The origin of metabolic syndrome is the disordered life style, overeating and lack of exercise, and the accumulation of visceral fat. The disordered life style causes the accumulation of visceral fat, and the accumulation of visceral fat causea atherosclerotic risk factors composing metabolic syndrome via adipocytokines, which are secreted from visceral fat. And finally the metabolic syndorome causes atherosclerotic diseases. The improvement of disordered life style is the most important for the therapy of metabolic syndrome, because the disordered life style is at the upper stream of metabolic syndrome. The improvement of disordered life style has good effects on the all risk factors composing metabolic syndrome. The risk factors composing metabolic syndrome, even if they are not severe, should not be neglected, because the light risk factors gathering make a huge atherosclerotic risk.