Peter Attia, M.D.

In the case of the deer, all of the females go through esterase at the same time.

So it's easier for the bucks to say for these nine months, I don't need testosterone because all of the does are infertile.

And then bingo, now they're going through esterase.

We're going to go through the rut and it's a party.

Exactly.

But with humans, I understand there's some literature that says the more women that are together, the more their cycle sinks.

But that's got to be weak.

It is.

And by the way, women are ovulating every month.

In other words, you're saying it's hard for us to blame fertility in the Western world on declining testosterone.

Yeah, it could be the inflammation that arises from the metabolic dysfunction.

Exactly.

Exactly.

Going back to kind of Western society, so we see this roughly 1% per year drop in testosterone.

And so a guy in his 50s now has, hell, a guy in his 30s today has a lower testosterone than a guy in his 50s did 40 years ago.

So a guy in his 50s today has pretty low testosterone.

And

We certainly know that medically, it's a completely safe thing to replace.

And we know that there are great outcomes with respect to bone health, with respect to frailty and many subjective findings.

And we know that it's not increasing the risk of prostate cancer and heart disease and all the things we used to worry about outside of the edge case of hypertension, which can be managed.