TitleAssociations between Diet and Toenail Arsenic Concentration among Pregnant Women in Bangladesh: A Prospective Study.
Publication TypeJournal Article
Year of Publication2017
AuthorsLin, P-ID, Bromage, S, Mostofa, MGolam, Allen, J, Oken, E, Kile, ML, Christiani, DC
Date Published2017 Apr 23

This prospective study evaluated the relationship between long-term dietary habits and total arsenic (As) concentration in toenail clippings in a cohort of 1616 pregnant women in the Bangladeshi administrative regions of Sirajdikhan and Pabna Sadar. Diet was assessed at Gestation Week 28 and at Postpartum Month 1, using a locally-validated dish-based semi-quantitative food-frequency questionnaire. Toenail As concentration was analyzed by microwave-assisted acid digestion and inductively coupled plasma mass spectrometry. Associations between natural log-transformed consumption of individual food items and temporally matched natural log-transformed toenail As concentration were quantified using general linear models that accounted for As concentration in the primary drinking water source and other potential confounders. The analysis was stratified by As in drinking water (≤50 μg/L versus >50 μg/L) and the time of dietary assessment (Gestation Week 28 versus Postpartum Week 1). Interestingly, toenail As was not significantly associated with consumption of plain rice as hypothesized. However, toenail As was positively associated with consumption of several vegetable, fish and meat items and was negatively associated with consumption of rice, cereal, fruits, and milk based food items. Further studies in pregnant women are needed to compare As metabolism at different levels of As exposure and the interaction between dietary composition and As absorption.

Alternate JournalNutrients
PubMed ID28441747
PubMed Central IDPMC5409759
Grant ListK24 HD069408 / HD / NICHD NIH HHS / United States
P30 ES000002 / ES / NIEHS NIH HHS / United States
P42 ES005947 / ES / NIEHS NIH HHS / United States
T32 ES007069 / ES / NIEHS NIH HHS / United States
R01 ES011622 / ES / NIEHS NIH HHS / United States