Overweight and Obesity

Introduction to Overweight and Obesity

Overweight and obesity are defined by body weight that exceeds a recommended range. These conditions are major public health concerns due to their association with chronic diseases and increased health risks.

• Overweight: A condition where body weight is above the recommended range for a given height, but not excessively high.

• Obesity: A more severe condition where excess body fat accumulates to the extent that it may impair health.

Globally, obesity rates have tripled since 1975.

Obesity in America

Obesity is a significant health issue in the United States, affecting both adults and children. The prevalence varies by region, ethnicity, and age group.

• Prevalence among adults: Approximately 42% of U.S. adults are obese.

• Prevalence among children and adolescents: About 20% of children and adolescents are obese.

• The American Medical Association recognizes overweight and obesity as diseases.

Regional Differences in Obesity Prevalence

Obesity rates are not uniform across the United States. Certain regions, such as the South and Midwest, have higher prevalence rates compared to other areas.

• Highest prevalence: Southern states and parts of the Midwest.

• Lowest prevalence: Western states.

Obesity by Ethnicity

Obesity prevalence also varies by ethnicity:

• Non-Hispanic Black adults have the highest obesity rates.

• Non-Hispanic Asian adults have the lowest obesity rates.

Global Trends

• Obesity has more than tripled worldwide since 1975.

• Obesity among individuals aged 2–19 years is at 21% in the U.S.

Example

Which region of the United States has the highest prevalence of overweight and obesity?

• Answer: The South and Midwest regions have the highest prevalence.

Definitions

• Body Mass Index (BMI): A commonly used measure to classify overweight and obesity. It is calculated as:

• Overweight: BMI between 25 and 29.9

• Obesity: BMI of 30 or higher

Table: Obesity Prevalence by Region (Inferred)

Additional info: Table values inferred from CDC data and map shown in the notes.