Research and evidence

To deal with the unacceptably high multiple birth rates following IVF, the HFEA carried out a review and public consultation identifing the most suitable policy for reducing these rates.

From the numerous studies and academic papers on multiple pregnancy and birth, our experts have selected the most recent and relevant research for inclusion on this website.

Many other countries have already successfully introduced a single embryo transfer policy – the multiple birth rate has plummeted while birth rates have remained largely unaffected.