Approximately 17% (or 12.5 million) of children and adolescents aged 2???19 years are obese and presently more than 1 billion overweight adults world wide out of them at least 300 million of them are obese ---- (reference WHO survey)Obesity and overweight pose a major risk for chronic disease, including type 2 diabetes, cardiovascular disease, hypertension stroke, and certain forms of cancer, etc.