The Clock Genes And Meal Timing And Composition A New Approach For The Management Of Obesity And Type 2 Diabetes | 6523
Journal of Obesity & Weight Loss Therapy
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Although dietary restriction often results in initial weight loss, the majority of obese dieters fail to maintain their
reduced weight. Diet-induced weight loss results in compensatory increase of hunger, craving and decreased ghrelin suppression
that encourage weight regain. A high protein and carbohydrate breakfast may overcome these compensatory changes and prevent
In this study 193 obese (BMI 32.2 ? 1.0 kg/m2), sedentary non diabetic adult men and women (47 ? 7 years) were
randomized to a low carbohydrate breakfast (LCb) or an isocaloric diet with high carbohydrate and protein breakfast (HCPb).
Anthropometric measures were assessed every 4 weeks. Fasting glucose, insulin, ghrelin, lipids, craving scores and breakfast meal
challenge assessing hunger, satiety, insulin and ghrelin responses, were performed at baseline, after a Diet Intervention Period
(Week 16) and after a Follow-up Period (Week 32).
At Week 16, groups exhibited similar weight loss: 15.1 ? 1.9 kg in LCb group vs. 13.5 ? 2.3 kg in HCPb group, p = 0.11.
From Week 16 to Week 32, LCb group regained 11.6 ? 2.6 kg, while the HCPb group lost additional 6.9 ? 1.7 kg. Ghrelin levels
were reduced after breakfast by 45.2% and 29.5% following the HCPb and LCb, respectively. Satiety was significantly improved
and hunger and craving scores significantly reduced in the HCPb group vs. the LCb group.
A high carbohydrate and protein breakfast may prevent weight regain by reducing dietinduced compensatory changes
in hunger, cravings and ghrelin suppression. To achieve long-term weight loss, meal timing and macronutrient composition must
counteract these compensatory mechanisms which encourage weight regain after weight loss.
Daniela Jakubowicz, Clinical Professor of Medicine Medical College of Virginia Commonwealth University. She is a Professor of Medical Faculty
Universidad Central de Venezuela. She had more than 35 years of Clinical experience and he did more than 155 original Scientific Publications and
3 in The New England Journal of Medicine Studies. She has awarded for Most Outstanding and Newsworthy Study of San Francisco Endo Meeting
2008. She is presently working as MD and Specialist in Internal Medicine and in Endocrinology in the Diabetes Unit E. Wolfson Medical Center.
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