Lead Stored in Your Bones Gets Released During Pregnancy
NonToxCo Research
Science & Safety Team · 4/7/2026
There is no safe blood lead level. And even if you haven't been exposed recently, lead stored in your bones from years ago gets released during pregnancy and crosses the placenta to your baby.
What the Review Explains
A 2026 review in J Obstet Gynecol Neonatal Nurs examined the current evidence on lead exposure during pregnancy and the perinatal period. The key finding: pregnancy itself mobilizes lead from bone storage into the bloodstream, exposing the fetus even when the mother's current environment is lead-free.
In utero lead exposure is linked to preterm birth, low birth weight, and neurodevelopmental delays in children. The damage starts before the baby is born.
Not Everyone Is Equally at Risk
Women and children of color face disproportionately high blood lead levels compared to White counterparts. This reflects decades of environmental racism: lead paint in older housing, proximity to industrial sites, and less access to clean water.
Screening Is Critical
The review advocates for universal lead screening during prenatal care, not just for high-risk populations. A simple blood test can identify exposure. Occupational and social history can reveal risk factors like old housing, certain hobbies, or workplace exposure.
How to Protect Your Baby
Get tested for lead during pregnancy. If you live in a pre-1978 home, test for lead paint. Filter your drinking water, especially if you have old pipes. Eat calcium-rich foods (calcium competes with lead for bone storage). Check out non-toxic baby products for a lead-free start.
Also see glass food storage for safer alternatives.