A steady supply of new ethical questions is an inextricable part of assisted reproduction. But for many, they will be a price worth paying
job, working for roughly half of those who try it. That makes alternative approaches less urgent. At the same time it masks the fact that growing drivers of infertility today—most notably, people seeking to start their families later—are not the sort of physical problems thatwas designed to address. Thus an increasing number of people find themselves left behind by reproductive medicine, with all the frustration and heartache that follows.
Rather than being optimised according to an understanding of what happens naturally, current practices are developed on the basis of what has worked in the past. Different clinics have different practices for how to store sperm samples ahead of fertilisation. Embryologists who have analysed the commercial solutions in which clinics grow embryos have found different make-ups.
Help seems to be at hand. Basic research into stem cells has brought forth the possibility, though still a distant one, of making eggs and possibly sperm for use in clinics through. The provision of eggs for research is a nearer-term possibility, freeing researchers from their reliance on donations. And the insights derived from watching and manipulating the production of eggs and sperm should prove very useful.
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