Dietary Supplement Fact Sheet: Vitamin A and Carotenoids
Office of Dietary Supplements • NIH Clinical Center • National Institutes of Health
Vitamin A is a family of fat-soluble compounds that play an important role in vision, bone growth, reproduction, cell division, and cell differentiation (in which a cell becomes part of the brain, muscle, lungs, etc.) [1-5]. Vitamin A helps regulate the immune system, which helps prevent or fight off infections by making white blood cells that destroy harmful bacteria and viruses [1,6-10]. Vitamin A also may help lymphocytes, a type of white blood cell, fight infections more effectively.
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