For more than a decade, thousands of older women undergoing in-vitro fertilization have relied on an expensive embryo-screening procedure to boost their chances of getting pregnant. But mounting evidence suggests that the procedure doesn’t help people become mothers.
The technique, known as pre-implantation genetic screening, or PGS, is performed in dozens of fertility clinics across the country. Most medical experts agree that embryo screening can significantly reduce the risk of serious chromosome-related illnesses, such as Down syndrome. But for older women trying to have a baby, the weight of evidence is now shifting against current PGS techniques.
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