Obesity is a medical condition, considered a disease by multiple organizations, [8][9][10] in which excess body fat has accumulated to such an extent that it can have negative effe

Dec 2, 2025 · Although there are genetic, behavioral, metabolic and hormonal influences on body weight, obesity occurs when you take in more calories than you burn through typical

Obesity increases the risk of serious medical conditions. Treatments include changing what you eat, adding activity and mental health support. Obesity has direct and indirect effec

In 2022, 1 in 8 people in the world were living with obesity. Worldwide adult obesity has more than doubled since 1990, and adolescent obesity has quadrupled. In 2022, 2.5 billion

Obesity accounts for nearly $173 billion in medical expenditures in 2019 dollars. The prevalence of obesity among U.S. adults 20 and over was 41.9% during 2017–March 2020. 1 Duri

Mar 20, 2026 · Obesity is an excess of body fat. It is difficult to directly measure body fat. Body mass index (BMI) is a popular method of defining a healthy weight. BMI should b

Sep 2, 2025 · Obesity is a disease that means having too much body fat. It is different from being overweight, which means weighing too much. Both terms mean that your weight is g

Jan 6, 2026 · Obesity is a chronic disease diagnosed when a person's BMI is 30 or higher. Obesity increases the risk of health issues like heart disease, type 2 diabetes, and high

Mar 24, 2022 · Overweight and obesity are caused by many factors including behaviors like eating patterns, lack of sleep or physical activity, and some medicines, as well as genet

May 1, 2026 · obesity, excessive accumulation of body fat, usually caused by the consumption of more calories than the body can use. The excess calories are then stored as fat, or