你可能认为细菌都是有害的,其实不然,人体内脏中有一些天然的细菌可以产生必要的营养物质。科学家们认为这些细菌代谢产物可以降低某些癌症、心脏疾病、消化系统疾病及肠炎等的发病率。他们还认为人体内脏中有益菌水平降低容易引发肠癌。 You may think that bacteria are harmful, but in fact, there are some natural bacteria in the body’s internal organs can produce the necessary nutrients. Scientists think these bacterial metabolites can reduce the incidence of certain cancers, heart diseases, digestive diseases and enteritis. They also believe that reducing the level of beneficial bacteria in the human internal organs easily lead to intestinal cancer.