Consuming probiotics is beneficial for treating metabolic diseases such as obesity, diabetes and non-alcoholic fatty liver disease, which are a global health problem.

Obesity, diabetes and non-alcoholic fatty liver disease (NAFLD, which is excessive fat accumulation in the liver) are a growing global health problem. Researchers believe that lifestyle, especially a poor diet, contributes to the rapid progression of these diseases. Studies show that patients with metabolic diseases such as type 2 diabetes, obesity and NAFLD also have dysbiosis, which is an imbalanced gut microbiota. Dysbiosis is characterized by decreased levels of beneficial bacteria.  Metformin, a common drug given to type 2 diabetes patients to regulate blood sugar levels, modulates the gut microbiota in a way that leads to improved blood glucose levels.