Everyone with diabetes—whether type 1 or type 2—should know that the amount of carbohydrate in meals has in impact on insulin dosing. In general, the more carbs, the more insulin you need. Less well known is that dietary protein and fat also have an effect on insulin requirements. It’s complicated, and there’s quite a bit of variation from one individual to another. The study at hand involved folks with type 1 diabetes using an insulin pump. The test meal was a piece of bread (pane di casa, 45 g carb) plus avocado and other fats in varying amounts.
From Diabetes Care:
The current study has two important outcomes. First, the type of fat has no statistically or clinically significant impact on postprandial glycemia, but the amount of fat has a significant, dose-dependent effect. Second, the insulin delivery pattern, and in some cases total dose, needs to be adjusted based on the amount of fat in order to minimize the risk of early postprandial hypoglycemia and late postprandial hyperglycemia.
Steve Parker, M.D.