Another study finds metformin lowers dementia risk, but there's a catch

Another study has linked the popular drug used to treat type-2 diabetes, metformin, with a decreased risk of developing Alzheimer’s disease later in life, but that may not mean what you think it does. Dementia, including Alzheimer’s, is believed to be caused by a variety of genetics and lifestyle factors, with the latter having a massive influence — so much …