Published online Jan 6, 2023. doi: 10.12998/wjcc.v11.i1.65
Peer-review started: September 19, 2022
First decision: October 21, 2022
Revised: November 12, 2022
Accepted: December 15, 2022
Article in press: December 15, 2022
Published online: January 6, 2023
Processing time: 107 Days and 8.2 Hours
Diabetes mellitus (DM) is a complicated, globally expanding disease that is influenced by hereditary and environmental variables. Changes in modern society's food choices, physical inactivity, and obesity are significant factors in the development of type 2 DM (T2DM). The association between changes in intestinal flora and numerous disorders, including obesity, diabetes, and cardiovascular diseases, has been studied in recent years. The purpose of this review is to analyze the mechanisms underlying the alteration of the diabetic patients' intestinal flora, as well as their therapeutic choices. Also included is a summary of the anti-diabetic benefits of natural compounds demonstrated by studies. The short-chain fatty acids theory, the bile acid theory, and the endotoxin theory are all potential methods by which intestinal flora contributes to the establishment and progression of T2DM. Due to an intestinal flora imbalance, abnormalities in short-chain fatty acids and secondary bile acids have been found in diabetic patients. Additionally, metabolic endotoxemia with altering flora induces a systemic inflammatory response by stimulating the immune system via bacterial translocation. The agenda for diabetes treatment includes the use of short-chain fatty acids, probiotics, prebiotics in the diet, fecal bacteria transplantation, and antibiotics. Animal studies have proven the antidiabetic benefits of numerous bioactive substances, including Flavonoids, Alkaloids, Saponin, and Allicin. However, further research is required to contribute to the treatment of diabetes.
Core Tip: It is thought that intestinal flora may have a role in the development of type 2 diabetes mellitus. This has been demonstrated in the treatment of type 2 diabetes mellitus and that the course of the disease might differ depending on the medications used for intestinal flora imbalance.