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Correlations of Biomarkers and Self-Reported Seafood Consumption among Pregnant and Non-Pregnant Women in Southeastern Louisiana after the Gulf Oil Spill: The GROWH Study

Author

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  • Leah Zilversmit

    (Department of Epidemiology, Tulane School of Public Health and Tropical Medicine, New Orleans, LA 70112, USA)

  • Jeffrey Wickliffe

    (Department of Global Environmental Health Sciences, Tulane School of Public Health and Tropical Medicine, New Orleans, LA 70112, USA)

  • Arti Shankar

    (Department of Global Biostatistics and Data Science, Tulane School of Public Health and Tropical Medicine, New Orleans, LA 70112, USA, sarti@tulane.edu)

  • Robert J. Taylor

    (Department of Veterinary Integrative Biosciences, Texas A&M University, College Station, TX 77843, USA)

  • Emily W. Harville

    (Department of Epidemiology, Tulane School of Public Health and Tropical Medicine, New Orleans, LA 70112, USA)

Abstract

Seafood contains health-promoting fatty acids, but is often contaminated with mercury (Hg), complicating recommendations and choices around fish consumption during pregnancy. Self-reported diet may be subject to inaccuracy and this inaccuracy could differ according to pregnancy status. We investigated correlations between self-reported seafood consumption and blood levels of Hg and n-3 polyunsaturated fatty acids (PUFAs) in women affected by the Deepwater Horizon oil spill. Spearman correlation coefficients were calculated comparing log blood Hg and n-3 PUFAs to seafood consumption, then stratified by pregnancy status. Crude and adjusted linear regression models were constructed using biomarkers of Hg and n-3 PUFA and seafood consumption, adjusting for age and pregnancy status. Weak but significant correlations were found between log Hg levels and intake of Hg-containing seafood ( r = 0.15) and were slightly stronger among pregnant women ( r = 0.22, vs. r = 0.10). Biomarkers for n-3 PUFAs were significantly correlated with seafood consumption ( r = 0.12). Hg-containing seafood consumption was associated with increased blood level Hg in the highest quartile in both unadjusted (β = 0.34, 95% CI: 0.15–0.53) and adjusted models (β = 0.28, 95% CI: 0.08–0.48). Self-reported seafood consumption was correlated with biomarkers of both n-3 PUFA and Hg, but this association was different when stratified by pregnancy status. Pregnant women may have better recall of Hg-containing seafood compared to nonpregnant women.

Suggested Citation

  • Leah Zilversmit & Jeffrey Wickliffe & Arti Shankar & Robert J. Taylor & Emily W. Harville, 2017. "Correlations of Biomarkers and Self-Reported Seafood Consumption among Pregnant and Non-Pregnant Women in Southeastern Louisiana after the Gulf Oil Spill: The GROWH Study," IJERPH, MDPI, vol. 14(7), pages 1-12, July.
  • Handle: RePEc:gam:jijerp:v:14:y:2017:i:7:p:784-:d:104753
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    Cited by:

    1. Megan Flaviano & Emily W. Harville, 2020. "Adverse Childhood Experiences on Reproductive Plans and Adolescent Pregnancy in the Gulf Resilience on Women’s Health Cohort," IJERPH, MDPI, vol. 18(1), pages 1-15, December.

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