Size Of A Man's Testicles Linked To His Parenting Skills: ''Men With Smaller Testicles Are Better Fathers''...Research

Men with small testicles are likely to be more nurturing and better fathers to their children.

A new study from Emory University finds that men who tend to be a loving parent also have smaller testicles. The research, released in the Proceedings of the National Academy of Sciences, involved 70 men of varying ethnicities — most were Caucasian, five were Asian and 15 were African-American – with at least one child under two years old.

Prior studies have suggested that decreases in testosterone may suppress mating efforts, which potentially channels a man’s energy toward the care of infants and make these men more empathetic.

“Our data suggest that the biology of human males reflects a trade-off between mating and parenting effort,” says Emory anthropologist and study lead author James Rilling,

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