Prenatal exposure to organochlorine pesticides and TSH status in newborns from Southern Spain

► Prenatal exposure to endocrine-disrupting chemicals may interfere with neonatal thyroid hormone status. ► Limited data is available on the relation between thyroid hormone levels and early exposure to organochlorine pesticides. ► Placental levels of endrin and endosulfan-sulfate were associated with neonatal TSH, although no consistent pattern emerged.