Despite popular belief that watermelon is made up of only water and sugar, watermelon is actually considered a nutrient dense food, a food that provides a high amount of vitamins, minerals and antioxidants for a low amount of calories.
Watermelons have become synonymous with summer and picnics, and for good reason. Their refreshing quality and sweet taste help to combat the heat and also provide a guilt-free, low maintenance dessert for kids and adults alike to enjoy.
Along with cantaloupe and honeydew, watermelons are a member of the botanical family Cucurbitaceae. There are five common types of watermelon: seeded, seedless, mini (also known as personal), yellow and orange.
This MNT Knowledge Center feature is part of a collection of articles on the health benefits of popular foods. It provides a nutritional breakdown of watermelon and an in-depth look at its possible health benefits, how to incorporate more watermelon into your diet and any potential health risks of consuming watermelon.
Nutritional breakdown of watermelon

Along with cantaloupe and honeydew, watermelons are a member of the botanical family Cucurbitaceae.
One cup of diced watermelon (152 grams) contains 43 calories, 0 grams of fat, 2 grams of sodium, 11 grams of carbohydrate (including 9 grams of sugar and 1 gram of fiber) and 1 gram of fiber. One cup of watermelon will provide 17% of vitamin A, 21% of vitamin C, 2% of iron and 1% of calcium needs for the day.
Watermelon also contains thiamin, riboflavin, niacin, vitamin B-6, folate, pantothenic acid, magnesium, phosphorus, potassium, zinc, copper, manganese, selenium, choline, lycopene and betaine. According to the National Watermelon Promotion Board, watermelon contains more lycopene than any other fruit or vegetable.
Despite being a great source of the above nutrients, watermelon is made up of 92% water.
(Excerpt taken from Medical News Today. Originally published: Sunday 10/6/13)