IVF success rate halved after first few attempts

The success rate of fertility treatments have been called in to question following research conducted by the University of California

Experts have warned that a couple’s chances of becoming pregnant using IVF are almost halved after just the second attempt.

New figures, published in the Journal of Fertility and Sterility, suggest 59% of couples become pregnant after one cycle of treatment, while the chances drop to 35% for those couples who have undergone two or three attempts.

And it’s not cheap either, with couples spending up to £100,000 on numerous rounds of fertility treatment.

Dr James Smith of the University of California, San Francisco said, ‘IUI and IVF are all effective treatment choices, but their benefits don’t continue indefinitely.’

Researchers at the University looked at 408 couples receiving treatment from eight different fertility centres.

One in five of the couples did not receive any treatment and 28% of those had fallen pregnant within 18 months.

Despite an 85% pregnancy success rate in couples given fertility drugs and a 71% success rate in those undergoing IUI, the advantage of these treatments dropped significantly after several rounds.

The rate of success disappeared completely in couples engaging in their third attempt of IUI.


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