Obesity is a condition in which excess body fat has accumulated to such an extent that health may be negatively affected.
A combination of excessive caloric intake, lack of physical activity, and genetic susceptibility is thought to explain most cases of obesity, with a limited number of cases due solely to genetics, medical reasons, or psychiatric illness.
Excessive body weight is associated with various diseases, particularly cardiovascular diseases, diabetes mellitus type 2, obstructive sleep apnea, certain types of cancer, and osteoarthritis.
The primary treatment for obesity is dieting or a good fast weight lose program and physical exercise.
If this fails, anti-obesity drugs and (in severe cases) bariatric surgery can be tried.