Tin Exposure During Pregnancy Causes Neural Tube Defects
NonToxCo Research
Science & Safety Team · 4/7/2026
Tin in a pregnant mother's blood is linked to neural tube defects in babies. And animal experiments prove the connection is causal.
200 Cases, 400 Controls
A 2026 study in Environ Toxicol compared 200 neural tube defect (NTD) cases with 400 healthy controls. Elevated tin in maternal serum was associated with increased NTD risk. Tin was also measured in placental tissue.
Animal Models Confirm Causation
When pregnant mice were exposed to tributyltin (TBT) at 10-40 mg/kg, their offspring developed neural tube defects at a rate of 25.5-27.6%. That's roughly one in four fetuses with a devastating birth defect.
The mechanism: TBT caused oxidative stress and apoptosis in embryonic neural tissue, with MAPK signaling hyperactivation driving the damage.
Vitamin E Helped
Vitamin E supplementation reduced the oxidative stress, MAPK activation, and NTD rates in the animal model. That means the damage pathway can potentially be interrupted.
Where Tin Exposure Comes From
Tin is in canned food linings, PVC stabilizers, pesticides (fungicides), and some industrial products. Tributyltin specifically was used in marine paints and still persists in waterways.
What Expecting Mothers Can Do
Reduce canned food intake during pregnancy. Eat fresh or frozen instead. Discuss vitamin E with your doctor. And choose non-toxic baby products to lower your overall chemical exposure.
Also see glass food storage for safer alternatives.