Is grapefruit good for you? The juices, peels, and pulps all provide nutritional benefit. Grapefruit carries a range of health benefits.Possible health benefits · Nutritional profile · How to eat more grapefruit. Drinking either orange juice or grapefruit juice provides you with vitamin C, or ascorbic acid. You need vitamin C to protect your cells from the aging process. When you peel away the outer layer of a grapefruit, you may be Fiber is a good thing, and can help lower blood sugar, cholesterol, and.