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Paediatr Perinat Epidemiol. 2015 Sep;29(5):376-87. doi: 10.1111/ppe.12205. Epub 2015 Jul 3.

Periconceptional Seafood Intake and Fetal Growth.

Author information

1
Department of Epidemiology, Cardiovascular Health Research Unit, University of Washington, Seattle, MA.
2
Department of Biostatistics, University of Washington, Seattle, MA.
3
Department of Environmental and Occupational Health Sciences, University of Washington, Seattle, MA.
4
Department of Medicine, University of Washington, Seattle, MA.
5
Department of Epidemiology, Harvard School of Public Health, Boston, MA.
6
Center for Perinatal Studies, Swedish Medical Center, Seattle, MA.

Abstract

BACKGROUND:

Previous reports of associations of maternal seafood intake with fetal growth were inconsistent. Further, little is known whether associations differ across seafood subtypes or fetal growth indices.

METHODS:

Among 3141 participants of the Omega study, a pregnancy cohort study, we investigated associations of periconceptional shell, lean, and fatty fish intake with fetal growth indices. We categorised food frequency questionnaire reported seafood intake into frequencies of: <0.2 servings/month, 0.2 servings/month -<0.5 servings/week, 0.5-1 servings/week, and >1 servings/week. We abstracted birthweight, birth length, and head circumference from medical records. Using generalised linear models with a log link, the Poisson family, and robust standard errors, we estimated relative risks and 95% confidence intervals (CI) for low birthweight (LBW, <2500 g) and linear regression models to estimate mean differences for continuous fetal growth indices across seafood intake categories.

RESULTS:

Medians (interquartile range) of shell, lean, and fatty fish intake were 0.3 (0-0.9), 0.5 (0-1.0), and 0.5 (0.1-1.0) servings/week, respectively. Lean fish intake of >1 servings/week (vs. <0.2 servings/month) was associated with a 2.2-fold higher risk of LBW (95% CI 1.2, 4.1). Shellfish intake of >1 servings/week (vs. <0.2 servings/month) was associated with a 0.6 kg/m(3) higher mean ponderal index (95% CI 0.0, 1.2 kg/m(3) ). There was no evidence for associations of total seafood or seafood subtype intake with other fetal growth indices.

CONCLUSIONS:

Higher intakes of lean fish and shellfish were associated with a higher risk of LBW and higher mean ponderal index, respectively. Findings highlight the importance of considerations of seafood subtype in similar investigations.

KEYWORDS:

birth weight; fetal growth; lean fish; omega 3 fatty acids; ponderal index; seafood

PMID:
26147526
PMCID:
PMC4536156
DOI:
10.1111/ppe.12205
[Indexed for MEDLINE]
Free PMC Article

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