Steer Clear of the Flu With These 6 Immunity-Boosting Foods

Fermented foods have been in the news for all their probiotic properties — and their interesting taste! Naturopath practitioner Dr. Holly Lucille also suggests taking a high-quality probiotic supplement since "89 percent of our immune system" is driven by having good microflora in your gut that help battle viruses. For vegetarians or vegans who want the "good" bacteria in probiotics, sauerkraut is one of your best nondairy options.