human health. METHOD Five general databases and six nutrition journals were screened to identify all studies published between January 2014 and September 2020 evaluating the effects of TRE on human populations. RESULTS Among 494 articles collected, 23 were finally included for analysis. The overall adherence rate to TRE was 80%, with a 20% unintentional reduction in caloric intake. TRE induced an average weight loss of 3% and a loss of fat mass. This fat loss was also observed without any caloric restriction. Interestingly, TRE produced beneficial metabolic effects independently of weight loss, suggesting an intrinsic effect based on the realignment of feeding and the circadian clock. CONCLUSIONS TRE is a simple and well-tolerated diet that generates many beneficial health effects based on chrononutrition principles. More rigorous studies are needed, however, to confirm those effects, to understand their mechanisms and to assess their applicability to human health.
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Affiliation(s)
- Réda Adafer
- Department of General Medicine, Henri Warembourg Faculty of Medicine, University of Lille, 59000 Lille, France
| | - Wassil Messaadi
- Department of General Medicine, Henri Warembourg Faculty of Medicine, University of Lille, 59000 Lille, France
| | - Mériem Meddahi
- Department of General Medicine, Henri Warembourg Faculty of Medicine, University of Lille, 59000 Lille, France
| | - Alexia Patey
- Department of General Medicine, Henri Warembourg Faculty of Medicine, University of Lille, 59000 Lille, France
| | - Abdelmalik Haderbache
- Department of General Medicine, Henri Warembourg Faculty of Medicine, University of Lille, 59000 Lille, France
| | - Sabine Bayen
- Department of General Medicine, Henri Warembourg Faculty of Medicine, University of Lille, 59000 Lille, France
| | - Nassir Messaadi
- Department of General Medicine, Henri Warembourg Faculty of Medicine, University of Lille, 59000 Lille, France
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157
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Smyers ME, Koch LG, Britton SL, Wagner JG, Novak CM. Enhanced weight and fat loss from long-term intermittent fasting in obesity-prone, low-fitness rats. Physiol Behav 2020; 230:113280. [PMID: 33285179 DOI: 10.1016/j.physbeh.2020.113280] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2020] [Revised: 11/10/2020] [Accepted: 11/30/2020] [Indexed: 12/15/2022]
Abstract
BACKGROUND Intermittent fasting (IF) strategies have emerged as viable alternatives to traditional calorie-restricted diets. A key predictor of metabolic health and response to diet is cardiometabolic fitness, including intrinsic aerobic capacity. In a contrasting rat model of aerobic capacity-high- and low-capacity runners (HCR, LCR)-we found that the lean and physically active HCR were also more responsive to a standard calorie-restricted diet. Here, we assessed the ability of IF to induce weight loss on a background of high and low aerobic fitness accompanied by different levels of daily physical activity. METHODS Female HCR and LCR (8 per line) were subjected to IF (alternate-day fasting) for 14 weeks. Outcomes included changes in body weight, fat and lean mass, daily physical activity, and food and water intake. After initial measurements, IF was continued, and measurements were repeated after one year of IF. RESULTS All rats lost weight with IF, and LCR lost significantly more weight than HCR. This difference was primarily due to differential fat loss; loss of lean mass, on the other hand, was similar between HCR and LCR. Total food intake decreased with IF, and LCR showed lower intake than HCR only during the first 5 weeks of IF. Physical activity was suppressed by long-term IF. Physical activity increased on fed days compared to fasted days, and this pattern was more pronounced in HCR. The differential effects of IF in HCR and LCR persisted after one year of IF, with IF preventing the marked weight gain seen in ad libitum fed LCR during this time. CONCLUSION Weight and fat loss from IF was more pronounced in obesity-prone, low-aerobic capacity LCR, despite the low activity levels seen in these rats. The possibility that aerobic capacity modulates response to IF in human participants remains unexplored.
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Affiliation(s)
- Mark E Smyers
- School of Biomedical Sciences, Kent State University, Kent, OH 44242, United States.
| | - Lauren G Koch
- Department of Physiology and Pharmacology, The University of Toledo College of Medicine and Life Sciences, Toledo, Ohio 43614-2598, United States.
| | - Steven L Britton
- Department of Anesthesiology, and Department of Molecular and Integrative Physiology, University of Michigan, Ann Arbor, MI 48109-5622, United States.
| | - Jacob G Wagner
- Department of Biological Sciences, Kent State University, Kent, OH 44242, United States.
| | - Colleen M Novak
- School of Biomedical Sciences, Kent State University, Kent, OH 44242, United States; Department of Biological Sciences, Kent State University, Kent, OH 44242, United States.
