Source: Watermelon health benefits-https://www.jamaicancookery.com/2015/07/watermelon-health-benefits.html
Watermelon is rich in beta-carotene. Beta-carotene seems to reduce inflammation, improve immune function, protect DNA and help control cell growth in ways that may reduce cancer risk. Watermelon is an excellent source of lycopene, a powerful antioxidant.
Watermelons are nutritionally sound as they are not only low in calories - 51 calories per cup - but are free of fat and cholesterol. They are great for weight control and they settle the stomach well.Melons are laden with vitamin C, which boosts immunity. Their vitamin B6 content aids in the production of haemoglobin. Women on oral contraceptives can always benefit from extra B6 and vitamin C.Lycopene is a naturally occurring chemical known for its cancer-fighting properties. Lycopene is responsible for the red colour of many fruits and vegetables like tomatoes.
It is easy to keep unnecessary weight off by adding copious amounts of watermelon to your diet. It is a proven fact that foods with high water content help in losing weight. Watermelons contain 92 per cent water and will prevent keep the extra pounds away if you take care in controlling other foods in the diet. To maximise health benefits, if the melon is uncut, keep it at room temperature for up to a week or until fully ripe, then refrigerate for up to five days. Uncut watermelon also shows that lycopene and beta-carotene content may increase during room temperature storage. Refrigerate cut melon in a tightly covered container and use within five days. Vitamin C and carotenoid content will drop only a little, if at all, during that time.