Can BPA affect placenta cell stress pathways?
Use caution with BPA food-contact exposure during pregnancy. A 2026 Reproductive Toxicology cell study found BPA activated IRE1-dominant endoplasmic reticulum stress, apoptosis, and functional impairment in BeWo trophoblast cells.
What is actually in it
BPA is used in some polycarbonate plastics and epoxy resins. Exposure can come from food-contact materials, thermal paper, and environmental sources.
During pregnancy, BPA is worth reducing where practical. The biggest everyday food-contact steps are avoiding heat with plastic and using glass or ceramic for leftovers.
What the research says
A 2026 Reproductive Toxicology study used BeWo trophoblast cells, a lab model for placental cell function. BPA activated IRE1-dominant endoplasmic reticulum stress, increased apoptosis, and impaired trophoblast differentiation and secretion markers.
This is cell evidence. It does not prove that one food package damages a placenta. It does show a plausible stress pathway worth taking seriously during pregnancy.
What to do at home
Do not microwave food in plastic. Move hot leftovers into glass or ceramic. Limit repeated use of old, scratched, or cloudy plastic containers.
If you are pregnant, focus on simple food-contact swaps you can keep. For pregnancy or placenta concerns, talk with your clinician.
The research at a glance
| Study | Journal | Year |
|---|---|---|
| Bisphenol A induces IRE1-dominant endoplasmic reticulum stress, apoptosis, and functional impairment in BeWo trophoblast cells. | Reprod Toxicol | 2026 |