A medical condition caused due to the accumulation of excess body fat, obesity increases the risk of several other diseases and health problems such as high blood pressure, type 2 diabetes, cardiovascular diseases, osteoarthritis, and depression. A person is considered obese when his body mass index (BMI) is over 30 kg/m2. A healthy, well-balanced diet and an active lifestyle can easily prevent this disorder by eliminating excess fat from the body and bringing the BMI down to normal.