ArticleSao Paulo medical journal = Revista paulista de medicina2025
Selenium intake, food sources, and associated factors in Brazilian Longitudinal Study of Adult Health (ELSA-Brasil): a cross-sectional study.
Article in Sao Paulo medical journal = Revista paulista de medicina, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
backgroundSelenium is essential to human health. There are few reports on the analysis of selenium intake in the Brazilian population; however, data have shown that Brazilian are in the deficient range of consumption.
objectivesThis study aimed to identify the major foods that contribute to dietary selenium and determine the socioeconomic and lifestyle factors associated with selenium intake. DESIGN AND
settingThis cross-sectional study used baseline data from the Brazilian Longitudinal Study of Adult Health (ELSA-Brasil).
methodsSelenium consumption was evaluated using a food frequency questionnaire (FFQ) developed and validated for the ELSA-Brasil. To determine the contribution of selenium consumption, each food item was divided by the total selenium intake of the population. Associations between selenium intake (mg/day, dependent variable) and sociodemographic and lifestyle factors (predictors) were tested using multiple linear regression analyses.
resultsThe sample comprised 14,780 participants, most of whom were adults (78.5%). Individuals with income ≥ 3 minimum wages were mostly concentrated in the 5th quintile of selenium consumption; positive and significant correlations were found between selenium intake and female sex, age ≥ 60 years, income ≥ 3 minimum wages, higher or postgraduate education, alcohol consumption, and moderate physical activity level. Nuts and fish contributed the most to dietary selenium.
conclusionNuts, meat, and fish contributed the most to the dietary intake of selenium, and selenium intake was associated with sociodemographic and lifestyle factors among the evaluated individuals.
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