Fiber is related at a risk for some diseases, particularly some cancers, and therefore the low fiber intake that we have now compared to what our ancestors had is a factor.

纤维素可以抵抗一些疾病,尤其是某些癌症,相对古人来说我们摄入量偏低,因此我们对一些癌症的抵抗能力就低

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选