scholarly journals Sequential Changes Advancing from Exercise-Induced Psychological Improvements to Controlled Eating and Sustained Weight Loss: A Treatment-Focused Causal Chain Model

2020 ◽  
Vol 24 (4) ◽  
Author(s):  
James Annesi
Keyword(s):  
Weight Loss ◽  
Causal Chain ◽  
Chain Model ◽  
Sustained Weight Loss ◽  
Exercise Induced

scholarly journals Metabolic Surgery and Cancer Risk: An Opportunity for Mechanistic Research

Cancers ◽  
2021 ◽  
Vol 13 (13) ◽  
pp. 3183
Author(s):  
Edward R. Sauter ◽  
Brandy Heckman-Stoddard
Keyword(s):  
Weight Loss ◽  
Cancer Risk ◽  
Risk Reduction ◽  
Dramatic Improvement ◽  
Role Of Government ◽  
Sustained Weight Loss ◽  
Historical Role ◽  
Cancer Risk Reduction

Metabolic (bariatric) surgery (MBS) is recommended for individuals with a BMI > 40 kg/m2 or those with a BMI 35–40 kg/m2 who have one or more obesity related comorbidities. MBS leads to greater initial and sustained weight loss than nonsurgical weight loss approaches. MBS provides dramatic improvement in metabolic function, associated with a reduction in type 2 diabetes mellitus and cardiovascular risk. While the number of MBS procedures performed in the U.S. and worldwide continues to increase, they are still only performed on one percent of the affected population. MBS also appears to reduce the risk of certain obesity related cancers, although which cancers are favorably impacted vary by study, who benefits most is uncertain, and the mechanism(s) driving this risk reduction are mostly speculative. The goal of this manuscript is to highlight 1) emerging evidence that MBS influences cancer risk, and that the potential benefit appears to vary based on cancer, gender, surgical procedure, and likely other variables; 2) the role of the NIH in MBS research in T2DM and CV risk for many years, and more recently in cancer; and 3) the opportunity for research to understand the mechanism(s) by which MBS influences cancer. There is evidence that women benefit more from MBS than men, that MBS may actually increase the risk of colorectal cancer in both women and men, and there is speculation that the benefit in cancer risk reduction may vary according to which MBS procedure an individual undergoes. Herein, we review what is currently known, the historical role of government, especially the National Institutes of Health (NIH), in driving this research, and provide suggestions that we believe could lead to a better understanding of whether and how MBS impacts cancer risk, which cancers are impacted either favorably or unfavorably, the role of the NIH and other research agencies, and key questions to address that will help us to move the science forward.

scholarly journals Is One Anastomosis Gastric Bypass with a Biliopancreatic Limb of 150 cm Effective in the Treatment of People with Severe Obesity with BMI > 50?

2021 ◽  
Author(s):  
Arnaud Liagre ◽  
Francesco Martini ◽  
Radwan Kassir ◽  
Gildas Juglard ◽  
Celine Hamid ◽  
...  
Keyword(s):  
Bariatric Surgery ◽  
Weight Loss ◽  
Gastric Bypass ◽  
Severe Obesity ◽  
Postoperative Mortality ◽  
One Anastomosis Gastric Bypass ◽  
Sustained Weight Loss ◽  
Biliopancreatic Limb ◽  
Percentage Excess Weight Loss

Abstract Purpose The treatment of people with severe obesity and BMI > 50 kg/m2 is challenging. The present study aims to evaluate the short and mid-term outcomes of one anastomosis gastric bypass (OAGB) with a biliopancreatic limb of 150 cm as a primary bariatric procedure to treat those people in a referral center for bariatric surgery. Material and Methods Data of patients who underwent OAGB for severe obesity with BMI > 50 kg/m2 between 2010 and 2017 were collected prospectively and analyzed retrospectively. Follow-up comprised clinical and biochemical assessment at 1, 3, 6, 12, 18, and 24 months postoperatively, and once a year thereafter. Results Overall, 245 patients underwent OAGB. Postoperative mortality was null, and early morbidity was observed in 14 (5.7%) patients. At 24 months, the percentage total weight loss (%TWL) was 43.2 ± 9, and percentage excess weight loss (%EWL) was 80 ± 15.7 (184 patients). At 60 months, %TWL was 41.9 ± 10.2, and %EWL was 78.1 ± 18.3 (79 patients). Conversion to Roux-en-Y gastric bypass was needed in three (1.2%) patients for reflux resistant to medical treatment. Six patients (2.4%) had reoperation for an internal hernia during follow-up. Anastomotic ulcers occurred in three (1.2%) patients. Only two patients (0.8%) underwent a second bariatric surgery for insufficient weight loss. Conclusion OAGB with a biliopancreatic limb of 150 cm is feasible and associated with sustained weight loss in the treatment of severe obesity with BMI > 50 kg/m2. Further randomized studies are needed to compare OAGB with other bariatric procedures in this setting. Graphical abstract

Multimodal measurement of body composition change with diet- and exercise-induced weight loss in obese women

2011 ◽  
Vol 35 (2) ◽  
pp. 204-205
Author(s):  
A.R. Josse ◽  
S.A. Atkinson ◽  
M.A. Tarnopolsky ◽  
H. Azizian ◽  
J.K.G. Kramer ◽  
...  
Keyword(s):  
Weight Loss ◽  
Body Composition ◽  
Obese Women ◽  
Composition Change ◽  
Body Composition Change ◽  
Diet And Exercise ◽  
Exercise Induced

