5 doctors weighed in: Does alcohol thin the blood? 5 doctors weighed in Want a second opinion? Blood actually doesn't get thinned.  what we call blood thinners are agents that decrease the ability of the blood to clot, usually used in people whose blood clots excessively.
However, due to its very high water content, the same amount of watermelon that provides us with 16% of the DRI for vitamin C only costs us about 46 calories, or about 2% of our total daily calories on a 1800-2000 calorie diet.
In a 100 gram serving, watermelon fruit supplies 30 calories and low amounts of essential nutrients (table). Only vitamin C is present in appreciable content at 10% of the Daily Value (table). Watermelon fruit is 91% water, contains 6% sugars, and is low in fat (table). The amino acid citrulline is produced in watermelon rind. Watermelon pulp contains carotenoids, including lycopene.