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OVERVIEW: The obesity epidemic remains a significant health problem in the United States and worldwide, with multiple associated physical and societal costs. To contribute to obesity's treatment and prevention, nurses must be conversant in a wide range of theoretical and clinical perspectives on the problem. This article, the first in a two-part series, defines the terms used in the treatment of obesity and outlines pathophysiologic, psychological, and social factors that influence weight control. Part 2, which will appear in next month's issue, presents a theoretical framework that can be used to guide nursing assessment of both patient and family, thereby informing intervention.
