Wildmeat consumption and child health in Amazonia.

Consuming wildmeat may protect against iron-deficiency anemia, a serious public health problem globally. Contributing to debates on the linkages between wildmeat and the health of forest-proximate people, we investigate whether wildmeat consumption is associated with hemoglobin concentration in rural and urban children (< 5 years old) in central Brazilian Amazonia. Because dietary practices mediate the potential nutritional benefits of wildmeat, we also examined whether its introduction into children's diets is influenced by rural/urban location or household socio-economic characteristics. Sampling 610 children, we found that wildmeat consumption is associated with higher hemoglobin concentration among the rural children most vulnerable to poverty, but not in the least vulnerable rural, or urban children. Rural caregivers share wildmeat with children earlier-in-life than urban caregivers, potentially because of cultural differences, lower access to domesticated meat, and higher wildmeat consumption by rural households (four times the urban average). If wildmeat becomes unavailable through stricter regulations or over-harvesting, we predict a ~ 10% increased prevalence of anemia among extremely poor rural children. This modest protective effect indicates that ensuring wildmeat access is, alone, insufficient to control anemia. Sustainable wildlife management could enhance the nutritional benefits of wildlife for vulnerable Amazonians, but reducing multidimensional poverty and improving access to quality healthcare are paramount.

Human Mercury Exposure in Yanomami Indigenous Villages from the Brazilian Amazon.

In the Brazilian Amazon, where the majority of Yanomami villages are settled, mercury (Hg) exposure due to artisanal small-scale gold mining (ASGM) has been reported since the 1980s. This study assessed mercury exposure in the Yanomami reserve and whether the level of contamination was related to the ASGM geographical location. It was conducted using a cross-sectional study of 19 villages. Direct interviews were performed and hair samples were used as a bioindicator of Hg exposure. The Prevalence-Ratio (PR) was estimated as an indicator of association between ASGM geographical locations and human exposure to mercury. Mercury levels (239 hair samples) ranged between 0.4 and 22.1 µg·g-1 and presented substantial differences amongst the villages. In the Waikas-Aracaça region, where current ASGM was reported, we observed the highest Hg concentrations (median = 15.5 µg·g-1). Almost all participants presented with hair-Hg levels >6 µg·g-1 (prevalence = 92.3%). In the Paapiu region, we observed the lowest concentrations (median = 3.2 µg·g-1; prevalence = 6.7%). Our findings showed that the Waikas Ye'kuana and Waikas Aracaca villages presented with 4.4 (PR = 4.4; Confidence Interval (CI) 95% = 2.2⁻9.0) and 14.0 (PR = 14.0; CI 95% = 7.9⁻24.9) times higher prevalence of hair-Hg concentration, respectively, compared with Paapiu. Considering seasonal variation of Hg-exposure, the lowest concentrations were observed during the wet season (June⁻September) and the highest in the dry season (December⁻April). Our study suggests that there is an association between mercury exposure and ASGM geographical locations.

Prevalência e fatores associados à anemia em mulheres indígenas Suruí com idade entre 15 e 49 anos, Amazônia, Brasil / Prevalence of and factors associated with anemia in indigenous Surui women aged between 15 and 49 years in the Brazilian Amazon

OBJETIVOS: investigar a prevalência e os fatores associados à ocorrência de anemia em mulheres indígenas Suruí com idade entre 15 e 49 anos. MÉTODOS: estudo transversal realizado a partir de levantamento censitário em 2005 na terra indígena Sete de Setembro, localizada em Rondônia, Brasil. A dosagem de hemoglobina (Hb) foi realizada pelo aparelho β-hemoglobinômetro portátil. Pontos de corte de anemia: Hb <12,0 g/dL nas não gestantes; Hb <11,0 g/dL nas gestantes. Dados demográficos e de status socioeconômico (SSE) foram obtidos por meio da aplicação de questionário padronizado. A primeira etapa da análise estatística incluiu os testes: qui-quadrado; qui-quadrado de tendência linear; t de Student; linearidade e análise de variância. Na segunda etapa, o modelo logístico final foi ajustado. RESULTADOS: a prevalência global de anemia nas não gestantes foi de 67,3 por cento e nas gestantes de 81,8 por cento. A análise multivariada demonstrou que as mulheres com um ou dois filhos anêmicos com idade entre 6 e 35 meses tiveram três vezes mais chances de serem anêmicas; mulheres do estrato SSE baixo apresentaram 3,5 vezes mais chance de serem anêmicas. A chance de uma mulher Suruí do SSE baixo ter anemia aumentou em 26 por cento em relação às do estrato SSE alto. CONCLUSÕES: a anemia é um grave problema de saúde nas mulheres Suruí e é influenciada por características familiares/domiciliares, incluindo descendentes com anemia e condições socioeconômicas. Argumenta-se que medidas de tratamento e prevenção voltadas ao controle da anemia nos Suruí devem considerar tais fatores.

