Not only does your body use selenium to aid thyroid function and keep your immune system strong, it can also help your flu shot be more effective
Zinc
Zinc, a nutrient that helps bolster the immune-boosting powers of vitamin C, makes the cut you don't even need mega-amounts to enjoy the immune-boosting benefits.
Copper
While the idea of eating a metal may sound a bit weird, copper is actually an essential trace element that's vital to a healthy immune system.
Vitamin B6
Without vitamin B6, your body can't produce a number of its key immune fighters, including lymphocytes, a type of white blood cell.
Vitamin A
These red blood cells are special because that have the power to not only hunt down cells that are infected with germs but destroy them, too.
Folate
Not only has folate deficiency been shown to negatively affect immunity in animals, it's associated with an increased susceptibility
Iron
Iron helps transport oxygen throughout the body, making it vital for proper immune function. Without the nutrient, your body can't get enough oxygen
Vitamin D
Vitamin D boosts the absorption of calcium and helps regulate hunger, but did you know that people with low levels of the nutrient catch
Magnesium
Magnesium is another one of Harvard University's recommended immune-boosting micronutrients—and for good reason.
Vitamin E
Vitamin E plays an important role in keeping you germ-free, too. The fat-soluble antioxidant roams the body and fights off free radicals
Vitamin C
Vitamin C is found abundantly in a number of healthy foods. For this reason, most doctors say that taking a supplement, like Emergen-C
Prebiotics
Recause without prebiotics, these healthy bugs can't stay alive long enough to do their job. Instead of popping a pill to get your fill