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Which Summer Fruit Can Help Your Heart, Blood Pressure and Sleep?

Did you know watermelons can help your heart, help you sleep, as well as aid in muscle movement, learning and memory? There’s more! Find out all of the benefits of this tasty fruit and how you can grow your own this summer.

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Who doesn’t love a nice cold slice of watermelon as dessert after a picnic? At only 84 calories per 10 oz wedge, watermelon is an excellent choice even before we consider the health benefits. They contain about 6% sugar, 91% water and are high in vitamins A and C.

Watermelon is well known as a natural diuretic, but also has some surprising antioxidant and heart health benefits.

Antioxidant Action

Antioxidants neutralize the free radicals in the body. While free radicals occur naturally, exposure to pollution, radiation, cigarette smoke and herbicides increases our levels of free radicals and, as a result, our potential risk of cancer. An excellent antioxidant is lycopene, which is linked to cancer prevention. In fact, studies have shown lycopene to be a significant factor in preventing prostate cancer. Watermelon contains about 40% higher lycopene concentration than raw tomato and ranks 5th among major lycopene containing foods in the U.S.

Cardiovascular Benefits

Watermelon also contains the amino acid L-citrulline, which can be converted to L-arginine in the body. L-arginine is an essential amino acid that relaxes blood vessels and improves circulation, contributing to heart health and lower high blood pressure.

Watermelon’s Valuable Nutrient

Another important nutrient in watermelon is choline, which helps us sleep, aids in muscle movement, learning and memory. Choline is vital to maintaining the cellular membranes, which allows for transmission of nerve impulses and the absorption of fat. Choline also reduces inflammation, and can reduce symptoms of chronic inflammatory conditions.

There are well over 500 types of watermelon grown worldwide, and there may be as many as 1,200 varieties. They are divided into two broad categories: icebox and picnic. Icebox types range from 5-15 pounds, while picnic types are larger. Almost everyone knows about the classic large, red watermelon we see in most grocery stores in the U.S., but there are also seedless varieties and even yellow watermelons regularly available in our grocery stores.

Growing Your Own Watermelon

There are many more types of watermelon available than what you see in the grocery stores. If you are planting watermelons, take a look at the varieties of heirloom seeds, or seeds that are harvested from prior plantings on a local basis rather than those seeds available through commercial means.

  1. Watermelons need temperatures over 77 degrees and do best in sandy or well-drained soil.
  2. They can be started indoors in cooler climates.
  3. Watermelons may be attacked by aphids, fruit flies and possibly other bugs and do get plant diseases common in gardens.
  4. This fruit typically takes about 85 days to mature and should be in a “full sun” location.
  5. Create mounds two to four feet apart, and plant in the center of these about 1″ deep.
  6. Sprouts will usually appear in about 7-10 days.
  7. When they are ready, cut the watermelons from the vine.
  8. They will last about 10 days once cut.

Fun Fact About Watermelons: One of the most interesting watermelon growing techniques is that of the Zentsuji region in Japan, where they grow watermelons in glass boxes where they take on the shape – a cubic watermelon!

Cutler, N. (2012). Heart health bulletin: Go ahead, eat watermelon! Institute for Integrative Healthcare Studies. Retrieved on 6/6/15 from

Fiegle, A. (2013). Five reasons to eat watermelon. National Geographic News. Retrieved on 6/6/15 from

Edwards, A.; Vinyard, B.; Wiley, E.; Brown, E.; Collins, J.; Perkins-Veazie, P.; Baker, R. and Clevidence, B. (2003). Consumption of watermelon juice increases plasma concentrations of lycopene and carotene in humans. The Journal of Nutrition. Pp.1043 – 1050.Retrieved on 6/6/15 from

Koontz, E. (2014). Antioxidants: Do you know what they are? Nutrition 411. Retrieved on 6/6/15 from

Trowbridge Filippone, P. (2007). Watermelon varieties – Types of watermelon. About Food. Retrieved on 6/6/15 from

Ware, M. (2015). Watermelon: Health benefits and nutritional information. Medical News Today. Retrieved on 6/6/15 from

Wiki How. How to grow watermelons. Wiki How. Retrieved on 6/6/15 from

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