Taking zinc supplements by mouth is unlikely to improve immune function in people who are not at risk for zinc deficiency. (webmd.com)
Beta - carotene has been found to reduce cell damage caused by free radicals, and improves immune function by enhancing cell mediated immune responses. (superchargedfood.com)
She has learned that nutrition is a key piece of the puzzle, as it lays the foundation for improved immune function. (westonaprice.org)