Women undergoing IVF or ICSI who have higher levels of PFOA in their blood are less likely to achieve pregnancy, possibly because PFOA interferes with the processes involved in embryo implantation or...

Pro

Against

Mechanism

Synthesis from 1 study

How it works

This chemical builds up in the uterus and stops the embryo from sticking properly, while also blocking the early placental cells from digging in and setting up blood flow. Without this critical first step, pregnancy can’t get started, even with IVF.

Most probable mechanism

In Simple Terms

Higher levels of this chemical in the blood interfere with the uterus lining’s ability to accept an embryo and block the early placental cells from properly attaching and spreading, making it harder for pregnancy to start.

Causal chain

PFOA accumulates in endometrial tissue and alters expression of adhesion molecules critical for embryo attachment

Indirect evidence only

which leads to

PFOA reduces secretion of signaling proteins that guide trophoblast cells to invade the uterine lining and remodel maternal blood vessels

Indirect evidence only

which leads to

Disrupted trophoblast invasion leads to inadequate placental formation and failure to establish stable maternal-fetal circulation

Indirect evidence only

Evidence from Studies

Supporting (1)

Community contributions welcome

Associations between per- and polyfluoroalkyl substances and reproductive outcomes among women undergoing in vitro fertilization/intracytoplasmic sperm injection treatment.

Cross-Sectional Study

Human

2026 Jan

Contradicting (0)

Community contributions welcome

No contradicting evidence found

Gold Standard Evidence Needed

According to GRADE and EBM methodology, here is what ideal scientific evidence would look like to definitively prove or disprove this specific claim, ordered from strongest to weakest evidence.

Source Study

Associations between per- and polyfluoroalkyl substances and reproductive outcomes among women undergoing in vitro fertilization/intracytoplasmic sperm injection treatment.

Score: 46

DOI: 10.1016/j.reprotox.2025.109107

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Women undergoing IVF or ICSI who have higher levels of certain long-chain PFAS chemicals in their bodies tend to have fewer eggs collected and lower-quality embryos, compared to those with lower levels.

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If women have higher levels of certain chemicals called PFAS in their blood and ovarian fluid, they may have a harder time getting pregnant through IVF — including fewer eggs, lower-quality embryos, and fewer live births — even when accounting for age, weight, and hormone levels.

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