Vegetables That Boost Your Immune System
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Onions are rich in quercetin, a powerful antioxidant that may reduce the risk of cancer.
Like garlic, onions also contain the amazing compound allicin. Red and purple onions contain anthocyanins, the same antioxidants that make berries so robust in healing powers. In addition to being extraordinary at preventing and healing cancer, the quercetin contained in onion makes them a safe therapy for allergies; it also helps prevent heart disease and reduce high blood pressure.