日本国立癌中心研究小组最近发现长期食用高蛋白食物易患膀胱癌,这已通过动物实验得到证实。在美国和加拿大等欧美地区减肥食品风行,为防止肥胖,人们减少脂肪及碳水化合物的摄入,而大量食用高蛋白食物。据统计,这些地方的膀胱癌发病率要比日本高出4倍。日本科学家由此推断出其原因是由于蛋白质摄入过多所致。他们认为,在构成蛋白质的20种氨基酸中与膀胱癌关连最为密切的是白氨酸和异白质酸,并将这两种氨基酸以2～4%的比例混入饲料中喂食老鼠,结果,60个星期后有70%以上的老鼠患上了膀胱癌。 Japan’s National Cancer Center research team recently found that long-term high-protein foods prone to bladder cancer, which has been confirmed by animal experiments. In the United States and Canada, Europe and the United States diet food popular, in order to prevent obesity, people reduce the intake of fat and carbohydrates, but a lot of high-protein foods. According to statistics, the incidence of bladder cancer in these places is 4 times higher than in Japan. Japanese scientists concluded that the reason is due to excessive protein intake due. They believe that among the 20 kinds of amino acids constituting proteins, the most closely related to bladder cancer is leucine and hemagglutinin, and these two kinds of amino acids are fed into the feed at a ratio of 2 to 4%, and as a result, 60 More than 70% of mice developed bladder cancer a week later.