Obesity is a chronic health condition involving excess body fat that can affect health. It is commonly screened with body mass index, or BMI, though BMI does not describe every person's body composition or health.
Why obesity matters
Obesity can increase the risk of type 2 diabetes, high blood pressure, sleep apnea, heart disease, fatty liver disease, joint pain, and some pregnancy complications.
More than willpower
Body weight is influenced by genetics, hormones, sleep, medications, mental health, food environment, activity, medical conditions, and social factors.
Because obesity is complex, respectful medical care focuses on health, risk factors, and sustainable support rather than blame.