A recent study from Emory University finds that men with smaller testicles and lower testosterone levels were better fathers, as they are more likely to be involved in the care and nurturing of their children, Medical Daily reports.
So basically, the larger a dad’s testicles, the higher chances that he would be a deadbeat dad.
The study, published in the Proceedings of the National Academy of Sciences, recruited 70 fathers with babies between the ages of 1 and 2 years old. The main goal was to determine why some fathers are less involved in parenting than others, but the Emory scientists wondered if there is a biological connection.
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. Environmental influences can change biology. We know, for instance, that testosterone levels go down when men become involved fathers.
Testicle size cannot be the only factor linked to a man’s parenting. Differences in size accounted for only a fifth of the variation in men’s parenting scores, Jennifer Mascaro, an anthropologist at Emory University said.
Read the details of the study as reported in Proceedings of the National Academy of Sciences.