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1. Helps You Hydrate
Drinking water is an important way to keep your body hydrated.
However, eating foods that have a high water content can also help.
Interestingly, watermelon is 92% water (1).
2. Contains Nutrients and Beneficial Plant Compounds
As far as fruits go, watermelon is one of the lowest in calories — only 46 calories per cup. That's lower than even "low-sugar" fruits such as berries (2).
A cup (154 grams) of watermelon has many other nutrients as well, including these vitamins and minerals:
Vitamin C: 21% of the RDI
Vitamin A: 18% of the RDI
Potassium: 5% of the RDI
Magnesium: 4% of the RDI
Vitamins B1, B5 and B6: 3% of the RDI
Watermelon is also high in carotenoids, including beta-carotene and lycopene. Plus, it has citrulline, an important amino acid.
3. Contains Compounds That May Help Prevent Cancer
Researchers have studied lycopene and other individual plant compounds in watermelon for their anti-cancer effects.
Although lycopene intake is linked to a lower risk of some types of cancer, the results are mixed. The strongest link so far seems to be between lycopene and cancers of the digestive system (1).
Lycopene appears to reduce cancer risk by lowering insulin-like growth factor (IGF), a protein involved in cell division. High IGF levels are linked to cancer (3).
In addition, cucurbitacin E has been investigated for its ability to inhibit tumor growth (4, 5).
4. May Improve Heart Health
Heart disease is the number one cause of death worldwide (6).
Lifestyle factors, including diet, may lower the risk of heart attacks and strokes by reducing blood pressure and cholesterol levels.
Several nutrients in watermelon have specific benefits for heart health.
Studies suggest that lycopene may help lower cholesterol and blood pressure. It can also help prevent oxidative damage to cholesterol (1).
5. May Lower Inflammation and Oxidative Stress
Inflammation is a key driver of many chronic diseases.
Watermelon may help lower inflammation and oxidative damage, since it's rich in the anti-inflammatory antioxidants lycopene and vitamin C (1).
In a 2015 study, lab rats were fed watermelon powder to supplement an unhealthy diet. Compared with the control group, they developed lower levels of C-reactive protein (a marker of inflammation) and less oxidative stress (10).
In an earlier study, humans were given lycopene-rich tomato juice with added vitamin C. Overall, their markers of inflammation went down and antioxidants went up. Watermelon has both lycopene and vitamin C (11).
As an antioxidant, lycopene may also benefit brain health. For example, it may help delay the onset and progression of Alzheimer's disease (12).
6. May Help Prevent Macular Degeneration
Found in several parts of the eye, lycopene helps protect against oxidative damage and inflammation.
It may also help prevent age-related macular degeneration (AMD). This is a common eye problem that can cause blindness in older adults (1).
Lycopene's role as an antioxidant and anti-inflammatory compound may help prevent AMD from developing and getting worse.
7. May Help Relieve Muscle Soreness
Citrulline, an amino acid in watermelon, may reduce muscle soreness.
Interestingly, watermelon juice appears to enhance the bio-availability of citrulline.
One small study gave athletes plain watermelon juice, watermelon juice mixed with citrulline or a citrulline drink. Both watermelon drinks led to less muscle soreness and quicker heart rate recovery, compared to citrulline on its own (13).
8. Is Good for Skin and Hair
Two vitamins in watermelon — A and C — are important for skin and hair health.
Vitamin C helps your body make collagen, a protein that keeps your skin supple and your hair strong.
Vitamin A is also important for healthy skin since it helps create and repair skin cells. Without enough vitamin A, your skin can look dry and flaky.
Both lycopene and beta-carotene may also help protect your skin from sunburn (15).
9. Can Help Improve Digestion
Watermelon contains lots of water and a small amount of fiber — both of which are important for healthy digestion.
Fiber can provide bulk for your stool, while water helps keep your digestive tract moving efficiently.
Eating water-rich and fiber-rich fruits and vegetables, including watermelon, can be very helpful for promoting normal bowel movements.
Posted by: Folashade Odi Enoch.