What Causes Obesity?

When you take in more calories than you burn off, you gain weight. How you eat, how active you are, and other things affect how your body uses calories and whether you gain weight.

If your family members are obese, you may have inherited a tendency to gain weight. And your family also helps form your eating and lifestyle habits, which can lead to obesity.

Also, our busy lives make it harder to plan and cook healthy meals. For many of us, it's easier to reach for prepared foods, go out to eat, or go to the drive-through. But these foods are often high in fat and calories. Portions are often too large. Work schedules, long commutes, and other commitments also cut into the time we have for physical activity.

There is no quick fix to being overweight. To lose weight, you must burn more calories than you take in.