Type 2 diabetes is the epidemic of the 21st Century. There are 415 million people living with diabetes worldwide, and 90 per cent of them have Type 2. It’s increasing, costly and life-changing. Diabetes is the single largest cause of amputations, stroke, blindness and kidney failure. So are we doing enough to prevent it? Can we use our understanding of genetics to improve treatment and care? Professor Anna Gloyn (Oxford Centre for Diabetes Endocrinology & Metabolism and Wellcome Trust Centre for Human Genetics, University of Oxford) shares her view.