A small number of childless people are left childless due to genetic mutations in their DNA that predispose them to not have a family, according to a new British genetic researchthe first to make this correlation.
This genetic background does not make people infertile, but reduces the likelihood of wanting to have children due to the manifestation of various cognitive and behavioral characteristics that reduce the likelihood of finding a mate for reproduction.
However, British scientists have pointed out that the genetic factor explains only a very small percentage (about 1%) of infertility, as other factors (social, economic, demographic, psychological, personal choices, etc.) play a more important role.
Researchers at the Wellcome Sanger Institute in Cambridge, led by Dr Matthew Hurls, published in the journal Nature and analyzed genetic data on nearly 341,000 people aged 39 to 73. They found that variations in certain genes that predispose to infertility are more common in men than in women.
Also – people – usually men – with these mutations are more likely to have a lower level of education and a lower income. However, even for those who have this genetic “profile”, the chance of having a child remains around 50-50.
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