美国哈佛大学公共卫生学院的威立特(Willett)博士在美国科学进步年会上称,目前由于肥胖引发的肿瘤相关死亡人数正逐年上升,在男性和女性中分别达到了14%和20%,而由于吸烟而引发的肿瘤死亡则为30%。如果按此形势继续发展下去,则在不久的将来,肥胖完全有可能取代吸烟而成为肿瘤的头号危险因素。 Dr. Willett of the Harvard School of Public Health in the United States said at the American Scientific Progress Conference that the current number of cancer-related deaths due to obesity is increasing year by year, reaching 14% and 20% in men and women respectively. The cancer death caused by smoking is 30%. If this situation continues to develop, then in the near future, obesity may completely replace smoking and become the number one risk factor for cancer.