Nutritional Status of Selenium and Its Association with Diet and Indoor Air Pollution among Pregnant Women in a Rural Area of Northern China

Jiahe Liu, Lei Jin and Aiguo Ren
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Jiahe Liu: Institute of Reproductive and Child Health, National Health Commission Key Laboratory, Department of Epidemiology and Biostatistics, School of Public Health, Peking University, Beijing 100191, China
Lei Jin: Institute of Reproductive and Child Health, National Health Commission Key Laboratory, Department of Epidemiology and Biostatistics, School of Public Health, Peking University, Beijing 100191, China
Aiguo Ren: Institute of Reproductive and Child Health, National Health Commission Key Laboratory, Department of Epidemiology and Biostatistics, School of Public Health, Peking University, Beijing 100191, China

IJERPH, 2021, vol. 18, issue 22, 1-12

Abstract: The nutritional status of selenium (Se) in pregnant women in rural areas of northern China and its association with diet and indoor air pollution are rarely reported. We recruited 273 pregnant women in early or middle term in Shanxi and Hebei province and detected their fasting blood selenium. Demographic characteristics, food habits, and indoor air pollution exposure were collected with a questionnaire. Multivariate logistic regression models were used to estimate the adjusted odds ratios (AORs) and their 95% confidence intervals for the factors and relatively low blood levels of Se (below the lower quartile). The median (interquartile range [IQR]) blood concentration of Se was 117.35 (103.90, 129.23) ?g/L. The rate of Se deficiency was 4.8%, and the rate of overnutrition was 23.8%. The AORs for the risk for relatively low blood levels of Se were 2.26 (1.15, 4.44) for consuming less beef and pork/mutton; 0.39 (0.19, 0.80) for a lower frequency of vinegar consumption; and 1.41 (0.76, 2.60) and 1.18 (0.59, 2.36) for passive smoking and indoor coal pollution, respectively. In conclusion, the nutritional status of Se in pregnant women in a rural area of northern China was acceptable; diet was the main determinant; no conclusive association was found between indoor air pollution and Se nutritional status.

Keywords: selenium; pregnant women; China; food habits; indoor air pollution (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2021
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