USDA. ARS. Food Surveys Research Group.
Vitamin A and E values for 4,311 foods. This database was developed for use with NHANES 1999-2000.
USDA. ARS. Food Surveys Research Group.
Vitamin A and E values for 4,311 foods. This database was developed for use with NHANES 1999-2000.
DHHS. NIH. Office of Dietary Supplements.
OSU. LPI. Micronutrient Information Center.
OSU. LPI. Micronutrient Information Center.
DHHS. NIH. National Library of Medicine.
Read about the function, sources, and intake recommendations for Vitamin A.
World Health Organization.
Provides vitamin A deficiency data by country based on xerophthalmia and/or serum or plasma retinol concentration.