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Ask the Expert: What Can I Eat to Ward Off Colds and Flu?

People ages 21 to 41 who ate 5 to 10 grams of whole, dried shiitake mushrooms every day for four weeks experienced increased activity in their germ and disease-fighting cells.

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What can I eat to ward off colds and flu?

Shiitake mushrooms

People ages 21 to 41 who ate 5 to 10 grams of whole, dried shiitake mushrooms every day for four weeks experienced increased activity in their germ- and disease-fighting T cells (white blood cells), according to a recent study published in the Journal of the American College of Nutrition.

See also Q+A: What Should I Do to Stay Healthy Throughout Cold and Flu Season?