A reduction in the total body mass by means of loss of fluid, body fat, adipose tissue, tendon, muscle, bone mineral deposits and connective tissue is referred as weight loss in medical terms, physical fitness and health. Unintentional weight loss occurs in underlying diseases and it occurs intentionally with individual’s consciousness by way of stern effort to reduce overweight. Intentional weight loss means loss of total body mass to improve health and it may be to change the appearance. An individual who is overweight may reduce the weight by therapy and it may reduce the risk of having certain diseases like diabetes and heart attack.