Increasingly common in the United States, obesity is caused by the increase in the size and the amount of fat cells in the body. Doctors measure body mass index (BMI) and waist circumference to screen for and diagnose obesity.

Obesity is a serious medical condition that can cause high blood pressure, heart disease, atherosclerosis, diabetes, high blood cholesterol, various cancers, sleep disorders and metabolic syndrome. Treatment depends on the cause and severity of your condition, as well as whether you have complications.

Treatments include lifestyle changes including healthier eating and increased physical activity, as well as Food and Drug Administration (FDA)-approved weight-loss medicines.

Surgery may be a treatment option for some people. Learn about the ORBERA® balloon.