Freezing good for embryos
Steve Connor is the Science Editor of The Independent. He has won many awards for his journalism, including five-times winner of the prestigious British science writers’ award; the David Perlman Award of the American Geophysical Union; twice commended as specialist journalist of the year in the UK Press Awards; UK health journalist of the year and a special merit award of the European School of Oncology for his investigative journalism. He has a degree in zoology from the University of Oxford and has a special interest in genetics and medical science, human evolution and origins, climate change and the environment.
Friday 06 January 2012
Babies resulting from frozen IVF embryos are bigger at birth than IVF babies created from "fresh" embryos that are transferred to the womb within days of conception, a study has found.
Researchers at the Centre for Reproductive and Genetic Health in London believe freezing embryos before implanting them may give the uterus time to recover from the hormone drugs used to stimulate the production of eggs used in IVF.
It is known that IVF babies tend to be underweight, but the latest findings suggest this may be the result of overstimulating the ovaries with fertility drugs.
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