OBJECTIVES: to investigate the prevalence of and factors associated with the occurrence of anemia in indigenous Surui women aged between 15 and 49 years. METHODS: a cross-sectional study was carried out based on the 2005 census of Sete de Setembro indigenous territory in the Brazilian State of Rondônia. Hemoglobin measurement (Hb) was carried out using a portable β-hemoglobinometer. The cut-off points for anemia were Hb <12.0 g/dL in non-pregnant women and Hb <11.0 g/dL in pregnant women. Demographic and socio-economic data were gathered using a standardized questionnaire. The first stage of statistical analysis included the: chi-square; the chi-square linear tendency test; Student's t; a test for linearity and analysis of variance. In the second stage, the final logistic model was adjusted. RESULTS: the overall prevalence of anemia in non-pregnant women was 67.3 percent and, in pregnant women, 81.8 percent. Multivariate analysis showed that women with one or two anemic children aged between 6 and 35 months were three times more likely to be anemic; women from the lowest socio-economic stratum were 3.5 times more likely to be anemic. The likelihood of a Surui woman of low socio-economic status being anemic was 26 percent higher than that of one from the highest socio-economic stratum. CONCLUSIONS: anemia is a serious health problem among Surui women and is influenced by household factors, such as having children with anemia and socio-economic circumstances. It is suggested that measures to treat and prevent anemia among the Surui take these factors into account.

Anthropometric evaluation of indigenous Brazilian children under 60 months of age using NCHS/1977 and WHO/2005 growth curves / Avaliação antropométrica de crianças indígenas menores de 60 meses, a partir do uso comparativo das curvas de crescimento NCHS/1977 e OMS/2005

OBJETIVOS: Descrever e analisar comparativamente os dados antropométricos de crianças indígenas Suruí, Xavánte e Wari' menores de 60 meses, a partir dos conjuntos de curvas de crescimento NCHS/1977 e WHO/2005. MÉTODOS: A antropometria seguiu técnica padronizada e os dados foram convertidos em escores z utilizando-se os programas Epi-Info (Versão 3.4) e WHO-Anthro (Versão Beta). Os índices estatura/idade (E/I), peso/idade (P/I) e peso/estatura (P/E) foram os descritores do estado nutricional em todas as crianças menores que 60 meses e também o índice de massa corporal (IMC) nas de 24-59 meses. RESULTADOS: As prevalências de E/I < -2 escores z foram: crianças Suruí, 31,4 (NCHS/1977) e 38,6% (WHO/2005); Xavánte, 30,9 e 42,3%; Wari', 61,7 e 68,3%. As prevalências de P/I < -2 escores z foram: crianças Suruí, 12,4 (NCHS/1977) e 8,5% (WHO/2005); Xavánte, 16,5 e 11,6%; Wari', 51,7 e 45,0%. As prevalências de P/E < -2 escores z para as crianças Suruí foram nulas (NCHS/1977 e WHO/2005); para as Xavánte, 1,7 e 3,3%; e para as Wari', 1,7% e nula. As prevalências de P/E > 2 escores z para as crianças Suruí foram 3,9 (NCHS/1977) e 3,9% (WHO/2005); Xavánte, nula e 0,8%; Wari', nulas para ambas as curvas. Nas crianças Suruí de 24 a 59 meses o percentual com escore z > 2 para o IMC foi de 5,4% (WHO/2005); Xavánte, 9,5%; Wari', 0%. CONCLUSÕES: Há diferenças importantes nos resultados da avaliação nutricional, a depender do conjunto de curvas utilizadas, ainda que o emprego de ambas revele elevadas prevalências de desnutrição. Sugere-se que, inclusive para fins de comparabilidade, estudos com populações indígenas apresentem seus resultados utilizando os dois conjuntos de curvas de crescimento.

