Weight loss is often framed as a personal endeavor, but the best outcomes stem from group efforts. Emphasizing the importance of community to curtail the prevalence of obesity is the goal of Walter Willett, chair of the Department of Nutrition at Harvard School of Public Health, and Malissa Wood, assistant professor of medicine at Massachusetts General Hospital, the co-authors of Thinfluence: the powerful and surprising effect friends, family, work, and environment have on weight.
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