Women
aged 49 and above are significantly less likely to achieve a successful
pregnancy through fertility treatment, even when using eggs
donated by younger women, according to new research that challenges long-held
assumptions about reproductive ageing.
The study, which analysed 1,774 women undergoing in vitro fertilisation
(IVF) with donor eggs, found that while donor eggs improve the chances of
conception, they do not completely offset the effects of ageing on the uterus.
Researchers reported that women aged between 35 and 40 had a 54 per cent chance of becoming pregnant following IVF with donor eggs, compared with about 43 per cent among women aged 49 and older. Live birth rates also declined from 46 per
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