Add Yahoo as a preferred source to see more of our stories on Google. Have you ever wondered what makes a "superfood" super? Or what top superfoods like red wine, green tea, kale, and blueberries all ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through the links below." Between all the vitamins and supplements out there, it’s hard to keep up. Besides a multivitamin (and ...