Prenatal mercury exposure in a multicenter cohort study in Spain

▶ We measured cord blood Hg levels and determinants in a Spanish multicenter cohort. ▶ A high proportion of newborns had elevated concentrations of cord blood Hg. ▶ Hg levels were related to maternal fish intake, large oily fish the main contributor. ▶ Maternal age, country of origin, education, work and parity were also associated. ▶ Other determinants were area of study and season at delivery