October 2006

Older mothers pass on fertility risk

A study of women at a fertility clinic found that those who failed to become pregnant after treatment had older mothers than those who were successful. The researchers from Atlanta, advised that postponing childbirth had implications for future generations. Dr Peter Nagy, a fertility specialist, warned that the decline in quality of a women’s eggs […] Read more

Stem cells might cause brain tumors, study finds

Injecting human embryonic stem cells into the brains of Parkinson’s disease patients may cause tumors to form, U.S. researchers reported on Sunday. Steven Goldman and colleagues at the University of Rochester Medical Center in New York said human stem cells injected into rat brains turned into cells that looked like early tumors. Writing in the […] Read more

One embryo transfer per IVF cycle?

Women undergoing routine IVF in the UK should only have one embryo implanted, fertility experts have recommended. Current practice is to transfer two embryos into the womb during treatment. According to the group, the new proposal will drastically reduce the rate of multiple births, which are dangerous for both babies and mothers. CORE welcomes this […] Read more

Cord blood

NHS maternity units should discourage commercial banking of umbilical cord blood, argues a senior doctor in the British Medical Journal. Instead, women should be encouraged to donate altruistically to public blood banks. Cord blood banks generally fall into two groups. Public banks collect cord blood which has been altruistically donated. The blood is used to […] Read more


British scientists are seeking permission to create animal-human hybrids by fusing human cells with rabbit eggs. If granted consent, the team will attempt to produce embryos in order to derive stem cells that carry genetic defects. Scientists plan to remove the nuclei from animal eggs and replace them with human cells, leading to part-human, part-animal […] Read more