Vitamin A--functions, dietary requirements and safety in humans.

  title={Vitamin A--functions, dietary requirements and safety in humans.},
  author={Holger Gerster},
  journal={International journal for vitamin and nutrition research. Internationale Zeitschrift fur Vitamin- und Ernahrungsforschung. Journal international de vitaminologie et de nutrition},
  volume={67 2},
  • Holger Gerster
  • Published 1997 in
    International journal for vitamin and nutrition…
In recent years, new physiological functions of vitamin A have been identified in addition to its role in vision, namely its role in immune defence reducing morbidity of measles, of respiratory and possibly HIV infections, in gene regulation, in cell differentiation and morphogenesis. With the discovery of nuclear receptors for retinoic acid additional functions are likely to be found. The recommended dietary allowances (RDA) for vitamin A, including provitamin A carotenoids, vary greatly… CONTINUE READING


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