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158
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Martchenko A, Martchenko SE, Biancolin AD, Brubaker PL. Circadian Rhythms and the Gastrointestinal Tract: Relationship to Metabolism and Gut Hormones. Endocrinology 2020; 161:5909225. [PMID: 32954405 PMCID: PMC7660274 DOI: 10.1210/endocr/bqaa167] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/16/2020] [Accepted: 09/16/2020] [Indexed: 02/08/2023]
Abstract
Circadian rhythms are 24-hour biological rhythms within organisms that have developed over evolutionary time due to predefined environmental changes, mainly the light-dark cycle. Interestingly, metabolic tissues, which are largely responsible for establishing diurnal metabolic homeostasis, have been found to express cell-autonomous clocks that are entrained by food intake. Disruption of the circadian system, as seen in individuals who conduct shift work, confers significant risk for the development of metabolic diseases such as type 2 diabetes and obesity. The gastrointestinal (GI) tract is the first point of contact for ingested nutrients and is thus an essential organ system for metabolic control. This review will focus on the circadian function of the GI tract with a particular emphasis on its role in metabolism through regulation of gut hormone release. First, the circadian molecular clock as well as the organization of the mammalian circadian system is introduced. Next, a brief overview of the structure of the gut as well as the circadian regulation of key functions important in establishing metabolic homeostasis is discussed. Particularly, the focus of the review is centered around secretion of gut hormones; however, other functions of the gut such as barrier integrity and intestinal immunity, as well as digestion and absorption, all of which have relevance to metabolic control will be considered. Finally, we provide insight into the effects of circadian disruption on GI function and discuss chronotherapeutic intervention strategies for mitigating associated metabolic dysfunction.
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Affiliation(s)
| | | | | | - Patricia L Brubaker
- Department of Physiology, University of Toronto, Toronto, ON, Canada
- Department of Medicine, University of Toronto, Toronto, ON, Canada
- Correspondence: P.L. Brubaker, Rm 3366 Medical Sciences Building, University of Toronto, 1 King’s College Circle, Toronto, ON M5S 1A8 Canada. E-mail:
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159
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Sikand G, Severson T. Top 10 dietary strategies for atherosclerotic cardiovascular risk reduction. Am J Prev Cardiol 2020; 4:100106. [PMID: 34327475 PMCID: PMC8315554 DOI: 10.1016/j.ajpc.2020.100106] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2020] [Revised: 10/09/2020] [Accepted: 10/13/2020] [Indexed: 01/30/2023] Open
Abstract
Poor dietary quality has surpassed all other mortality risk factors, accounting for 11 million deaths and half of CVD deaths globally. Implementation of current nutrition recommendations from the American Heart Association (AHA), American College of Cardiology (ACC) and the National Lipid Association (NLA) can markedly benefit the primary and secondary prevention of atherosclerotic cardiovascular disease (ASCVD). These include: 1) incorporate nutrition screening into medical visits; 2) refer patients to a registered dietitian nutritionist (RDN) for medical nutrition therapy, when appropriate, for prevention of ASCVD; 3) follow ACC/AHA Nutrition and Diet Recommendations for ASCVD prevention and management of overweight/obesity, type 2 diabetes and hypertension; 4) include NLA nutrition goals for optimizing low-density lipoprotein cholesterol (LDL-C) and non-high-density lipoprotein cholesterol (non-HDL-C) and reducing ASCVD risk; 5) utilize evidence-based heart-healthy eating patterns for improving cardiometabolic risk factors, dyslipidemia and ASCVD risk; 6) implement ACC/AHA/NLA nutrition and lifestyle recommendations for optimizing triglyceride levels; 7) understand the impact of saturated fats, trans fats, omega-3 and omega-6 polyunsaturated fats and monounsaturated fats on ASCVD risk; 8) limit excessive intake of dietary cholesterol for those with dyslipidemia, diabetes and at risk for heart failure; 9) include dietary adjuncts such as viscous fiber, plant sterols/stanols and probiotics; and 10) implement AHA/ACC and NLA physical activity recommendations for the optimization of lipids and prevention of ASCVD. Evidence on controversies pertaining to saturated fat, processed meat, red meat, intermittent fasting, low-carbohydrate/very-low-carbohydrate diets and caffeine are discussed.
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160
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Hall KL. Forging Forward Together: Transforming Scientific Practice to Accelerate Scientific Progress. Ann Behav Med 2020; 54:968-977. [PMID: 33416841 DOI: 10.1093/abm/kaaa092] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Rapidly advancing solutions requires our community to continuously re-examine successes of yesterday to inspire new approaches for today while collaboratively envisioning what’s needed for tomorrow.
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Affiliation(s)
- Kara L Hall
- National Cancer Institute, Division of Cancer Control and Population Sciences, Rockville, Maryland, USA
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161
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Balasubramanian P, DelFavero J, Ungvari A, Papp M, Tarantini A, Price N, de Cabo R, Tarantini S. Time-restricted feeding (TRF) for prevention of age-related vascular cognitive impairment and dementia. Ageing Res Rev 2020; 64:101189. [PMID: 32998063 DOI: 10.1016/j.arr.2020.101189] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2020] [Revised: 09/04/2020] [Accepted: 09/21/2020] [Indexed: 12/13/2022]
Abstract
Aging is the most significant risk factor for vascular cognitive impairment (VCI), and the number of individuals affected by VCI is expected to exponentially increase in the upcoming decades. Yet, there are no current preventative or therapeutic treatments available against the development and progression of VCI. Therefore, there is a pressing need to better understand the pathophysiology underlying these conditions, for the development of novel tools and interventions to improve cerebrovascular health and delay the onset of VCI. There is strong epidemiological and experimental evidence that lifestyle factors, including nutrition and dietary habits, significantly affect cerebrovascular health and thereby influence the pathogenesis of VCI. Here, recent evidence is presented discussing the effects of lifestyle interventions against age-related diseases which in turn, inspired novel research aimed at investigating the possible beneficial effects of dietary interventions for the prevention of cognitive decline in older adults.
