Food and Activity

People gain weight when they eat more calories than they burn through activity. This imbalance is the greatest contributor to weight gain.

Environment

The world around us influences our ability to maintain a healthy weight. For example:

• Not having area parks, sidewalks, and affordable gyms makes it hard for people to be physically active.
• Oversized food portions increase Americans’ calorie intake, making even more physical activity necessary to maintain a healthy weight.
• Some people don’t have access to supermarkets that sell affordable healthy foods, such as fresh fruits and vegetables.

Genetics

Health Conditions and Medications