在我国 ,由于经济的发展和生活水平的提高 ,特别是饮食结构西化和活动量的下降 ,肥胖的患病率逐年上升。众多研究已经明确 ,肥胖是糖尿病、心血管疾病发病的独立危险因子 ,可引起高胰岛素血症和胰岛素抵抗 (IR)。肥胖还与胆石症、睡眠呼吸暂停、激素敏感性和胃肠道肿瘤的发生密 In our country, the prevalence of obesity has been increasing year by year due to the economic development and the improvement of living standard, especially the westernization of diet structure and the decrease of activities. Numerous studies have made it clear that obesity is an independent risk factor for the onset of diabetes and cardiovascular disease and can cause hyperinsulinemia and insulin resistance (IR). Obesity is also associated with cholelithiasis, sleep apnea, hormone sensitivity, and gastrointestinal cancer