Antonio Requena Miranda: When the Endometrium Is “Older” Than the Patient
Antonio Requena Miranda, Chief Medical Officer at IVI RMA Global, shared a post on LinkedIn:
“What if chronological age isn’t telling the full story of fertility?
A new study from IVI Foundation (Valencia) by Nataly Del Aguila, MSc. et al. (2026) introduces a powerful concept with major implications for reproductive medicine: endometrial epigenetic age acceleration (EEAA).
Epigenetic age reflects the biological age of a tissue based on DNA methylation patterns. When that biological age exceeds a patient’s chronological age, we speak of epigenetic age acceleration: a sign that the tissue may be aging faster than expected.
By analyzing endometrial biopsies from 91 women undergoing IVF, the authors found that epigenetic aging of the endometrium is not the exception, but the rule. On average, the endometrium appeared almost six years older than the woman’s chronological age.
But the most thought‑provoking result goes even further.
The highest epigenetic age acceleration was found in younger patients.
Women under 35, typically considered to have the best reproductive prognosis, showed the largest gap between chronological and biological endometrial age. As chronological age increased, this gap progressively narrowed.
This finding challenges a long‑standing paradigm in reproductive medicine, which has traditionally focused almost exclusively on ovarian age. It suggests that premature endometrial aging may exist and play a role in cases of unexplained infertility or recurrent implantation failure, even when embryo quality is good.
The key takeaway is clear:
Chronological age alone is not enough to assess endometrial functional status.
Epigenetic age, and particularly its acceleration, could emerge as a novel biomarker to detect subtle endometrial dysfunction and support a more personalized approach to IVF treatment.
Although further studies are needed to link EEAA directly with clinical outcomes, this work sends a strong message:
Not all endometria age at the same pace and some may age earlier than expected.
As reproductive medicine moves toward precision and personalization, looking beyond the calendar may be more important than ever.”
Proceed to the pages attached to the post.
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