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10 flu-fighting foods

By: Julie Knapp on Jan. 10, 2011, 7:11 a.m.
A pile of white mushrooms

Photo: Mike Licht/flickr

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Mushrooms

Mushrooms used to get overlooked as a health food, but they possess two big weapons you need this flu season: selenium, which helps white blood cells produce cytokines that clear sickness, and beta glucan, an antimicrobial type of fiber, which helps activate "superhero" cells that find and destroy infections.