An important link discovered between our gut microbiota and a number of "lifestyle" diseases, the incidence of which, worryingly, is rising fast. These include obesity, type 2 diabetes, atherosclerosis, and non-alcoholic fatty liver disease. They do this through the regulation of glutathione and amino acid metabolism.
As the article says: "Glutathione is our body's most powerful antioxidant and the main detoxifying agent in the body. It plays a vital role in enabling the immune system, nutrient metabolism and regulation of other important cellular events. Glutathione is a very small protein, produced inside the cells from three amino acids ultimately obtained from our food or supplementation. The deficiency of glutathione contributes to oxidative stress, which plays a major role in the mechanisms of above mentioned complex disorders."