Too much of anything can harm your health — and watermelon is no exception. Despite its high nutritional value, this fruit isn't free of side effects. Diarrhea is a common side effect of eating too much watermelon. This digestive problem can have several causes. The Illinois Department of Public Health warns about the dangers of pre-cut melons.How healthy is watermelon for You?
Watermelon's Nutrients Support Good Health. Watermelon helps you do this, as it provides 25 percent of the daily value of vitamin C and 30 percent of vitamin A in each 2-cup serving. Watermelon also provides you with some calcium, iron and potassium, and is a good source of vitamin B-6, which supports your immune system.