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Affiliation(s)
- Priya Balasubramanian
- Vascular Cognitive Impairment and Neurodegeneration Program, Reynolds Oklahoma Center on Aging/Center for Geroscience and Healthy Brain Aging, Department of Biochemistry and Molecular Biology, University of Oklahoma Health Sciences Center, Oklahoma City, OK, USA
| | - Jordan DelFavero
- Vascular Cognitive Impairment and Neurodegeneration Program, Reynolds Oklahoma Center on Aging/Center for Geroscience and Healthy Brain Aging, Department of Biochemistry and Molecular Biology, University of Oklahoma Health Sciences Center, Oklahoma City, OK, USA
| | - Anna Ungvari
- Vascular Cognitive Impairment and Neurodegeneration Program, Reynolds Oklahoma Center on Aging/Center for Geroscience and Healthy Brain Aging, Department of Biochemistry and Molecular Biology, University of Oklahoma Health Sciences Center, Oklahoma City, OK, USA
| | - Magor Papp
- International Training Program in Geroscience, Doctoral School of Basic and Translational Medicine/Department of Public Health, Semmelweis University, Budapest, Hungary
| | - Amber Tarantini
- Vascular Cognitive Impairment and Neurodegeneration Program, Reynolds Oklahoma Center on Aging/Center for Geroscience and Healthy Brain Aging, Department of Biochemistry and Molecular Biology, University of Oklahoma Health Sciences Center, Oklahoma City, OK, USA; International Training Program in Geroscience, Doctoral School of Basic and Translational Medicine/Department of Public Health, Semmelweis University, Budapest, Hungary; Stephenson Cancer Center, University of Oklahoma Health Sciences Center, Oklahoma City, OK, USA
| | - Nathan Price
- Translational Gerontology Branch, Intramural Research Program, National Institute on Aging, National Institutes of Health, Baltimore, MD, USA
| | - Rafael de Cabo
- Translational Gerontology Branch, Intramural Research Program, National Institute on Aging, National Institutes of Health, Baltimore, MD, USA
| | - Stefano Tarantini
- Vascular Cognitive Impairment and Neurodegeneration Program, Reynolds Oklahoma Center on Aging/Center for Geroscience and Healthy Brain Aging, Department of Biochemistry and Molecular Biology, University of Oklahoma Health Sciences Center, Oklahoma City, OK, USA; International Training Program in Geroscience, Doctoral School of Basic and Translational Medicine/Department of Public Health, Semmelweis University, Budapest, Hungary; Department of Health Promotion Sciences, College of Public Health, University of Oklahoma Health Sciences Center, Oklahoma City, OK, USA.
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162
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Deng Y, Liu W, Wang J, Yu J, Yang LQ. Intermittent Fasting Improves Lipid Metabolism Through Changes in Gut Microbiota in Diet-Induced Obese Mice. Med Sci Monit 2020; 26:e926789. [PMID: 33223514 PMCID: PMC7693779 DOI: 10.12659/msm.926789] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
Background The mechanism of how intermittent fasting (IF) improves metabolism is not fully understood. Our study aimed to explore the effect of IF on lipid metabolism in obese mice, specifically on the intestinal flora. Material/Methods Diet-induced obese (DIO) mice were subjected to ad libitum (AL) feeding or IF (alternate-day fasting) for 30 days. We examined the lipid metabolism, fat distribution, gene expression of lipid metabolism, and intestinal flora in the mice. Results Despite having access to the same high-fat diet as the AL-fed groups, IF mice displayed pronounced weight loss, and their lipid metabolism significantly improved, mainly reflected in lower serum lipid levels and ameliorated liver steatosis. IF also reduced metabolic endotoxemia in DIO mice. The 16S ribosomal deoxyribonucleic acid gene amplicon sequencing suggested that IF did not change the community richness but had a tendency to increase community diversity in the intestinal flora. In addition, IF significantly reduced the ratio of Firmicutes to Bacteroidetes and increased the relative abundance of Allobaculum in the intestinal flora. Conclusions IF can improve fat metabolism, reduce fat accumulation, promote white fat conversion to beige, and improve gut microbiota.
