The Grapefruit is a citrus fruit from the grapefruit tree. This citrus fruit has a thick orange peel and a pulpy flesh with a bitter taste. The flesh is segmented and ranges in color from pale yellow to dark pink, depending on the variety. Low in calories, the grapefruit has significant antioxidant power and a low glycemic load. This refreshing fruit, rich in vitamin C, has multiple health benefits, especially against cancer and cardiovascular diseases.