The Claim: Dark chocolate is a prime source of antioxidants.
The Bottom Line: Chocolate, extracted from cacao beans, gets its health benefits from a type of antioxidant known as flavanols, which are also found in grapes, apples, and strawberries. Of the various types of chocolate, dark chocolate is richest in flavanols, while milk chocolate has much less (along with more sugar). White chocolate -- a mix of cacao fat, sugar, and flavorings -- has no flavanols. Stick with 70 percent or higher cocao bars, or try unsweetened cocoa powder (it you can tolerate the bitter taste), or a dietary supplement with concentrated flavanols.