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Affiliation(s)
- Ya Deng
- Department of Pediatrics, The Second Hospital of Anhui Medical University, Hefei, Anhui, China (mainland)
| | - Wanjun Liu
- Department of Pediatrics, The Second Hospital of Anhui Medical University, Hefei, Anhui, China (mainland)
| | - Jianqing Wang
- Department of Pharmacy, The Fourth Affiliated Hospital of Anhui Medical University, Heifei, Anhui, China (mainland)
| | - Jun Yu
- Department of Pharmacy, The Fourth Affiliated Hospital of Anhui Medical University, Heifei, Anhui, China (mainland)
| | - Li-Qi Yang
- Department of Pediatrics, The Second Hospital of Anhui Medical University, Hefei, Anhui, China (mainland)
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163
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Time-Restricted Eating Alters Food Intake Patterns, as Prospectively Documented by a Smartphone Application. Nutrients 2020; 12:nu12113396. [PMID: 33167321 PMCID: PMC7694329 DOI: 10.3390/nu12113396] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2020] [Revised: 11/01/2020] [Accepted: 11/03/2020] [Indexed: 12/21/2022] Open
Abstract
Time-restricted eating (TRE) can facilitate weight loss, yet its effect on eating patterns remains unknown. Twenty adults with BMI ≥ 25 kg/m2 underwent a 12-week randomized trial, examining the effect of an 8-h, time-restricted eating intervention on dietary patterns. Oral intake was documented using a smartphone. Dietary patterns, assessed as frequency of eating occasions (EOs) and types of meals/snacks and beverages, were compared between baseline (T0), early-intervention (T1), and end-intervention (T2). At T1 and T2, both groups had less EOs compared to T0, with greater reduction seen in the TRE group (−28%) than the non-TRE group (−12%) at T2 (p = 0.01 vs. non-TRE). Comparing T1 to T0, the TRE group documented less incomplete meals (−32.5%: p = 0.02), high quality snacks (−23.6%: p = 0.03), and low quality snacks (−36.6%: p = 0.004). Comparing T2 to T0, the TRE group documented less incomplete meals (−33.9%: p = 0.03), high quality snacks (−28.1%: p < 0.001) and low quality snacks (−51.2%: p < 0.001). Caffeinated beverage intake was reduced in the TRE group at T1 (−20.2%) and T2 (−28.8%) vs. T0, but remained unaltered in the non-TRE group. By using a smartphone application to document dietary intake, TRE significantly reduced the number of EOs, snacks, and caffeinated beverages, relative to baseline and relative to the non-TRE.
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164
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Defour M, Hooiveld GJEJ, van Weeghel M, Kersten S. Probing metabolic memory in the hepatic response to fasting. Physiol Genomics 2020; 52:602-617. [PMID: 33074794 DOI: 10.1152/physiolgenomics.00117.2020] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Tissues may respond differently to a particular stimulus if they have been previously exposed to that same stimulus. Here, we tested the hypothesis that a strong metabolic stimulus such as fasting may influence the hepatic response to a subsequent fast and thus elicit a memory effect. Overnight fasting in mice significantly increased plasma free fatty acids, glycerol, β-hydroxybutyrate, and liver triglycerides, and decreased plasma glucose, plasma triglycerides, and liver glycogen levels. In addition, fasting dramatically changed the liver transcriptome, upregulating genes involved in gluconeogenesis and in uptake, oxidation, storage, and mobilization of fatty acids, and downregulating genes involved in fatty acid synthesis, fatty acid elongation/desaturation, and cholesterol synthesis. Fasting also markedly impacted the liver metabolome, causing a decrease in the levels of numerous amino acids, glycolytic-intermediates, TCA cycle intermediates, and nucleotides. However, these fasting-induced changes were unaffected by two previous overnight fasts. Also, no significant effect was observed of prior fasting on glucose tolerance. Finally, analysis of the effect of fasting on the transcriptome in hepatocyte humanized mouse livers indicated modest similarity in gene regulation in mouse and human liver cells. In general, genes involved in metabolic pathways were upregulated or downregulated to a lesser extent in human liver cells than in mouse liver cells. In conclusion, we found that previous exposure to fasting in mice did not influence the hepatic response to a subsequent fast, arguing against the concept of metabolic memory in the liver. Our data provide a useful resource for the study of liver metabolism during fasting.
