Walk into any grocery store and it's easy to see how readily Americans buy into the idea of superfoods.
Boxes tout the antioxidants added to their contents. Drink bottles promise boosts in immunity. Cereals offer an assurance of lower cholesterol.
It's seductive to think that food has been engineered into a medicine, and that sitting down to a yummy meal is the answer to being healthy for a long long time.
But what's the science behind these claims?
NBC Chicago went to an area lab that specializes in examining how food affects human health, for better or for worse, to find out what you really get when you plunk down those extra dollars for those superfoods.