Hipovitaminose A em crianças de áreas rurais do semi-árido baiano Vitamin A deficiency in children of rural zones, Northeast region of Brazil

Abstract

Objetivou-se avaliar a distribuição e a magnitude da deficiência de vitamina A e o consumo dietético de 161 crianças de 6 a 72 meses de idade, de áreas rurais do Município de Cansanção-Bahia, Brasil. Os níveis de retinol sérico foram medidos pelo método espectrofotométrico (Bessey-Lowry modificado por Araújo e Flores, 1978). A média do retinol sérico distribuiuse homogeneamente entre as diferentes faixas etárias. Níveis inadequados de retinol sérico (deficiente The distribution and magnitude of vitamin A deficiency and dietary consumption of 161 children at 6 to 72 months of age in rural zones in Cansanção-Bahia-Brazil were evaluated. The serum retinol levels were measured by the spectrophotometric method (Bassey-Lowry modified by Araújo and Flores). The serum retinol average was found to be distributed homogeneously throughout the different age groups. Inadequate serum retinol levels (<20,0 µg/dl) were detected in 44.7% of the children, which characterized the deficiency as constituting a public health problem. The serum retinol levels showed no statistically significant association as between the sex and age of the children; however the chilfren of less than 24 months showed a higher prevalence of inadequate serum retinol levels. The main available source of vitamin A for these children was represented by carotenoids, especially beta-carotene. Foods regarded as being rich in vitamin A were consumed by all age groups. The greatest diversification of consumption of foordstuffs with moderate and low vitamin A content was observed in the group of children of from 24 to 72 months of age, through this was no guarantee of adequate serum retinol levels in this group however.

Keywords

• Deficiência de Vitamina A
• Inquéritos sobre dieta
• População rural
• Vitamin A deficiency
• Diet survays
• Rural population