Diet is important to reaching glycaemic targets for persons with type 1 diabetes (T1D).1, 2, 3 Carbohydrate counting is used to calculate insulin dose/bolus sizes based on insulin-to-carbohydrate ratio and other parameters, although data on this methods effectiveness on glucose control are conflicting.4, 5, 6 Various types of diets and specific food groups have demonstrated protective effects on cardiovascular risk and are incorporated into dietary guidelines for individuals with diabetes. The gene discussed is INS; the disease is type 1 diabetes mellitus.