Vitamin A plays a role in your
- Bone growth
- Cell functions
- Immune system
Vitamin A is an antioxidant. It can come from plant or animal sources. Plant sources include colorful fruits and vegetables. Animal sources include liver and whole milk. Vitamin A is also added to foods like cereals.
Vegetarians, young children, and alcoholics may need extra Vitamin A. You might also need more if you have certain conditions, such as liver diseases, cystic fibrosis, and Crohn's disease. Check with your health care provider to see if you need to take vitamin A supplements.
NIH: National Institutes of Health Office of Dietary Supplements
- Facts about Vitamin A (University of Florida, Institute of Food and Agricultural Sciences) - PDF
- Vitamin A (Harvard School of Public Health)
- Vitamin A (National Institutes of Health, Office of Dietary Supplements) Available in Spanish
- Vitamin A and Bone Health (National Institute of Arthritis and Musculoskeletal and Skin Diseases)
- Vitamin A Test (American Association for Clinical Chemistry)
- Vitamin A, Retinoids, and Provitamin A Carotenoids (American Cancer Society)
- ClinicalTrials.gov: Vitamin A (National Institutes of Health)
Journal ArticlesReferences and abstracts from MEDLINE/PubMed (National Library of Medicine)
- Find a Registered Dietitian Nutritionist (Academy of Nutrition and Dietetics)