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Do Obese Patients after Weight Loss Become Metabolically Normal?Makoundou V.a · Pataky Z.a · Bobbioni-Harsch E.a · Gachoud J.P.b · Golay A.a
a Service of Therapeutic Education for Chronic Diseases, Department of Community Medicine and Primary Care, Geneva University Hospital, b Roche Pharma (Schweiz) AG, Basel, Switzerland Corresponding Author
Prof. Dr. Alain Golay, Service of Therapeutic Education for Chronic Diseases, WHO Collaborating Centre, Department of Community Medicine and Primary Care, Geneva University Hospital, 1211 Geneva 14, Switzerland, Tel: +41 22 372 97–26, Fax -15, firstname.lastname@example.org
Objective: To compare the metabolic cardiovascular risk factors of obese patients after weight loss and 4-year weight loss maintenance afterwards against a matched control group of subjects with a stable body weight and without history of weight loss. Method: 50 obese non-diabetic subjects in the study group who previously lost 10% or more of their weight and afterwards entered a 4-year weight loss maintenance programme were matched by age, BMI and sex and compared to 50 weight-stable subjects without history of weight loss. The comparison between both groups was done in term of anthropometrical, metabolic and biological characteristics, early atherosclerosis and insulin sensitivity. Results: Anthropometrical, metabolic and biological characteristics were similar between the weight loss group and the control matched group. However, insulin sensitivity was still significantly lower in the weight loss than in the matched control group (p = 0.02). Intima media thickness (IMT) also was similar in both groups. We found that lower atherosclerosis measured by IMT at the level of the carotid is associated with better insulin sensitivity (p < 0.05). After the 4-year weight loss maintenance programme, insulin sensitivity improved in the post-weight loss group from 7.9 ( 3.2 to 8.4 ( 3.6 mg/kg/min. Conclusion: All cardiometabolic parameters of obese subjects, except for insulin sensitivity, normalised completely after weight loss. The latter was improved by a weight loss maintenance programme if successfully completed.
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