Many people's obesity is the result of multiple factors. Professor Zhao Liping is mainly engaged in the research of intestinal microorganisms. As far as I know, his research started with transplanting fecal bacteria to study the difference between normal people and obese people. In obese mice, it seems that strains extracted from normal mouse feces have been directly transplanted. In fact, it is to improve the intestinal flora structure of little girls. This process should be regulated by diet. At present, I don't know whether fecal bacteria transplantation can be directly used in human body, and the effect is more reliable.