Men’s biological clock for fathering kids slows down after 41
London: Experts have warned that the chances of fathering children after the age of 41 “decline rapidly”.
The warning came after a study of IVF patients in which the man’s sperm fertilised an egg from a donor, which all came from young, healthy women, therefore any differences in pregnancy rates were allegedly due to the sperm.
According to the study presented at the American Society for Reproductive Medicine’s annual conference, the difference was clear, with fertility declining by up to seven percent with each extra year on a man’s age between 41 and 45, and after that, it declined even more rapidly.
The average age of the men whose partners got treatment through IVF was 41, but the average age of those in which the IVF was unsuccessful was 45.
The chances of pregnancy fell from 60 percent at the age of 41 to just 35 percent for the 45-year-olds.
“Age counts,” the Daily Mail quoted Paula Fettback, a researcher as saying.
“Men have a biological clock too. It is not the same as for women but they can’ t wait forever to have children.
“They have to think about having children, especially after 45,” she said.
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