Journal
INTERNATIONAL JOURNAL OF ENVIRONMENTAL HEALTH RESEARCH
Volume 30, Issue 4, Pages 421-434Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/09603123.2019.1597835
Keywords
Arsenic; growth; head circumference; cohort; Bangladesh
Funding
- Japan Society for Promotion Science [23310045]
- Grants-in-Aid for Scientific Research [23310045] Funding Source: KAKEN
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Arsenic exposure in postnatal life impacts the growth of children, but little is known about the effect of in-utero arsenic exposure on growth very early in childhood. The aim of this study was to examine the associations between in-utero arsenic exposure and the growth of infants from birth to 6 months of age using monthly follow-up data. A prospective cohort study was conducted in rural areas of Bangladesh with 108 mother-infant pairs. This study identified a negative association between in-utero arsenic exposure and head circumference of infants 1-6 months of age (coefficient = -1.20, 95% confidence interval [CI]: -1.97, -0.42), and the effect was more pronounced in the earlier ages of 1-3 months (coefficient = -0.88, 95% CI: -1.70, -0.05). Because head circumference is considered as a surrogate of brain size, our findings suggest that in-utero arsenic exposure influences brain growth during an important developmental period.
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