Prevalence and factors associated with food insecurity in quilombola families from Alagoas, Brazil / Prevalência e fatores associados à Insegurança Alimentar em famílias das comunidades quilombolas de Alagoas, Brasil

ABSTRACT Objective This study aimed identify the prevalence and factors associated with food insecurity in families from the remaining quilombola communities in Alagoas, Brazil. Methods This is a cross-sectional study involving families residing in a random sample of 34 out of the 68 quilombola communities in Alagoas. The dependent variable was food insecurity, defined by the Brazilian Food Insecurity Scale, and its association (prevalence ratio - PR and 95% CI) with the independent variables (socioeconomic, demographic, and environmental) was assessed through multivariable analysis (Poisson regression with robust variance adjustment). Results A total of 2,485 families were evaluated, of which 67.6% were experiencing food insecurity (32.9% mild, 20.1% moderate, and 14.6% severe). Variables associated with moderate + severe forms were: improper waste disposal other than public collection; households with ≤4 rooms; using inadequate water for consumption; households with >4 residents; with residents <18 years old; low educational level of the head of the family (≤8 years); belonging to the lower economic class (D-E); and being a beneficiary of the Bolsa Família Program. Conclusion Food insecurity affects more than two-thirds of quilombola families in Alagoas, constituting an expressive public health problem. In its more severe forms (moderate+severe), it is associated with worse environmental, socioeconomic, and demographic conditions.

RESUMO Objetivo Identificar a prevalência e os fatores associados à insegurança alimentar em famílias das comunidades remanescentes de quilombos de Alagoas, Brasil. Métodos Trata-se de um estudo transversal, envolvendo as famílias residentes em amostra aleatória de 34 dentre as 68 comunidades quilombolas alagoanos. A variável dependente foi a insegurança alimentar, definida pela Escala Brasileira de Insegurança Alimentar, e sua associação (razão de prevalência e intervalo de confiança 95%) com as variáveis independentes (socioeconômicas, demográficas e ambientais) foi verificada por análise multivariável, (regressão de Poisson com ajuste robusto da variância). Resultados Foram avaliadas 2.485 famílias, das quais 67,6% estavam em insegurança alimentar (32,9% leve, 20,1% moderada e 14,6% grave). As variáveis associadas às formas moderada e grave foram: destinação do lixo diferente de coleta pública; domicílios com ≤4 cômodos; utilização de água inadequada para consumo; domicílios com >4 moradores; com moradores <18 anos; baixa escolaridade do chefe da família (≤8 anos); pertencer à classe econômica inferior (D-E) e; ser usuário do Programa Bolsa Família. Conclusão A insegurança alimentar atinge mais de dois terços das famílias quilombolas alagoanas, configurando-se num importante problema de saúde pública. Em suas formas mais intensas (moderada e grave), associa-se a piores condições ambientais, socioeconômicas e demográficas.

Prevalence of IGFBP3, NOS3 and TCF7L2 polymorphisms and their association with hypertension: a population-based study with Brazilian women of African descent.

OBJECTIVE: African ancestry seems to be a risk factor for hypertension; however, few genetic studies have addressed this issue. This study aimed to investigate the prevalence of polymorphisms NOS3; rs1799983, IGFBP3; rs11977526 and TCF7L2; rs7903146 in Brazilian women of African descent and their association with hypertension. RESULTS: The prevalences of the less frequent genotypes were 26.5% TT genotype of NOS3; rs1799983, 16.7% AA genotype of IGFBP3; rs11977526, and 18.3% TT genotype of TCF7L2; rs7903146. For these conditions, the prevalence of hypertension and PR (adjusted) relatively to the ancestral genotype were, respectively: 52.0% vs 24.5% (PR = 1.54; p < 0.001), 62.0% vs 24.1% (PR = 1.59; p < 0.001), and 38.9% vs 27.9% (PR = 0.86; p = 0.166). Associations with hypertension were statistically significant, except for the TCF7L2; rs7903146 polymorphism, after adjusted analysis. Brazilian Afro-descendant women with the TT genotype for the NOS3 gene and the AA genotype for the IGFBP3 gene are more susceptible to hypertension. The understanding of underlying mechanisms involving the pathogenesis of hypertension can motivate research for the development of new therapeutic targets related to nitric oxide metabolism and the management of oxidative stress.

Stunting and overweight among children in Northeast Brazil: prevalence, trends (1992-2005-2015) and associated risk factors from repeated cross-sectional surveys.

BACKGROUND: A study involving children from Alagoas (Northeast Brazil) revealed that, as a consequence of a drastic reduction in the prevalence of stunting between 1992 to 2005, (22.5 to 11.4%) combined with an increase in overweight prevalence (6.7 to 9.3%), the prevalence of these two conditions in 2005 was very close. If these trends were maintained, it is very likely that, at this time, the childhood overweight prevalence has already exceeded that of the stunting. However, no study is available to confirm this hypothesis. The identification of these changes is relevant to the planning and evaluation of public policies. This study aimed to investigate the prevalence, time trends and associated factors with stunting and overweight in children from Alagoas. METHODS: Independent cross-sectional household surveys were conducted in 1992 (n = 1231), 2005 (n = 1381) and 2015 (n = 988). Data were collected from probabilistic samples of children aged 0-60 months. Stunting was defined by stature-for-age < - 2 sd and overweight by weight-for-stature > 2 sd. RESULTS: Between 1992, 2005 and 2015, the stunting prevalence was 22.6, 11.2 and 3.2% (reduction of 85.8%), while the overweight prevalence was 6.9, 7.5 and 14.9% (increase of 115.9%), respectively. After multivariate analysis, the following positive associations with stunting were observed in 1992: age group > 24 months (28.3% vs 14.5%), mother with ≥2 children (28.8% vs 12.8%), low birth weight (28.3% vs 15.7%) and mother with low schooling (29.3% vs 7.2%). In 2015 there was a higher prevalence of stunting in males (4.2% vs 2.2%), in children < 24 months (4.6% vs 2.2%), with low birth weight (8.6% vs 3.0%) and in those who had mothers with low schooling (7.0% vs 2.6%). Regarding overweight, in 1992 there was higher prevalence for male (9.1% vs 4.7%) and in children whose mothers had ≤2 children (8.9% vs 5.8%), while in 2015 only birth weight >  4 kg was associated to overweight (27.3% vs 14.2%). CONCLUSIONS: During the analyzed period, there was a significant decrease in stunting prevalence. At the same time, a substantial increase was observed in the overweight prevalence. Currently, stunting is a problem of low magnitude, while overweight has become a worrying public health problem.