Eggs
Eggs are a great source of vitamin D. We all know that this nutrient is essential for bones, but it is also important for your white blood count and immune system. In fact, a deficiency of vitamin D would increase the risks of diabetes, Crohn’s disease, multiple sclerosis, and respiratory infections. Immune cells actually contain many vitamin D receptors, which are responsible for regulating defense mechanisms in the body. One egg has approximately 40 international units of vitamin D. Typical adults are recommended to take in at least 600 IUs on a daily basis. Keep in mind that egg yolks are rich in selenium and zinc, which can be a boost for your immune system. [14]
