title: Obesity: a complex public health challenge.
authors.forename: Joseph S
authors.initials: JS
authors.lastname: Alpert
authors.forename: Pamela J
authors.initials: PJ
authors.lastname: Powers
mesh_terms: D005247:Feeding Behavior; D006293:Health Promotion; D006801:Humans; D008019:Life Style; D009765:Obesity / Q000453:epidemiology* / Q000517:prevention & control* / Q000523:psychology; D010819:Physician's Role; D014481:United States / Q000453:epidemiology