Metformin is a common type 2 diabetes drug. Recently, it was found to extend life span of young non-diabetic animals but the responses of older organisms to metformin remain unexplored. Researchers at the Leibniz Institute on Aging—Fritz Lipmann Institute (FLI) in Jena, Germany, and the Friedrich Schiller University Jena found that mitochondrial dysfunction abrogates metformin […]