8 Key Minerals Essential for Boosting Immunity

#4. SELENIUM

ROLE

Selenium works alongside other antioxidants, such as vitamin E and is essential for normal function of the immune system and thyroid gland. It is thought to help protect against cancer, enhance male fertility, and regulate asthma,

SOURCES

Brazil nuts, liver, shellfish, caviar, fish (especially canned tuna), mushrooms, garlic, egg yolk, sesame and sunflower seeds, wheat germ, and wheat, oat, and rice bran.