Metabolic Profiles, Energy Expenditures and Body Compositions of the Weight Regain versus Sustained Weight Loss Patients who Underwent Roux-en-Y Gastric Bypass

2021 ◽  
Author(s):  
Prapimporn Chattranukulchai Shantavasinkul ◽  
Phillip Omotosho ◽  
Michael J. Muehlbauer ◽  
Michael Natoli ◽  
Leonor Corsino ◽  
...  
Keyword(s):  
Weight Loss ◽  
Gastric Bypass ◽  
Weight Regain ◽  
Metabolic Profiles ◽  
Energy Expenditures ◽  
Sustained Weight Loss ◽  
Body Compositions

scholarly journals Lower extremity muscle size and strength and aerobic capacity decrease with caloric restriction but not with exercise-induced weight loss

2007 ◽  
Vol 102 (2) ◽  
pp. 634-640 ◽  
Author(s):  
Edward P. Weiss ◽  
Susan B. Racette ◽  
Dennis T. Villareal ◽  
Luigi Fontana ◽  
Karen Steger-May ◽  
...  
Keyword(s):  
Weight Loss ◽  
Caloric Restriction ◽  
Aerobic Capacity ◽  
Lean Mass ◽  
Muscle Volume ◽  
Muscle Size ◽  
Thigh Muscle ◽  
Physical Work ◽  
Physical Work Capacity ◽  
Exercise Induced

Caloric restriction (CR) results in fat loss; however, it may also result in loss of muscle and thereby reduce strength and aerobic capacity (V̇o2 max). These effects may not occur with exercise-induced weight loss (EX) because of the anabolic effects of exercise on heart and skeletal muscle. We tested the hypothesis that CR reduces muscle size and strength and V̇o2 max, whereas EX preserves or improves these parameters. Healthy 50- to 60-yr-old men and women (body mass index of 23.5–29.9 kg/m2) were studied before and after 12 mo of weight loss by CR ( n = 18) or EX ( n = 16). Lean mass was assessed by dual-energy X-ray absorptiometry, thigh muscle volume by MRI, isometric and isokinetic knee flexor strength by dynamometry, and treadmill V̇o2 max by indirect calorimetry. Both interventions caused significant decreases in body weight (CR: −10.7 ± 1.4%, EX: −9.5 ± 1.5%) and lean mass (CR: −3.5 ± 0.7%, EX: −2.2 ± 0.8%), with no significant differences between groups. Significant decreases in thigh muscle volume (−6.9 ± 0.8%) and composite knee flexion strength (−7.2 ± 3%) occurred in the CR group only. Absolute V̇o2 max decreased significantly in the CR group (−6.8 ± 2.3%), whereas the EX group had significant increases in both absolute (+15.5 ± 2.4%) and relative (+28.3 ± 3.0%) V̇o2 max. These data provide evidence that muscle mass and absolute physical work capacity decrease in response to 12 mo of CR but not in response to a similar weight loss induced by exercise. These findings suggest that, during EX, the body adapts to maintain or even enhance physical performance capacity.

Neuroendocrine regulation of energy balance: Implications on the development and surgical treatment of obesity

2017 ◽  
Vol 23 (3) ◽  
pp. 131-146 ◽  
Author(s):  
Gisele Farias ◽  
Bárbara Dal Molin Netto ◽  
Solange Cravo Bettini ◽  
Ana Raimunda Dâmaso ◽  
Alexandre Coutinho Teixeira de Freitas
Keyword(s):  
Weight Loss ◽  
Adipose Tissue ◽  
Gastrointestinal Tract ◽  
Energy Balance ◽  
Public Health Problem ◽  
Neuroendocrine Regulation ◽  
Calorie Intake ◽  
Hormone Signaling ◽  
Sustained Weight Loss

Introduction: Obesity, a serious public health problem, occurs mainly when food consumption exceeds energy expenditure. Therefore, energy balance depends on the regulation of the hunger–satiety mechanism, which involves interconnection of the central nervous system and peripheral signals from the adipose tissue, pancreas and gastrointestinal tract, generating responses in short-term food intake and long-term energy balance. Increased body fat alters the gut- and adipose-tissue-derived hormone signaling, which promotes modifications in appetite-regulating hormones, decreasing satiety and increasing hunger senses. With the failure of conventional weight loss interventions (dietary treatment, exercise, drugs and lifestyle modifications), bariatric surgeries are well-accepted tools for the treatment of severe obesity, with long-term and sustained weight loss. Bariatric surgeries may cause weight loss due to restriction/malabsorption of nutrients from the anatomical alteration of the gastrointestinal tract that decreases energy intake, but also by other physiological factors associated with better results of the surgical procedure. Objective: This review discusses the neuroendocrine regulation of energy balance, with description of the predominant hormones and peptides involved in the control of energy balance in obesity and all currently available bariatric surgeries. Conclusions: According to the findings of our review, bariatric surgeries promote effective and sustained weight loss not only by reducing calorie intake, but also by precipitating changes in appetite control, satiation and satiety, and physiological changes in gut-, neuro- and adipose-tissue-derived hormone signaling.

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