this exceeds energy expendoture.this exceess energy is converted into body fat AKN.consequently there is everweight or obes.obesity can be caused by overeating, in terus carbohidrat ,fat ,and protein,but also due to less moving.obesity can cause disturbances in the body function,is a risk to suffer from chronic illnesses,such as diabetes mellitus,hppertension, corony heart diseasea cancer,and can shorten life expectancy