Men with smaller testicles make for better dads, according to data compiled by a university. It's something to do with having less testosterone pumping through your body and therefore being less macho and more likely to enjoy parenthood.
Researchers from Emory University analysed the brain activity of 70 men and also charted the size of their testicles. For science. Those with smaller balls showed more brain activity in the parts of the brain thought to be associated with caring impulses when handed photos of children, making them more likely to want to help a child and do the mundane, thankless parenting jobs.
However, the cause and timing of the shrinkage remains a mystery. Study author James Rilling isn't sure if the small balls or the caring impulses come first, saying: "We're assuming that testes size drives how involved the fathers are, but it could also be that when men become more involved as caregivers, their testes shrink." [Global Post]
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