Sweet potato is high in vitamin C, but it’s the vitamin A that grabs our attention as an immunity-boosting food. “Vitamin A is really important for the mucus membranes that line our nose and throat,” says McDaniel, “and that is really your body’s first line of defense.” McDaniel stresses, though, that you need a well-rounded diet for a fully functioning immune system. That includes protein. “Make sure that you get a little protein with every meal to assist your body in making antibodies.”
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