Morbid obesity is a Body Mass Index (BMI) of 40 or more, which is roughly equal to 100 pounds or more over ideal body weight. The disease of morbid obesity interferes with basic physical functions such as breathing or walking. Long-term effects of the disease include shorter life expectancy, serious health consequences in the form of weight-related health problems (co-morbid conditions) such as type 2 diabetes and heart disease, and a lower quality of life with fewer economic and social opportunities.