OBJECTIVES: To perform a comparative analysis of anthropometric data from Suruí, Xavánte and Wari' indigenous children under 60 months of age using the NCHS/1977 and the WHO/2005 growth curves. METHODS: Anthropometric measurements followed standard procedures and the data obtained were converted into z scores using the Epi-Info (Version 3.4) and WHO-Anthro (Version Beta) softwares. The indices height/age (H/A), weight/age (W/A) and weight/height (W/H) were descriptors of nutritional status for all children under 60 months of age, as well as the body mass index (BMI) for children 24-59 months old. RESULTS: The frequencies of Suruí children < -2 z scores for H/A were 31.4 (NCHS/1977) and 38.6% (WHO/2005); Xavánte 30.9 and 42.3%; Wari' 61.7 and 68.3%. The frequencies of Suruí children < -2 z scores for W/A were 12.4 (NCHS/1977) and 8.5% (WHO/2005); Xavánte 16.5 and 11.6%; Wari' 51.7 and 45.0%. None of the Suruí children were < -2 z scores for W/H (NCHS/1977 and WHO/2005); the frequencies of Xavánte children were 1.7 and 3.3% and Wari' 1.7 and 0.0%. The frequencies of Suruí children > 2 z scores for W/H were 3.9 (NCHS/1977) and 3.9% (WHO/2005); Xavánte 0.0 and 0.8%; Wari' 0.0 and 0.0%. The frequency of Suruí children aged 24-59 months > 2 z scores for BMI was 5.4% (WHO/2005); Xavánte 9.5%; and Wari' 0.0%. CONCLUSIONS: Our findings revealed important differences in the results from nutritional assessment, according to the set of growth curves used; however, the use of both growth curves revealed a high prevalence of malnutrition. Therefore, future studies with indigenous populations should present their results using two sets of growth curves to allow consistent comparison.

Anthropometric evaluation of indigenous Brazilian children under 60 months of age using NCHS/1977 and WHO/2005 growth curves.

OBJECTIVES: To perform a comparative analysis of anthropometric data from Suruí, Xavánte and Wari' indigenous children under 60 months of age using the NCHS/1977 and the WHO/2005 growth curves. METHODS: Anthropometric measurements followed standard procedures and the data obtained were converted into z scores using the Epi-Info (Version 3.4) and WHO-Anthro (Version Beta) softwares. The indices height/age (H/A), weight/age (W/A) and weight/height (W/H) were descriptors of nutritional status for all children under 60 months of age, as well as the body mass index (BMI) for children 24-59 months old. RESULTS: The frequencies of Suruí children < -2 z scores for H/A were 31.4 (NCHS/1977) and 38.6% (WHO/2005); Xavánte 30.9 and 42.3%; Wari' 61.7 and 68.3%. The frequencies of Suruí children < -2 z scores for W/A were 12.4 (NCHS/1977) and 8.5% (WHO/2005); Xavánte 16.5 and 11.6%; Wari' 51.7 and 45.0%. None of the Suruí children were < -2 z scores for W/H (NCHS/1977 and WHO/2005); the frequencies of Xavánte children were 1.7 and 3.3% and Wari' 1.7 and 0.0%. The frequencies of Suruí children > 2 z scores for W/H were 3.9 (NCHS/1977) and 3.9% (WHO/2005); Xavánte 0.0 and 0.8%; Wari' 0.0 and 0.0%. The frequency of Suruí children aged 24-59 months > 2 z scores for BMI was 5.4% (WHO/2005); Xavánte 9.5%; and Wari' 0.0%. CONCLUSIONS: Our findings revealed important differences in the results from nutritional assessment, according to the set of growth curves used; however, the use of both growth curves revealed a high prevalence of malnutrition. Therefore, future studies with indigenous populations should present their results using two sets of growth curves to allow consistent comparison.

Nutrition transition in Amazonia: obesity and socioeconomic change in the Suruí Indians from Brazil.

The purpose of this study was to assess the nutritional status of the adult Suruí population, an indigenous society from the Brazilian Amazon, as it relates to socioeconomic conditions. Fieldwork was carried out in February-March 2005, including 252 individuals (88.1% of the total eligible subjects older than 20 years of age in the villages surveyed). Anthropometric measurements were performed following standard procedures, and percentage of body fat (%BF) was measured by bioimpedance. To classify the Suruí according to socioeconomic status (SES), an index was constructed based on a group of variables to characterize socioeconomic differentiation. Evaluated by body mass index (BMI), the majority of Suruí 20-49.9 years of age were overweight (42.3%) or obese (18.2%). The frequency of obesity for women (24.5%) was twice that recorded for men. Subjects classified as overweight or obese also showed high %BF and waist circumference (WC). Women in the high SES category showed higher anthropometric values (including weight, BMI, arm fat area, and WC) and %BF than those of lower SES. This study shows that the Suruí are undergoing a rapid process of nutrition transition. This transition is closely associated with the emergence of intragroup differences in SES which have impacted diet and physical activity patterns. In research in indigenous peoples in Amazonia, greater attention should be paid to the human biological outcomes of socioeconomic transformations related to the growing involvement of native societies in the market economy.

