美国癌症学会最近公布的一项最新报告显示:自1992年以来,美国的癌症发病率已呈下降趋势。这对美国公民来说不失为一条令人鼓舞的消息,同时,给其他国家的防癌工作也带来了诸多启示。为什么在多数国家癌症发病率不断上升的情况下,美国人癌症发病率反而下降呢?如果简单地把这一现象归因于美国医学科技发达、物质生活水平很高等来解释的话,未必能令人信服,甚至可能还自相矛盾。因为医学科技发达,检测手段先进,反而可使癌症检出率大大提高;营养过剩,运动减少等正是癌症发病的诱因之一。其实。从美国有 A recent report released by the American Cancer Society shows that since 1992, the incidence of cancer in the United States has shown a downward trend. This is an encouraging news for U.S. citizens. At the same time, it also brings inspiration to anti-cancer work in other countries. Why does the incidence of cancer in the United States drop in the case of rising cancer rates in most countries? If this is simply attributed to the advanced medical science and technology in the United States and the high material standards of living, it may not be able to explain why Convinced may even be self-contradictory. Because of advanced medical technology and advanced detection methods, the detection rate of cancer can be greatly increased; excess nutrients and reduced exercise are just one of the causes of cancer. in fact. From the United States