以前的研究表明体质指数(BMI)与全死因死亡率有关,似乎非常胖和非常瘦的人死亡率升高。但是,其它因素,如年龄、种族、性别、吸烟、疾病流行如何影响死亡率与BMI的关系却并不清楚。最近,美国癌症协会的研究者完成了一项前瞻性研究,研究包括100多万男女成年人,其目的是研究BMI与 Previous studies have shown that body mass index (BMI) is related to all-cause mortality, and it seems that fatal and very lean people have increased mortality. However, other factors, such as age, race, gender, smoking, and how the epidemic affects the relationship between mortality and BMI are unclear. Recently, the American Cancer Society researchers completed a prospective study that included more than 1 million male and female adults whose purpose was to study BMI and