10 Winter Foods You Should Eat to Prevent Colds and Flu

Root vegetables

As an all-star warrior that shortens the duration of colds and improves symptoms, vitamin C is an essential nutrient for cold-weather months, explains registered dietitian Michele Gilson of Kaiser Permanente. Yes, oranges are a good source, says Gilson, but so are root vegetables, which makes them a smart addition to soups and stews. Focus on beets, turnips, parsnips, and carrots, among many others.

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