6 Fruits and vegetables you should never peel before eating

5. Grapes

Grapes require a lot of pesticides during their growth process if they are to survive but that is not to say you should completely peel off the skin. The skins of red grapes contain resveratrol, a phytochemical which is highly beneficial to the brain and heart. Research also shows that it can slow down the growth of cancer in cellular and animal studies.