Safety and Efficacy of Human Microbiota Transplantation for Overweight and Obese Type 2 Diabetes Mellitus

"Patients will randomized to a fecal microbiota transplantation by using a nasointestinal tube for 3 times in 4 weeks(0,2,4) without undergoing an enema before the treatment.~The amount of FMT is 200ml at one time. Patients are given the same lifestyle guidance and nutritional advice."

"Patients will receive an equivalent volume of normal saline and glycerin/food coloring via a nasointestinal tube (sham transplantation) for 3 times in 4 weeks(0,2,4) without undergoing an enema before the treatment.~The amount of placebo FMT is 200ml at one time. Patients are given the same lifestyle guidance and nutritional advice."