Hypothesis
Gut dysbiosis can impair oocyte competency through follicular LPS/TLR4 signaling that suppresses aromatase, even when serum estradiol appears normal.
Evidence summary
Built on in vitro work showing TNF-α suppresses FSH-induced aromatase in granulosa cells, plus established LPS translocation biology.
Representative citations
Limitations
No prospective human trial directly tests this fertility application.
Competing explanation
Oocyte quality issues may be driven by age, mitochondrial copy number, or genetic factors unrelated to gut barrier.
What would weaken this claim
Human studies showing no relationship between gut barrier integrity and IVF outcomes after controlling for age.
Related pages
Educational mechanistic analysis only. Not medical diagnosis or treatment.