Dr. Darby Saxbe

speaker

745 appearances 1 recordings 1 series first heard Jul 2026 last heard 27 Jul

Dr. Darby Saxbe’s voice in public audio — every appearance, attributed to the second.

Trend

recordings per month · last 12 months

Recordings per month over the last 12 months — 1 in all, peaking in Jul 2026 with 1.

newest first · ▶ plays the moment

So birds are the classic example.

Testosterone levels rise at the start of breeding season.

When birds are competing for mates, they're looking to spread their seed.

They want as many opportunities as possible, so they need status to try to find a partner.

And then after mating has been accomplished,

It's immunologically costly to maintain perpetually high levels of T. Testosterone naturally decreases.

And the reproductive strategy is shifting towards more nurturing.

So instead of maximizing our numbers of babies that we can produce, we want to maximize the odds that any given baby is going to survive.

And our hormones kind of follow suit.

And you see it in primates, you see it in rodents, as well as in humans, you see these natural shifts.

So typically when testosterone decreases, it's serving a function whereby dads are getting more invested in the partner relationship.

They are more interested, more motivated to maintain a stable pair bond, and they're less aggressive.

So a lot of the work in rodents has looked at sort of territorial aggression and

And, you know, when you see a new pup in the nest, do you want to kill them or do you want to care for them?

And testosterone levels can sort of modulate where you end up along that continuum.

So we want, in general, if anyone is spending a lot of time with infants, to be less motivated to kill and more motivated to care.

Yeah.

Goes down.

And you see that, you know, you see actually in some ways health improvements.

We can talk about dad bod at some point, I'm sure.

Showing 341–360 of 745 · page 18 of 38