How many parents have yelled at their children about adding years to their lives? Probably quite a few of you.
Well, turns out this is not just an expression used to admonish children for being unruly, it's actually a scientific fact!
According to Scary Mommy, researchers in the U.S. and France, published this week in the journal Demography, found that having three or more children, instead of two, led to worse cognitive function later in life.
Eric Bonsang, one of the researchers, said, "The negative effect of having three or more children on cognitive functioning is not negligible, it is equivalent to 6.2 years of aging."
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