Self-monitoring of blood glucose, i.e. the regular collection of detailed information on blood glucose levels at numerous timepoints throughout the day, is considered an integral part of self-management for people living with diabetes, especially for people with type 1 diabetes, and people with type 2 diabetes either on insulin therapy, or using non-insulin glucose-lowering drugs that can induce hypoglycaemia [3]. This evidence concerns the gene INS and type 1 diabetes mellitus.