Other than diabetes, what good does metformin do? does it cause cancer if taken for a long time?

Type 2 diabetes: Metformin is primarily used for type 2 diabetes, but is increasingly being used in polycystic ovary syndrome , non-alcoholic fatty liver disease and premature puberty, three other diseases that feature Insulin resistance; these indications are still considered experimental. The benefit of metformin in nafld has not been extensively studied and may be only temporary.

Multiple beneficial: Effects in obese patients, decreased risk heart attacks it seems to decrease risk of multiple cancers in diabetic patients it can be used to treat fatty liver it can treat hot flashes in women.

Very helpful: It's a very effective medication used to treat Insulin resistance. It does not cause cancer. In fact, it can decrease risk of developing cancers in diabetic pts.