Obesity is a chronic condition in the body where excess fat accumulation in the body, exceeds the limits good for health. Obesity not only affects the physical appearance of the sufferer, but also increases the risk in other health conditions, such as heart disease, diabetes, and high blood pressure. Obesity and overweight are two different concepts. Overweight is a condition in which there is excess weight gain. However, weight gain is not only caused by excess fat, but can also be caused by muscle mass or fluid in the body. These conditions can have harmful effects on health.