[Reference values of vitamin A for the Venezuelan population].
Vitamin A deficiency is one of the most prevalent nutritional deficiencies worldwide, mainly affecting children and women. The cause of vitamin A deficiency is insufficient intake, especially in presence of infection and the consequences of the deficiency are xerophthalmia, night blindness, anemia, increased susceptibility to infections and the still controversial increase in infant mortality. National evidence at this point is insufficient to establish the recommendation, and as in the 2000 review of the Venezuelan RDAs, the actual recommendations are based on the reported for the United States population. The Recommended Dietary Allowances (RDA) for Venezuela are 400-500 RE/day for infants, 300-400 RE/day for children 600 RE/day for adolescents, 900 RE/day for men and 700 RE/day for women, increasing to 750 RE/day for pregnancy and to 1200-1300 RE/day during lactation, depending on the age. The estimated average requirement (EAR) is between 210 and 275 RE/day for children, 445 RE/day for male adolescents, 420 RE/day for female adolescents, 630 RE/day for men and 485 RE/day for women, increasing to 530-550 and 885-900 RE/ day during pregnancy and lactation, respectively. The tolerable upper intake levels (UL) for vitamin A are 600 RE/day for children, 1700 a 2800 RE/day for adolescents and 3000 RE/day for adults, males and females.
Instituto Venezolano de Investigaciones Científicas, Centro de Medicina Experimental, Laboratorio de Fisiopatología, Caracas, Venezuela.
María Nieves
MN
García-Casal
D000293:Adolescent; D000328:Adult; D000367:Age Factors; D001835:Body Weight; D002648:Child; D002675:Child, Preschool; D002149:Energy Intake; D005260:Female; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D008297:Male; D008875:Middle Aged; D011247:Pregnancy; D064167:Recommended Dietary Allowances; D012016:Reference Values; D012737:Sex Factors; D014687:Venezuela; D014801:Vitamin A / Q000008:administration & dosage*; D014815:Vitamins / Q000008:administration & dosage*; D055815:Young Adult
D014815:Vitamins; D014801:Vitamin A