Medically reviewed by Melissa Nieves, LND Raisins are dehydrated grapes and come in two varieties: black (from red grapes) ...

Improve Cardiovascular Health One of the best-known benefits of resveratrol is ... found in the skins of red and black grapes, is what gives red wine its heart-healthy properties.

That's one chemical that does seem to have some healthy benefits to it. Narrator Resveratrol is an antioxidant that is found in certain nuts, berries and the skins of red grapes. Several studies ...