A Long Journey

Contributing Factors

Overweight and Obesity: An Overview

Is there a quick answer to the question, “what contributes to overweight and obesity?”

Overall there are a variety of factors that play a role in obesity. This makes it a complex health issue to address. This section will address how behavior, environment, and genetic factors may have an effect in causing people to be overweight and obese.

  • Overweight and obesity result from an energy imbalance. This involves eating too many calories and not getting enough physical activity.
  • Body weight is the result of genes, metabolism, behavior, environment, culture, and socioeconomic status.
  • Behavior and environment play a large role causing people to be overweight and obese. These are the greatest areas for prevention and treatment actions.

Adapted from U.S. Surgeon General’s Call to Action to Prevent and Decrease Overweight and Obesity, 2001

Obesity In Children (NS2)

Childhood Overweight and Obesity

Obesity is a serious health concern for children and adolescents. Data from NHANES surveys (1976–1980 and 2003–2006) show that the prevalence of obesity has increased: for children aged 2–5 years, prevalence increased from 5.0% to 12.4%; for those aged 6–11 years, prevalence increased from 6.5% to 17.0%; and for those aged 12–19 years, prevalence increased from 5.0% to 17.6%.1, 8

Obese children and adolescents are at risk for health problems during their youth and as adults. For example, during their youth, obese children and adolescents are more likely to have risk factors associated with cardiovascular disease (such as high blood pressure, high cholesterol, and Type 2 diabetes) than are other children and adolescents.2

Obese children and adolescents are more likely to become obese as adults.3, 4 For example, one study found that approximately 80% of children who were overweight at aged 10–15 years were obese adults at age 25 years.3 Another study found that 25% of obese adults were overweight as children.5 The latter study also found that if overweight begins before 8 years of age, obesity in adulthood is likely to be more severe.

This Web site provides information about childhood overweight and obesity, including how overweight and obesity are defined for children, the prevalence of obesity, the factors associated with obesity, and the related health consequences.

Article from Centers for Disease Control & Prevention

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