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.
One of the best watermelon health benefits is that it aids in healthy weight loss too. Yes, given its high water content, watermelon can fill you up for fewer calories (37). Water has also been found to speed up metabolism and flush out toxins and fats, which eventually might contribute to weight loss (38).