It works as a natural antiseptic for external wounds, and it functions as a liver tonic. It contains a high water content, which helps in changing the complexion of the skin and increasing the body’s metabolic rate. The pulp and fiber of grapefruits supply healthy bulk to our food intake, which aids bowel movements and reduces chances of colon cancer. It also helps to quench thirst and thus, reduces the burning sensation that arises during fever. The Asia Pacific Journal of Clinical Nutrition suggests that the intake of grapefruit reduces the risk of developing prostate cancer.