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Active parenting reduces testosterone in men

Guy 1: How are things going with your new baby?

Guy 2: Oh, you know, that’s pretty much Amy’s deal.

We swear to god, this is an exact transcript of a conversation that took place between a friend of ours and one of his college buddies. Sure, it’s an extreme example, but it’s not an isolated incident. Another guy told Em’s husband that his social life had altered “about 10%” since having a kid. And even many evolved, sensitive, awesome guys that we know can hover around the perimeter during the early stages of fatherhood, more like a friendly uncle than a parent.

It’s understandable, in many ways, given how mom-focused (okay, boob-focused) most babies are. But it turns out that despite all this, men’s bodies biologically adapt to parenthood, too. And we don’t just mean the shooting sperm part. As we reported earlier this week, a new study found that men’s testosterone drops when they become dads. What’s even more interesting is that the more a man gets involved with that whole parenting gig, the more his testosterone stops.

Don’t worry, dudes. It’s not the kind of plummet that would cause you to lose your chest hair or grow moobs. More like the kind of gentle dip that might make you slightly less susceptible to a flirtatious waitress… and slightly more open to singing “The Wheels on the Bus” for the hundredth time that week. In other words, it looks like men’s bodies have evolved to help them commit to their families once kids show up. Which means that, evolutionarily speaking, nature wants men to change diapers.