Vitamin C, found in oranges, lemons, grapefruits, and tangerines, boosts the immune system.

Antioxidants and vitamin C in blueberries, strawberries, raspberries, and blackberries boost immunity.

Yogurt and other fermented foods include probiotics, which boost gut health and immunity.

Spinach, kale, and broccoli include antioxidants, vitamins A, C, and K, which boost immunity.

Almonds, sunflower seeds, and walnuts include immune-boosting vitamin E and healthful lipids.

Turmeric contains curcumin, an antioxidant and anti-inflammatory that may boost the immune system.

Ginger has anti-inflammatory and antioxidant effects that may boost immunity.

Green tea contains antioxidants including flavonoids that may boost immunity.

Zinc and other immune-boosting minerals are found in chicken, turkey, salmon, lentils, and beans.