Superfoods don't just come from your supermarket's produce aisle. In fact those chocolate candy bars next to the gummy bears now qualify. Study after study proves that dark chocolate—sweet, rich, and delicious—is good for more than curing a broken heart.
The secret behind its powerful punch is cacao, also the source of the sweet's distinct taste. Packed with healthy chemicals like flavonoids and theobromine, this little bean is a disease-killing bullet. The only problem? Cacao on its own is bitter, chalky, nasty stuff.
Enter milk, sugar, and butter—good for your taste buds, not always good for your health. Besides adding calories, these can dilute the benefits of cacao. So snack smart: Stick to healthy chocolate with at least 70 percent cacao (or cocoa, which is cacao in its roasted, ground form). As long as the content is that high, says Mary Engler, Ph.D., a professor of physiological nursing at the University of California at San Francisco, you can reap the benefits from eating only small amounts. Because of its high fat and sugar content, limit yourself to 7 ounces, or about four dark chocolate bars, a week.
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