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Affiliation(s)
- Merel Defour
- Nutrition, Metabolism and Genomics Group, Division of Human Nutrition and Health, Wageningen University, Wageningen, The Netherlands
| | - Guido J E J Hooiveld
- Nutrition, Metabolism and Genomics Group, Division of Human Nutrition and Health, Wageningen University, Wageningen, The Netherlands
| | - Michel van Weeghel
- Laboratory Genetic Metabolic Diseases, Amsterdam UMC, Amsterdam, The Netherlands
| | - Sander Kersten
- Nutrition, Metabolism and Genomics Group, Division of Human Nutrition and Health, Wageningen University, Wageningen, The Netherlands
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165
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Park J, Seo YG, Paek YJ, Song HJ, Park KH, Noh HM. Effect of alternate-day fasting on obesity and cardiometabolic risk: A systematic review and meta-analysis. Metabolism 2020; 111:154336. [PMID: 32777443 DOI: 10.1016/j.metabol.2020.154336] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/08/2020] [Revised: 07/15/2020] [Accepted: 08/05/2020] [Indexed: 12/20/2022]
Abstract
BACKGROUND & AIMS Alternate-day fasting (ADF) is related to weight reduction, lowered risks of weight regain, and relative lean body mass preservation compared to continuous energy restriction. This meta-analysis aimed to assess the effects of ADF on obesity-related factors and cardiometabolic risk factors in adults. METHODS Using PubMed, EMBASE, and Cochrane online databases, an electronic search was performed. Randomized controlled trials were investigated to evaluate ADF effects on body mass index (BMI), body weight (BW), waist circumference, body fat mass (FM), lean body mass, and cardiometabolic risk factors in adults aged ≥18 years. By utilizing a random-effects model, meta-analyses to assess weighted mean difference (WMD) with 95% confidence intervals (CIs) were performed for eight randomized controlled trials (total participants = 728). RESULTS We observed significant effects of ADF for BMI (WMD -0.73 kg/m2, 95% CI -1.13 to -0.34), FM (WMD -1.27 kg, 95% CI -2.09 to -0.46), and total cholesterol (WMD -8.14 mg/dL, 95% CI -14.59 to -1.69). Subgroup analyses indicated that significant intervention effects were observed for BMI, BW, FM, and total cholesterol when compared to the control, the participants were overweight, and the study duration was <6 months. ADF is effective in reducing waist circumference in adults aged ≥40 years with obesity. However, there was no difference between ADF and continuous energy restriction, time-restricted feeding, or control with regard to lean body mass. CONCLUSIONS Current evidence suggests that ADF effectively lowers BMI, BW, FM, and total cholesterol in adults with overweight within 6 months compared to the control.
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Affiliation(s)
- Jihyun Park
- Department of Family Medicine, Hallym University Sacred Heart Hospital, Anyang, Gyeonggi-do 14068, Republic of Korea
| | - Young-Gyun Seo
- Department of Family Medicine, Hallym University Sacred Heart Hospital, Anyang, Gyeonggi-do 14068, Republic of Korea.
| | - Yu-Jin Paek
- Department of Family Medicine, Hallym University Sacred Heart Hospital, Anyang, Gyeonggi-do 14068, Republic of Korea
| | - Hong Ji Song
- Department of Family Medicine, Hallym University Sacred Heart Hospital, Anyang, Gyeonggi-do 14068, Republic of Korea
| | - Kyung Hee Park
- Department of Family Medicine, Hallym University Sacred Heart Hospital, Anyang, Gyeonggi-do 14068, Republic of Korea
| | - Hye-Mi Noh
- Department of Family Medicine, Hallym University Sacred Heart Hospital, Anyang, Gyeonggi-do 14068, Republic of Korea
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166
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Khedkar PH. Intermittent fasting-The new lifestyle? Acta Physiol (Oxf) 2020; 229:e13518. [PMID: 32485083 DOI: 10.1111/apha.13518] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2020] [Revised: 05/27/2020] [Accepted: 05/27/2020] [Indexed: 12/28/2022]
Affiliation(s)
- Pratik H. Khedkar
- Charité—Universitätsmedizin Berlin, corporate member of the Freie Universität BerlinHumboldt Universität zu Berlin and the Berlin Institute of HealthInstitute of Vegetative Physiology Berlin Germany
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167
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Verma N, Thakkar N, Phillips J, Ealey K, Sung HK. Dynamic remodeling of white adipose tissue by intermittent fasting. Curr Opin Food Sci 2020. [DOI: 10.1016/j.cofs.2020.10.023] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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168
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Marinho TDS, Ornellas F, Aguila MB, Mandarim-de-Lacerda CA. Browning of the subcutaneous adipocytes in diet-induced obese mouse submitted to intermittent fasting. Mol Cell Endocrinol 2020; 513:110872. [PMID: 32454192 DOI: 10.1016/j.mce.2020.110872] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/14/2020] [Revised: 05/15/2020] [Accepted: 05/16/2020] [Indexed: 02/06/2023]
Abstract
PURPOSE We studied subcutaneous white adipose tissue (sWAT) of obese mice submitted to intermittent fasting (IF). METHODS Twelve-week-old C57BL/6 male mice received the diets Control (C) or high-fat (HF) for eight weeks (n = 20/each). Then, part of each group performed IF (24 h feeding/24 h fasting) for four weeks: C, C-IF, HF, and HF-IF (n = 10/each). RESULTS Food intake did not show a difference in feeding and fasting days, but HF groups had a high energy intake. IF led to multilocular adipocytes in sWAT (browning), and improved respiratory quotient on the fed day. IF decreased gene expression of Leptin, but increased Adiponectin, β3ar (beta3 adrenoreceptor), and Ucp1 (uncoupling protein). IF enhanced immunostaining of Caspase 3, Pcna (proliferating cell nuclear antigen), and UCP1 in sWAT. IF attenuated pro-inflammatory markers and pro-apoptotic markers in sWAT. CONCLUSIONS IF in obese mice led to browning in sWAT adipocytes, enhanced thermogenesis, an improved adipose tissue pro-inflammatory profile.
