Women undergoing IVF or ICSI who are exposed to multiple PFAS chemicals tend to have fewer eggs collected, fewer mature eggs, and fewer high-quality embryos compared to those with lower exposure.

Pro

Against

Mechanism

Synthesis from 1 study

How it works

PFAS chemicals build up in the ovaries and mess with the hormones needed for eggs to grow and mature. This makes fewer eggs ready for fertilization, and those that are fertilized often don’t develop into healthy embryos. The pattern across all these failed steps points to one root problem: the...

Most probable mechanism

In Simple Terms

Chemicals called PFAS build up in the body and interfere with the hormones that help eggs grow and mature inside the ovaries. This causes fewer eggs to develop properly, reduces the chance they get fertilized correctly, and leads to embryos that don’t develop into healthy blastocysts.

Causal chain

PFAS accumulate in ovarian tissue and bind to nuclear receptors that regulate steroid hormone synthesis, altering the production of estradiol and progesterone

Indirect evidence only

which leads to

Disrupted steroid hormone levels impair granulosa cell function, reducing follicular growth and oocyte maturation

Indirect evidence only

which leads to

Altered follicular microenvironment decreases oocyte quality and compromises meiotic spindle formation, leading to abnormal fertilization and reduced 2PN zygote formation

Indirect evidence only

which leads to

Embryonic cleavage and blastocyst formation are impaired due to mitochondrial dysfunction and oxidative stress in oocytes and early embryos

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

Similar Assertions

Women undergoing IVF or ICSI who have higher levels of the chemical PFHxS in their blood tend to produce fewer high-quality embryos, according to observed data.

78%

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 early placental formation.

77%

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.

76%

Women undergoing IVF or ICSI who have higher levels of a chemical called 6:2Cl-PFESA in their blood tend to produce fewer fertilized eggs and fewer embryos that progress to the cleavage stage.

74%