Ask the Diabetes Educator Archive

Q:

Does grapefruit or grapefruit juice affect insulin or cause blood sugar to have a higher reading?

A:

As far as there being any component in grapefruit that interferes with insulin, none has been identified. In general, drinking juice is not encouraged, as it is quickly converted to sugar. Fresh fruit is a better choice. In the world of juices, grapefruit is a better choice, as it is lower in carbohydrates than other juices; the sweetness of the juice is a good indicator of higher sugar. Those who love grapefruit juice work it into their total intake. Checking your blood sugars 1-2 hours after eating will let you know how your total meal is affecting you. Remember: having diabetes is not about "I can't"; it's about closer planning of what you do. You can still enjoy life!