Estado nutricional e anemia em crianças Suruí, Amazônia, Brasil / Nutritional status and anemia in Suruí Indian children, Brazilian Amazon

OBJETIVO: Analisar o perfil nutricional de crianças indígenas Suruí menores de 10 anos através da antropometria e da dosagem de hemoglobina. MÉTODOS: A pesquisa foi conduzida em fevereiro-março de 2005 na Terra Indígena Sete de Setembro, na fronteira de Rondônia com Mato Grosso. Estatura e peso foram obtidos segundo técnicas padronizadas e comparados à referência do National Center for Health Statistics (n = 284). A concentração da hemoglobina foi determinada utilizando beta-hemoglobinômetro portátil (Hemocue) (n = 268). RESULTADOS: As porcentagens de crianças com déficit (escore z < -2) nos índices estatura para idade, peso para idade e peso para estatura foram 25,4, 8,1 e 0 por cento, respectivamente. Nas menores de 5 anos, foram 31,4, 12,4 e 0 por cento, respectivamente. A ampla maioria das crianças estava anêmica (80,6 por cento), alcançando 84,0 por cento naquelas de 6 a 59 meses de idade. CONCLUSÕES: Os resultados apontam para um quadro de alta prevalência de desnutrição e anemia nas crianças Suruí. A comparação com resultados de inquérito anterior indica que houve redução expressiva na prevalência de baixa estatura para idade entre 1987 e 2005 (de 46,3 para 26,7 por cento nas crianças menores de 9 anos). Por sua vez, 3,9 por cento das crianças apresentaram sobrepeso em 2005, o que não foi observado em 1987. As prevalências de anemia não se modificaram substancialmente entre os dois períodos. Apesar das melhoras observadas no perfil antropométrico, as prevalências de déficits nutricionais ainda permanecem muito mais elevadas que as observadas na população brasileira em geral. Impõe-se a necessidade da implantação de atividades sistemáticas e regulares de monitoramento do crescimento e desenvolvimento das crianças indígenas, com ênfase na vigilância nutricional.

OBJECTIVE: To assess the nutritional status of Suruí Indian children aged less than 10 years by means of anthropometric measurements and determination of hemoglobin concentration levels. METHODS: The study was carried out from February to March 2005 in the Sete de Setembro Indian Reservation, located on the boundary between the states of Rondônia and Mato Grosso, Amazonia, Brazil. Height and weight were measured according to standard procedures and then compared with the National Center for Health Statistics reference values (n = 284). Hemoglobin concentration was determined by a portable beta-hemoglobinometer (Hemocue) (n = 268). RESULTS: The percentages of children > -2 z scores for height for age, weight for age and weight for height were 25.4, 8.1 and 0 percent, respectively. For children aged less than 5 years, the percentages were 31.4, 12.4 and 0 percent. Most children had anemia (80.6 percent), with a rate of up to 84.0 percent among those aged 6 to 59 months. CONCLUSIONS: There is a high prevalence of protein-energy undernutrition and anemia among Suruí children. Comparison with a previous survey indicated that the prevalence of height for age deficit significantly decreased between 1987 and 2005 (from 46.3 to 26.7 percent in children younger than 9 years). On the other hand, 3.9 percent of the children were overweight in 2005, a finding that had not been reported in 1987. The prevalence of anemia did not change remarkably between these years. Despite the improvement in anthropometric parameters, the prevalence of nutritional deficit has been persistently higher than that observed in the Brazilian population at large. It is therefore necessary that systematic and regular monitoring of indigenous children's growth and development be implemented, focusing mainly on nutritional surveillance.

Nutritional status and anemia in Suruí Indian children, Brazilian Amazon.

OBJECTIVE: To assess the nutritional status of Suruí Indian children aged less than 10 years by means of anthropometric measurements and determination of hemoglobin concentration levels. METHODS: The study was carried out from February to March 2005 in the Sete de Setembro Indian Reservation, located on the boundary between the states of Rondônia and Mato Grosso, Amazonia, Brazil. Height and weight were measured according to standard procedures and then compared with the National Center for Health Statistics reference values (n = 284). Hemoglobin concentration was determined by a portable Beta-hemoglobinometer (Hemocue) (n = 268). RESULTS: The percentages of children