Meat, high in fats, has sometimes been linked to cancer, for its digestion requires the creation of large amounts of bile, which later in the intestines can become cancerous tissue.
舉例而言，最近美國雷根總統罹患結腸癌開刀，成為全球最熱門的消息。而結腸癌和攝食過多脂肪、過少纖維素就有密切關係。肉類的脂肪含量高。專家指出，如常食用含脂肪量高的食物，脂肪易在其中的細菌和膽汁相互作用，而產生致癌物質。