Pregnancy Outcomes and PFAS Exposure
Epidemiological research has identified associations between higher maternal PFAS serum levels and adverse pregnancy outcomes including preeclampsia, gestational hypertension, and reduced birth weight. Studies in populations with elevated PFAS exposure from drinking water — including the PFAS-contaminated community near the Ronneby, Sweden military base — have found statistically significant associations between PFAS exposure and these adverse outcomes. The biological mechanisms may involve PFAS interference with hormonal signaling pathways relevant to placental development and fetal growth.
Fertility Effects
Animal studies have consistently shown PFAS effects on reproductive endpoints at doses relevant to human exposure ranges. Epidemiological studies in humans are more mixed but have found associations between PFAS blood levels and longer time to conception, altered menstrual cycle length, and earlier menopause onset in some cohort studies. Male fertility indicators including sperm count, motility, and morphology have also shown associations with PFAS exposure in several studies, though findings are not entirely consistent across research groups.
Child Development Outcomes
Children born to mothers with higher PFAS exposure during pregnancy have been studied for a range of developmental outcomes. Associations have been identified with lower birth weight, reduced breast milk production affecting breastfeeding duration, altered neurodevelopment including attention and executive function measures, and accelerated puberty onset in girls. The developmental window during pregnancy and early infancy represents a period of heightened PFAS vulnerability given the direct transfer of PFAS from mother to fetus and infant.
Recommendations for Reproductive-Age Individuals
Medical organizations including the American College of Obstetricians and Gynecologists recommend that clinicians discuss PFAS exposure reduction with pregnant patients and those planning pregnancy. Drinking water PFAS treatment, dietary modifications to reduce fish consumption from contaminated sources, and avoidance of PFAS-containing cookware and food packaging are among the practical reduction strategies applicable to this population. These recommendations reflect the precautionary principle given the potential developmental consequences of PFAS exposure during critical windows.