Hormone tests for women’s fertility seem not to work
They estimate egg number, but not egg quality
Women seeking to defer motherhood are often encouraged to check their fertility. Though fecundity is tied to age, the effect of time’s passage varies. Some 35-year-olds find they cannot get pregnant. Others manage at the first attempt.
This article appeared in the Science & technology section of the print edition under the headline “Tests of unreason”
From the January 28th 2023 edition
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