The onset of the menopause in humans has been linked to men failing to fly the nest.
Women have the unusual trait of undergoing the menopause - in contrast with the females of most other species that reproduce until the day they die.
Researchers at the University of Liverpool and Liverpool John Moores University discovered the evolution of the menopause in humans was boosted by the tendency for sons and grandsons to remain living close to home.
The two-year study looked at the "grandma hypothesis" - that women lived long past the reproductive age in order to help successfully raise their grandchildren.
Co-author and zoologist Dr Hazel Nichols, of Liverpool John Moores, said: "It is important that the investigation focuses on the males staying because traditionally in the human race a woman will leave her family when she settles down with a man.
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"When she gets married she would go off and join him. She won't have any relatives to help out.
"When she gets older, she will have children and she will have her descendants to help.
"The idea with this investigation is to compare species, and the idea is that when human males stay at home, the older women will enter the menopause because they are required to help out with raising younger members of the family rather than continuing to have their own children."
Evolutionary biologist Dr Kevin Arbuckle, of the University of Liverpool, said: "Our results suggest that the menopause arose through a non-adaptive 'mismatch' between lifespan and reproductive span.
"Subsequently, we think that in populations where males remained at home and females dispersed to reproduce, an adaptive benefit drove the extension of this post-reproductive period."
