https://pmc.ncbi.nlm.nih.gov/articles/PMC6456811 Incidence of type 2 diabetes mellitus in men receiving steroid 5α-reductase inhibitors: population based cohort study - PMCAbstract Objective To investigate the incidence of new onset type 2 diabetes mellitus in men receiving steroid 5α-reductase inhibitors (dutasteride or finasteride) for long term treatment of benign prostatic hyperplasia.Design..