Navegando por Palavras-chave "vitamin A deficiency"

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    Deficiência de vitamina A em pré-escolares da cidade do Recife, Nordeste do Brasil
    (Archivos Latinoamericanos Nutricion, 2010-03-01) Azevedo, Maria Magdala Sales de; Cabral, Poliana Coelho; Diniz, Alcides da Silva; Fisberg, Mauro [UNIFESP]; Fisberg, Regina Mara [UNIFESP]; Arruda, Ilma Kruze Grande de; Universidade Federal de Pernambuco (UFPE); Universidade Federal de São Paulo (UNIFESP); Universidade de São Paulo (USP)
    Vitamin A deficiency in preschool children of Recife, Northeast of Brazil. The purpose of the study was to evaluate the extent of vitamin A deficiency (VAD) among preschool children in the city of Recife, Northeast Brazil. The sample comprised 344 children of both sexes, 24 to 60 months old, in 18 public day care centres in the city of Recife, in 2007. The nutritional status of vitamin A was assessed by biochemical (serum retinol) and dietetic (vitamin A rich-food consumption) indicators and the pondo-stature status through anthropometric indicators weight-for-age, height-for-age and weight-for-height. The prevalence of hyporetinolemia (<0.70 mu mol / L) was 7.7% (IC95% 4.88 - 11.81), which characterizes the VAD as a light-type public health problem, according to World Health Organization criteria. On the other hand, 29.6% (IC95% 24.22 - 35.63) of children had acceptable or marginal levels (0.70 to 1.04 mu mol/L) of retinol. Regarding the vitamin A rich-food intake, values below the EAR (Estimated Average Requirement) - 210 mu g/day for children of 1 to 3 years old and 275 mu g/day for children of 4 to 8 years old - were 8.1% and 21.3% respectively. The prevalence of anthropometrical deficits (<-2 scores -Z) in preschool children were 2.5% for the indicator weight-for-age, 8.6% for height-for-age and 1.5% for weight-for-height. The research findings point out to the importance of institutionalization for the appropriate nutritional status of children and maintenance of adequate reserves of vitamin A. However, more studies are needed focusing on non-institutionalized preschool, or children living outside the privileged environment of public day care centres.
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    Prevalence and determinants of vitamin A deficiency among Brazilian children under 2 years of age from the 2006 National Demographic Health Survey
    (Int Nutrition Foundation, 2014-12-01) Konstantyner, Tulio [UNIFESP]; Warkentin, Sarah [UNIFESP]; Taddei, Jose Augusto de Aguiar Carrazedo [UNIFESP]; Universidade Federal de São Paulo (UNIFESP); Univ Santo Amaro
    Background. Vitamin A deficiency is prevalent among infants, primarily in undeveloped communities, compromising immune system competence and raising morbidity and mortality rates. Understanding the risk factors associated with vitamin A deficiency is essential to create informed health policies.Objective. To identify and quantify risk factors for vitamin A deficiency in a probabilistic sample of children under 2 years of age participating in a national survey in Brazil and to provide a comprehensive risk factor model to inform health strategies and policies.Methods. We analyzed data from a cross-sectional study of 1,436 children from the 2006 Brazilian National Survey on Demography and the Health of Women and Children. Vitamin A deficiency was defined as retinol levels below 0.70 mu g/dL.Results. The prevalence of vitamin A deficiency was estimated at 16.1% (95% CI, 12.7 to 20.2). The Poisson regression model identified three risk factors for vitamin A deficiency: urban residence (prevalence ratio [PR]=1.47, p=.023), no consumption of animal meat within the past week (PR=1.41, p=.031), and a mother older than 25 years (PR=1.31, p=.048).Conclusions. Strategies to control infant vitamin A deficiency should include health promotion and nutrition education for families from all socioeconomic levels. Improvements in lifestyle quality, based on adequate food consumption by all infants, must be achieved by communities, especially in urban areas and for older mothers.