Behavioral risk factors for overweight and obesity: Diet and physical activity

Understanding the determinants of obesity and developing appropriate prevention and treatment strategies require an in-depth examination of behavioral risk factors for obesity. The goal of this chapter is to review available data regarding the prevalence of overweight and obesity and the modifiable dietary and physical activity behavioral determinants of obesity that are potential targets for obesity prevention and treatment interventions. We begin with an examination of dietary factors that contribute to the development of overweight and obesity. Multiple factors that influence food intake will be discussed, including total energy intake, specific eating patterns, and environmental and societal influences. We then discuss physical activity factors, including exercise self-efficacy, social support, and access to exercise opportunities. The review will focus on behavioral risk factors for obesity in both children and adults.