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Affiliation(s)
- Thatiany de Souza Marinho
- Laboratory of Morphometry, Metabolism, and Cardiovascular Diseases, Biomedical Center, Institute of Biology, The University of the State of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Fernanda Ornellas
- Laboratory of Morphometry, Metabolism, and Cardiovascular Diseases, Biomedical Center, Institute of Biology, The University of the State of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Marcia Barbosa Aguila
- Laboratory of Morphometry, Metabolism, and Cardiovascular Diseases, Biomedical Center, Institute of Biology, The University of the State of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Carlos Alberto Mandarim-de-Lacerda
- Laboratory of Morphometry, Metabolism, and Cardiovascular Diseases, Biomedical Center, Institute of Biology, The University of the State of Rio de Janeiro, Rio de Janeiro, Brazil.
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169
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Caristia S, De Vito M, Sarro A, Leone A, Pecere A, Zibetti A, Filigheddu N, Zeppegno P, Prodam F, Faggiano F, Marzullo P. Is Caloric Restriction Associated with Better Healthy Aging Outcomes? A Systematic Review and Meta-Analysis of Randomized Controlled Trials. Nutrients 2020; 12:E2290. [PMID: 32751664 PMCID: PMC7468870 DOI: 10.3390/nu12082290] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2020] [Revised: 07/28/2020] [Accepted: 07/28/2020] [Indexed: 12/11/2022] Open
Abstract
Background: Global dietary patterns have gradually shifted toward a 'western type' with progressive increases in rates of metabolic imbalance. Recently, animal and human studies have revealed positive effects of caloric restriction (CR) on many health domains, giving new knowledge for prevention of ill and health promotion; Methods: We conducted a systematic review (SR) of randomized controlled trials (RCTs) investigating the role of CR on health status in adults. A meta-analysis was performed on anthropometric, cardiovascular and metabolic outcomes; Results: A total of 29 articles were retrieved including data from eight RCTs. All included RCTs were at low risk for performance bias related to objective outcomes. Collectively, articles included 704 subjects. Among the 334 subjects subjected to CR, the compliance with the intervention appeared generally high. Meta-analyses proved benefit of CR on reduction of body weight, BMI, fat mass, total cholesterol, while a minor impact was shown for LDL, fasting glucose and insulin levels. No effect emerged for HDL and blood pressure after CR. Data were insufficient for other hormone variables in relation to meta-analysis of CR effects; Conclusion: CR is a nutritional pattern linked to improved cardiometabolic status. However, evidence is limited on the multidimensional aspects of health and requires more studies of high quality to identify the precise impact of CR on health status and longevity.
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Affiliation(s)
- Silvia Caristia
- Department of Translational Medicine (DIMET), Università del Piemonte Orientale, 28100 Novara, Italy; (S.C.); (M.D.V.); (A.S.); (A.L.); (A.P.); (A.Z.); (N.F.); (P.Z.); (F.F.)
| | - Marta De Vito
- Department of Translational Medicine (DIMET), Università del Piemonte Orientale, 28100 Novara, Italy; (S.C.); (M.D.V.); (A.S.); (A.L.); (A.P.); (A.Z.); (N.F.); (P.Z.); (F.F.)
| | - Andrea Sarro
- Department of Translational Medicine (DIMET), Università del Piemonte Orientale, 28100 Novara, Italy; (S.C.); (M.D.V.); (A.S.); (A.L.); (A.P.); (A.Z.); (N.F.); (P.Z.); (F.F.)
| | - Alessio Leone
- Department of Translational Medicine (DIMET), Università del Piemonte Orientale, 28100 Novara, Italy; (S.C.); (M.D.V.); (A.S.); (A.L.); (A.P.); (A.Z.); (N.F.); (P.Z.); (F.F.)
| | - Alessandro Pecere
- Department of Translational Medicine (DIMET), Università del Piemonte Orientale, 28100 Novara, Italy; (S.C.); (M.D.V.); (A.S.); (A.L.); (A.P.); (A.Z.); (N.F.); (P.Z.); (F.F.)
| | - Angelica Zibetti
- Department of Translational Medicine (DIMET), Università del Piemonte Orientale, 28100 Novara, Italy; (S.C.); (M.D.V.); (A.S.); (A.L.); (A.P.); (A.Z.); (N.F.); (P.Z.); (F.F.)
| | - Nicoletta Filigheddu
- Department of Translational Medicine (DIMET), Università del Piemonte Orientale, 28100 Novara, Italy; (S.C.); (M.D.V.); (A.S.); (A.L.); (A.P.); (A.Z.); (N.F.); (P.Z.); (F.F.)
| | - Patrizia Zeppegno
- Department of Translational Medicine (DIMET), Università del Piemonte Orientale, 28100 Novara, Italy; (S.C.); (M.D.V.); (A.S.); (A.L.); (A.P.); (A.Z.); (N.F.); (P.Z.); (F.F.)
| | - Flavia Prodam
- Department of Health Sciences (DISS), Università del Piemonte Orientale, 28100 Novara, Italy;
| | - Fabrizio Faggiano
- Department of Translational Medicine (DIMET), Università del Piemonte Orientale, 28100 Novara, Italy; (S.C.); (M.D.V.); (A.S.); (A.L.); (A.P.); (A.Z.); (N.F.); (P.Z.); (F.F.)
| | - Paolo Marzullo
- Department of Translational Medicine (DIMET), Università del Piemonte Orientale, 28100 Novara, Italy; (S.C.); (M.D.V.); (A.S.); (A.L.); (A.P.); (A.Z.); (N.F.); (P.Z.); (F.F.)
