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.
It would be a mistake to ignore the important amount of vitamin C found in watermelon. In our Food Rating System, watermelon qualifies as very good source of vitamin C, even though the amount provided (about 12 milligrams per cup of fresh melon) is only 16% of the Dietary Reference Intake (DRI).ndividual Concerns. Watermelon is not a commonly allergenic food, is not known to contain measurable amounts of oxalates or purines and is also not included in the Environmental Working Group's 2012 report Shopper's Guide to Pesticides as one of the 12 foods most frequently containing pesticide residues.