The vitamin A is essential to the preservation and the normal functioning of tissues, as well as, to the growth and development. In the human being it has indirect evidence that the vitamin A in excess, during the first weeks of gestation is teratogenic. Of the opposite, it does not have doubts on the deleterious effect, of a devoid feeding in this micronutrient and on the availability of the knowledge technician to prevent them. The concern with the fact of that the vitamin A would lead it the teratogenicity in human beings, has delayed the implementation of combat programs the vitamin A lack, mainly reaching the programs of food enrichment. Literature is controverted and makes use of few information on the doses for supplementation of pregnant. As retinol circulating maternal is controlled homeostatic after the food consumption vitamin source, it expects after same metabolic reply the strengthened food consumption, indicating that it does not have teratogenicity risk. Consequently, highly seems improbable that the consumption of enriched foods or vitamin supplements the daily pay-formed one, in habitual the single doses, has teratogenic effect in the man.
Vitamin A; Teratogens; Vitamin A deficiency