- IRCCS Istituto Auxologico Italiano, Ospedale S. Giuseppe, 28824 Piancavallo, Italy
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170
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Hydes TJ, Ravi S, Loomba R, E Gray M. Evidence-based clinical advice for nutrition and dietary weight loss strategies for the management of NAFLD and NASH. Clin Mol Hepatol 2020; 26:383-400. [PMID: 32674529 PMCID: PMC7641567 DOI: 10.3350/cmh.2020.0067] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/06/2020] [Accepted: 05/19/2020] [Indexed: 02/06/2023] Open
Abstract
Nonalcoholic fatty liver disease (NAFLD) is the most common cause of chronic liver disease worldwide and affects approximately one third of adults in the United States. The disease is becoming a global epidemic as a result of the rising rates of obesity and metabolic disease. Emerging data suggest weight loss of ≥10% overall body weight is beneficial in resolving steatosis and reversing fibrosis. Prospective trials comparing various diets are limited by lack of sufficient power as well as pre- and post-treatment histopathology, and therefore no specific diet is recommended at this time. In this narrative review we examine the pathophysiology behind specific macronutrient components that can either promote or reverse NAFLD to help inform more specific dietary recommendations. Overall, the data supports reducing saturated fat, refined carbohydrates, and red and processed meats in the diet, and increasing the consumption of plant-based foods. Diets that incorporate these recommendations include plant-based diets such as the Dietary Approaches to Stop Hypertension, Mediterranean, vegetarian, and vegan diets.
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Affiliation(s)
- Theresa J Hydes
- Division of Gastroenterology and Hepatology, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Sujan Ravi
- Division of Gastroenterology and Hepatology, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Rohit Loomba
- Division of Gastroenterology, University of California, San Diego, La Jolla, CA, USA
| | - Meagan E Gray
- Division of Gastroenterology and Hepatology, University of Alabama at Birmingham, Birmingham, AL, USA
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171
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Schumacher LM, Thomas JG, Raynor HA, Rhodes RE, Bond DS. Consistent Morning Exercise May Be Beneficial for Individuals With Obesity. Exerc Sport Sci Rev 2020; 48:201-208. [PMID: 32658039 DOI: 10.1249/jes.0000000000000226] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
This review explores the hypothesis that a consistent exercise time, especially consistent morning exercise, improves exercise adherence and weight management for individuals with overweight or obesity. We discuss data supporting this premise, identify limitations of current research, and outline directions for future research on exercise timing to more robustly evaluate our thesis.
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Affiliation(s)
- Leah M Schumacher
- Weight Control and Diabetes Research Center, The Miriam Hospital/Brown Alpert Medical School, Providence, RI
| | - J Graham Thomas
- Weight Control and Diabetes Research Center, The Miriam Hospital/Brown Alpert Medical School, Providence, RI
| | - Hollie A Raynor
- Department of Nutrition, The University of Tennessee Knoxville, Knoxville, TN
| | - Ryan E Rhodes
- School of Exercise Science, Physical & Health Education/Department of Psychology, University of Victoria, Victoria, British Columbia, Canada
| | - Dale S Bond
- Weight Control and Diabetes Research Center, The Miriam Hospital/Brown Alpert Medical School, Providence, RI
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172
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Faris MAI, Jahrami H, BaHammam A, Kalaji Z, Madkour M, Hassanein M. A systematic review, meta-analysis, and meta-regression of the impact of diurnal intermittent fasting during Ramadan on glucometabolic markers in healthy subjects. Diabetes Res Clin Pract 2020; 165:108226. [PMID: 32446800 DOI: 10.1016/j.diabres.2020.108226] [Citation(s) in RCA: 48] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/07/2020] [Revised: 04/30/2020] [Accepted: 05/16/2020] [Indexed: 12/13/2022]
Abstract
AIM Studies on the effect of Ramadan diurnal intermittent fasting (RDIF) on glucometabolic markers have yielded conflicting results. We conducted ameta-analysis to estimate the effect size for changes in glucometabolic markers in healthy, non-athletic Muslims during Ramadan, and to assess the effect of variable covariates using meta-regression. METHODS CINAHL, Cochrane, EBSCOhost, EMBASE, Google Scholar, ProQuest Medical, PubMed/MEDLINE, ScienceDirect, Scopus, and Web of Science databases were searched from date of inceptionto January 2020. The glucometabolic markers analyzed were: fasting glucose (FG), insulin, insulin resistance (HOMA-IR), leptin, and adiponectin. RESULTS We identified seventy-two studies (3134 participants in total) that were conducted in 22 countries between 1982 and 2020. RDIF-induced effect sizes for the glucometabolic markers were: FG (no. of studies K = 61, number of subjects N = 2743, Hedges'g = -0.102, 95% CI: -0.194, -0.01); serum insulin (K = 16, N = 648, Hedges'g = 0.030 95% CI: -0.165, 0.226); HOMA-IR (K = 10, N = 349, Hedges'g = -0.012, 95% CI: -0.274, 0.250); leptin (K = 13, N = 442, Hedges'g = -0.010, 95% CI: -0.243, 0.223); and adiponectin (K = 11, N = 511, Hedges'g = 0.034, 95% CI: -0.227, 0.296). CONCLUSION RDIF imposes no adverse metabolic impacts, and might help in improving some glucometabolic markers in healthy subjects.
