What is the Nutritional Value of Watermelon?

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  • Written By: Laura M. Sands
  • Edited By: Heather Bailey
  • Last Modified Date: 31 January 2020
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Not only is watermelon a sweet summertime fruit enjoyed by many people worldwide, but the nutritional value of watermelon assists in increasing energy, as well as in preventing diseases such as prostate and lung cancer. With water being the primary ingredient in this juicy fruit, there are very few calories in watermelon and it is free of cholesterol and saturated fat. Vitamins A, B6 and C also contribute to the nutritional value of watermelon, as do important minerals such as magnesium and potassium.

Watermelon is recognized by health and nutrition experts as an excellent source of vitamin C, which functions as an antioxidant that protects cells against damage from free radicals while also lowering the risk of certain cancers. The nutritional value of watermelon extends even further, however, since it is also a good source of vitamin A and vitamin B6. Vitamin A assists in healthy vision and promotes healthy cellular reproduction, and vitamin B6 is necessary for a healthy nervous system. Other nutrients in watermelon include potassium, iron, magnesium and vitamin B1, also known as thiamin.


As a healthy source of vitamins and minerals, the nutritional value of watermelon may help reduce inflammation associated with arthritis, as well as inflammation due to asthma and diabetes. Cultivated in more than 95 countries worldwide, there are more than 1,200 different varieties of watermelon. Pink watermelon, in particular, is a rich source of lycopene, an antioxidant found to lower the risk of certain cancers including lung cancer, stomach cancer and prostate cancer.

The nutritional value of watermelon may also be credited to its vitamin B content. Vitamin B assists in the production of energy within the body. As a water-soluble vitamin, it is not naturally saved in the body yet it is needed every day. In order to replenish this vitamin and avoid deficiency, foods rich in vitamin B, such as watermelon, mushrooms, wheat germ and leafy green vegetables, have to be consumed daily.

Known scientifically as Citrullis lanatus, the nutritional value of watermelon is also well-regarded by health experts because it is high in citrulline, an ingredient necessary to the production of arginine. Arginine is important to good overall health in that it may lower blood pressure and assist in good arterial performance. The nutritional value of watermelon can be enjoyed by consuming the fruit raw or drinking its juice.


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Post 3

Watermelon, because of its nutritional content, supports the nervous system. Magnesium and B vitamins help brain and nervous system function and protect from illnesses.

For example, B vitamins help fight fatigue and magnesium fights anxiety. It can be dangerous to take these vitamins and minerals through supplements as overdose and toxicity are possible. But overdose is not possible from food so we must eat foods which contain these vitamins and minerals daily.

Post 2

Wow, I didn't realize that watermelon is rich in so many vitamins, minerals and nutrients. It sounds like a great post-workout snack to replenish what is lost through exercise.

Post 1

Watermelon may help with inflammation caused by diabetes but unfortunately, diabetics can't enjoy watermelon because of the sugar content and high glycemic index.

As far as I know, of all fruits, watermelon has the highest or one of the highest sugar content. So it raises blood sugar very quickly. When I was diagnosed with diabetes, I was disappointed to know that I can't have watermelon anymore. I used to love having this fruit on hot summer days. It's so refreshing and the water content fights dehydration as well. I am allowed to have small amounts of melon though because it is less sweet.

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