TY - JOUR T1 - Weight-loss challenges unifying communities around health: Group contests motivate participants JF - The Nation's Health JO - Nations Health SP - 1 LP - 14 VL - 43 IS - 3 AU - Natalie McGill Y1 - 2013/04/01 UR - http://www.thenationshealth.org/content/43/3/1.1.abstract N2 - Prompted by growing rates of obesity in their states and communities, some leaders are using a new type of campaign to engage residents in health changes: the weight-loss challenge. ER -