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16th December 2018
11:40pm GMT

"We had no knowledge of whether childlessness was intentional," they said in notes, but added that "the association with childlessness was highly consistent."
This conclusion echoes what other research concluded over 10 years ago.
A 2006 study found that women attending a fertility clinic in Atlanta were more likely to conceive if they themselves had been born to younger mums.
The findings from this study suggested that the closer a woman is to menopause when she gives birth, the more likely it is that her daughter will have trouble conceiving as an adult.
"When we are treating patients close to the age of 40, we are helping them get babies but, at the same time, these children will have a higher risk of becoming infertility patients," Peter Nagy of Reproductive Biology Associates in Atlanta said at the time.
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