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Turkey

Why it's super: A 4-ounce portion of turkey breast meat contains almost 50% of your daily selenium, a trace mineral that plays essential roles in immune function and antioxidant defense. Despite the claim that turkey meat causes drowsiness during the holidays, it actually contains high amounts of niacin and vitamin B6, which are important for efficient energy production and blood-sugar regulation.

How to enjoy it: If you roast a whole bird, make sure to remove any skin, which is full of saturated fat; try substituting ground all-white-meat turkey breast for ground beef in your favorite hamburger recipe.

Next: Walnuts