Effect of High-fat Low-carbohydrate Diet on the Structure of Intestinal Flora in T2DM Patients: A Narrative Review

High-fat low-carbohydrate diets are currently popular as one of the methods of weight loss, and the influence of this diet on the structure of intestinal flora in T2DM is a topical issue in the field of research. Despite the controversial result of the studies published so far in patients with type 2 diabetes. As one of the important microbial symbiotic systems in the human body, the intestinal flora is considered to be closely related to the development of type 2 diabetes. The intestinal flora structure abundance of type 2 diabetes patients is different from that of the general healthy population, and alterations in the structure of the intestinal flora can affect intestinal hormone secretion, which in turn affects the blood glucose level in type 2 diabetic patients. It is feasible to treat type 2 diabetes by altering the intestinal flora. Therefore, this narrative review proposes that the possible reason for the treatment of T2DM by high-fat low-carbohydrate diet is that the method of high-fat low-carbohydrate diet alters the intestinal flora structure of patients with T2DM, and treats patients with T2DM by altering their intestinal flora structure, which provides some new ideas and methods for the treatment and prevention of T2DM.