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Affiliation(s)
- Mo'ez Al-Islam Faris
- Department of Clinical Nutrition and Dietetics, College of Health Sciences/Research Institute for Medical and Health Sciences (RIMHS), University of Sharjah, Sharjah, United Arab Emirates.
| | - Haitham Jahrami
- Rehabilitation Services, Periphery Hospitals, Ministry of Health, Manama, Bahrain; College of Medicine and Medical Sciences, Arabian Gulf University, Manama, Bahrain
| | - Ahmed BaHammam
- Department of Medicine, College of Medicine, University Sleep Disorders Center, King Saud University, Riyadh, Saudi Arabia; The Strategic Technologies Program of the National Plan for Sciences and Technology and Innovation in the Kingdom of Saudi Arabia, Riyadh, Saudi Arabia
| | - Zaina Kalaji
- Department of Clinical Nutrition and Dietetics, College of Health Sciences/Research Institute for Medical and Health Sciences (RIMHS), University of Sharjah, Sharjah, United Arab Emirates
| | - Mohammed Madkour
- Department of Medical Laboratory Sciences, College of Health Sciences/Research Institute for Medical and Health Sciences (RIMHS), University of Sharjah, Sharjah, United Arab Emirates
| | - Mohamed Hassanein
- Endocrine Department, Dubai Hospital, Dubai Health Authority, Dubai, United Arab Emirates
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173
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Billingsley HE, Dixon DL, Gipson G, Abbate A, Carbone S. Time restricted feeding: old tools, new packaging? Minerva Cardioangiol 2020; 68:539-541. [PMID: 32221275 DOI: 10.23736/s0026-4725.20.05253-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Hayley E Billingsley
- Department of Kinesiology and Health Sciences, College of Humanities and Sciences, Virginia Commonwealth University, Richmond, VA, USA.,Division of Cardiology, Department of Internal Medicine, Pauley Heart Center, Virginia Commonwealth University, Richmond, VA, USA
| | - Dave L Dixon
- Division of Cardiology, Department of Internal Medicine, Pauley Heart Center, Virginia Commonwealth University, Richmond, VA, USA.,Department of Pharmacotherapy and Outcomes Science, Virginia Commonwealth University School of Pharmacy, Richmond, VA, USA
| | - Graham Gipson
- Division of Nephrology, Department of Internal Medicine, Virginia Commonwealth University, Richmond, VA, USA
| | - Antonio Abbate
- Division of Cardiology, Department of Internal Medicine, Pauley Heart Center, Virginia Commonwealth University, Richmond, VA, USA
| | - Salvatore Carbone
- Department of Kinesiology and Health Sciences, College of Humanities and Sciences, Virginia Commonwealth University, Richmond, VA, USA - .,Division of Cardiology, Department of Internal Medicine, Pauley Heart Center, Virginia Commonwealth University, Richmond, VA, USA
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174
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Sofi F. FASTING-MIMICKING DIET a clarion call for human nutrition research or an additional swan song for a commercial diet? Int J Food Sci Nutr 2020; 71:921-928. [PMID: 32223459 DOI: 10.1080/09637486.2020.1746959] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Numerous studies have reported beneficial effects for fasting in cellular and animal models, but human studies have shown conflicting results. Recently, a new diet has been introduced both in the scientific literature and in the lay media, the so-called fasting-mimicking diet. It is mainly characterised by a diet period that imitates fasting (generally 4-5 consecutive days) consisting of low or very low-calorie intake with a low or very low contribution of carbohydrates and proteins and a high fat intake. This protocol has been tested in some experimental animal models that have studied different outcomes, and in two small clinical trials that have reported some alleged beneficial effects especially on cardio-metabolic risk parameters. However, these clinical trials suffer from many limitations that require attention. The purpose of the present paper is to review the experimental and clinical studies that have investigated this particular dietary approach and to critically discuss the results.
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Affiliation(s)
- Francesco Sofi
- Department of Experimental and Clinical Medicine, University of Florence, Firenze, Italy.,Unit of Clinical Nutrition, Careggi University Hospital, Florence, Italy
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175
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Jahrami HA, Alsibai J, Clark CCT, Faris MAIE. A systematic review, meta-analysis, and meta-regression of the impact of diurnal intermittent fasting during Ramadan on body weight in healthy subjects aged 16 years and above. Eur J Nutr 2020; 59:2291-2316. [DOI: 10.1007/s00394-020-02216-1] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2019] [Accepted: 02/26/2020] [Indexed: 12/13/2022]
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