Selenium is a great mineral to boost the immune system. A deficiency of selenium has been shown to increase the risk of various type of cancers such as breast cancer, prostate cancer and colon cancer. This mineral also improves the defense mechanism of the immune system and helps to keep disease-causing pathogens away.
Magnesium is a vital mineral that helps in proper functioning of the immune system. Having a deficiency of magnesium in the body leads to disabled immune function that can cause chronic inflammation, risk of cancer, multiple sclerosis, diabetes and other ill conditions.