There are numerous health benefits in grapefruit
Fresh squeezed grapefruit juice contains vitamin C, or ascorbic acid. Vitamin C plays a central role in maintaining your tissue integrity -- it helps your body produce collagen, a structural protein that provides stability to several tissues throughout your body.
Fresh-squeezed grapefruit also provides a source of vitamin A. Grapefruit, particularly red and pink varieties, contains beta-carotene, a pigment molecule that gives the fruit its color. Beta-carotene in grapefruit is converted to vitamin A in your body and then carries out a number of physiological functions. Adequate vitamin A intake supports your immune system, helps maintain healthy retinas and acts as an antioxidant in your body. It also aids in cellular communication, and vitamin A helps your cells develop to form functional tissue.
Grapefruit juice benefits your nervous and musculoskeletal systems due to its potassium content. Potassium plays a central role in nerve function. The flow of potassium out of your nerve cells helps trigger an electrochemical signal, called an action potential, that is essential for nerve communication. Action potentials also allow your nerves to interact with your muscle fibers, and potassium helps stimulate the muscle contractions required for muscle movement.