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过去30多年,在癌症研究方面取得了重大进展。其中最重要的发现之一,是对环境在癌形成中的作用程度的认识。据估计,全部癌中有80％—90％是由环境因素(包括饮食和其他的生活习惯方面的因素)引起的。因此,大多数癌是能够预防的。不少研究者认为,饮食对癌的发生的影响可能比吸烟还要大。据专家们估计,癌症中有35％是由饮食引起的。生物学教师要尽一切努力教育学生,使他们懂得如何减少癌的危险。下面就饮食与癌的发生问题提出一些看法。
Over the past 30 years, significant progress has been made in cancer research. One of the most important findings is the recognition of the extent to which the environment plays a role in the development of cancer. It is estimated that 80% -90% of all cancers are caused by environmental factors, including diet and other lifestyle factors. Therefore, most cancers are preventable. Many researchers believe that the impact of diet on the incidence of cancer may be even greater than smoking. Experts estimate that 35% of cancers are caused by diet. Biology teachers should make every effort to educate students so that they understand how to reduce the risk of cancer. The following questions on the incidence of diet and cancer put forward some views.