How Much Sugar is in Watermelon?

Watermelon is extremely high in natural sugar, and has a high glycemic peak. My nutritionist recommened that i eat the other melons, instead. The best way to find out how it affects you personally is this: Test your bood glucose level 2 hours after a meal then eat about 1/2 cup of watermelon, then test for blood glucose again one hour after you take the first bite.