Watermelon originated in Africa and has been cultivated since ancient times in the Mediterranean region, Egypt and India.
One slice of watermelon (485 g) contains 152 calories, 3 g protein, 34.6 g carbohydrates, 2.4 g fiber, 560 mg potassium, 176 mg vitamin A (RE), 47 mg vitamin C, 0.3 mg thiamin, 0.1 mg riboflavin, and 0.96 mg niacin.
Watermelon is rich in lycopene, glutathione and vitamin C. Water melon also reduce the blood cholesterol and maintain the body fat. It has great activity against cancers and some antibacterial, anticoagulant activity.