Watermelon is a sweet and refreshing low calorie summer snack. It provides hydration and also essential nutrients, including vitamins, minerals, and antioxidants.
Along with cantaloupe, honeydew, and cucumber, watermelons are a member of the Cucurbitaceae family.
There are five common types of watermelon: seeded, seedless, mini, yellow, and orange.
In this article, learn more about the possible health benefits and nutritional content of watermelon, some tips for serving it, and who should limit it.
Watermelon is around 90% water, which makes it useful for staying hydrated in the summer. It can also satisfy a sweet tooth with its natural sugars.
Watermelon also contains antioxidants. These substances can help remove Trusted Source molecules known as free radicals, or reactive species, from the body. The body produces free radicals during natural processes, such as metabolism. They can also develop through smoking, air pollution, stress, and other environmental pressures.
If too many free radicals stay in the body, oxidative stress can occur. This can result in cell damage and may lead to a range of diseases, such as cancer and heart disease.
The body can remove some free radicals naturally, but dietary antioxidants support this process.
Below are some of the ways antioxidants and other nutrients in watermelon may help protect a person’s health.
Asthma prevention
Some experts Trusted Source believe that free radicals contribute to the development of asthma. The presence of certain antioxidants in the lungs, including vitamin C, may reduce the risk of having asthma.
Studies have not confirmed that taking vitamin C supplements can help prevent asthma, but a diet that is rich in vitamin C may offer some protection.
free radicals contribute to the development of asthma. The presence of certain antioxidants in the lungs, including vitamin C, may reduce the risk of having asthma.
Studies have not confirmed that taking vitamin C supplements can help prevent asthma, but a diet that is rich in vitamin C may offer some protection.
Blood pressure:
In a 2012 study, researchers found that watermelon extract reduced blood pressure in and around the ankles of middle-aged people with obesity and early hypertension. The authors suggested that L-citrulline and L-arginine — two of the antioxidants in watermelon — may improve the function of the arteries.
Lycopene:
— another antioxidant in watermelon — may help protect against heart disease. A 2017 reviewTrusted Source suggested that it might do this by reducing inflammation linked with high-density lipoprotein (HDL) or “good” cholesterol.
Phytosterols are plant compounds that may help manage low-density lipoprotein (LDL) or “bad” cholesterol. Some guidelines Trusted Source recommend consuming 2 grams (g) of phytosterols each day. 154 g of watermelon balls provides a small amount, at 3.08 mg.
Reducing LDL cholesterol may help prevent high blood pressure and cardiovascular disease (CVD), but the precise impact of phytosterols on CVD remains unclear.
Cancer:
The National Cancer InstituteTrusted Source (NCI) note that free radicals can play a role in the development of some types of cancer. The oxidative stress they cause can result in DNA cell damage.
Dietary antioxidants in watermelon, such as vitamin C, may help prevent cancer by combatting free radicals.
Digestion and regularity:
Watermelon has high water content and also provides some fiber. These nutrients help promote a healthy gut by preventing constipation and promoting regularity of bowel movements.
Hydration:
Watermelon is around 90% water and also provides electrolytes, such as potassium. This makes it a healthful choice of snack during the hot summer months.
People can eat watermelon fresh, as juice, or frozen in slices for a tasty cold Popsicle-style snack.
Brain and nervous system:
Choline is another antioxidant that occurs in watermelon.
It contributesTrusted Source to the following functions and activities:
muscle movement
learning and memory
maintaining the structure of cell membranes
the transmission of nerve impulses
early brain development
One theory suggests that choline may help slow the progression of dementia in Alzheimer’s disease, but there is not enough evidence to confirm this.
Muscle soreness:
Watermelon and watermelon juice may reduce muscle soreness and improve recovery time following exercise in athletes.
In a 2017 study Trusted Source, athletes drank either half a liter of either a placebo or watermelon juice with added L-citrulline, 2 hours before running a half marathon race. Those who consumed the watermelon drink reported less muscle soreness 24–72 hours after the race.
It is unclear whether consuming watermelon juice without added L-citrulline would have the same effect.
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