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Health.com: Foods That Make You Feel Better

Survive Cold Season: Tuna, Halibut, Turkey

Don't subsist only on salads during the winter months. Getting an insufficient amount of selenium can mean that you're missing out on a key player in immune function. Selenium helps build up white blood cells—particularly those responsible for killing bacteria and viruses, even the flu. Animal studies have shown that selenium deficiency not only leads to more severe flu symptoms but also enables mild flu viruses to mutate into more virulent strains. Just one serving of halibut or sardines gives you more than 60 percent of your RDA and provides you with mood-boosting omega-3 fatty acids.

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The opinions expressed are solely those of the author and do not necessarily reflect the views of Comcast.

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