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Older Women's Fertility: Womb's Age Matters Most
7 Jul
Summary
- Fertility treatment success drops significantly after age 49.
- Womb lining changes, not just eggs, impact pregnancy chances.
- Donor eggs offer hope but don't fully reverse reproductive aging.
New research suggests older women, particularly those aged 49 and over, experience a significant decrease in fertility treatment success, even when using young donor eggs. The study highlights that reproductive aging is more complex than previously thought, involving age-related changes in the womb lining.
Researchers observed that women aged 49 and above had double the risk of miscarriage and a lower likelihood of conception compared to younger counterparts. Pregnancy success rates with donor eggs and IVF fell from 54% for women in their mid to late 30s to around 43% for those 49 or older.
These findings challenge the notion that donor eggs fully reset the reproductive clock. Experts believe age-related decline in the endometrium, the womb lining where embryos implant, might be the cause. While current treatment success rates remain meaningful, counseling patients about the persistent effects of reproductive aging, especially beyond 49, is crucial.
Despite the challenges, experts stress that these results should not deter older couples from pursuing fertility treatments. Future research aims to identify ways to predict, prevent, or improve womb aging, potentially offering new avenues for treatment. The study's findings are being presented at the European Society of Human Reproduction and Embryology (ESHRE).
