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Carole Hooven, Ph.D.

๐Ÿ‘ค Speaker
1074 total appearances

Appearances Over Time

Podcast Appearances

The Peter Attia Drive
#374 - The evolutionary biology of testosterone: how it shapes male development and sex-based behavioral differences, | Carole Hooven, Ph.D.

And that comes next.

The Peter Attia Drive
#374 - The evolutionary biology of testosterone: how it shapes male development and sex-based behavioral differences, | Carole Hooven, Ph.D.

Yeah.

The Peter Attia Drive
#374 - The evolutionary biology of testosterone: how it shapes male development and sex-based behavioral differences, | Carole Hooven, Ph.D.

I'm sorry.

The Peter Attia Drive
#374 - The evolutionary biology of testosterone: how it shapes male development and sex-based behavioral differences, | Carole Hooven, Ph.D.

I'm sorry.

The Peter Attia Drive
#374 - The evolutionary biology of testosterone: how it shapes male development and sex-based behavioral differences, | Carole Hooven, Ph.D.

Yeah, yeah, yeah.

The Peter Attia Drive
#374 - The evolutionary biology of testosterone: how it shapes male development and sex-based behavioral differences, | Carole Hooven, Ph.D.

So I want to make sure, maybe I can just talk about it a little bit now.

The Peter Attia Drive
#374 - The evolutionary biology of testosterone: how it shapes male development and sex-based behavioral differences, | Carole Hooven, Ph.D.

So that conversion is via the enzyme 5-alpha reductase.

The Peter Attia Drive
#374 - The evolutionary biology of testosterone: how it shapes male development and sex-based behavioral differences, | Carole Hooven, Ph.D.

that's present in high concentrations in the genital tissue.

The Peter Attia Drive
#374 - The evolutionary biology of testosterone: how it shapes male development and sex-based behavioral differences, | Carole Hooven, Ph.D.

So what's interesting about this is that you have a mechanism to achieve high concentrations of a more potent androgen without that having to circulate through the general circulation, which you do not want in a developing fetus.

The Peter Attia Drive
#374 - The evolutionary biology of testosterone: how it shapes male development and sex-based behavioral differences, | Carole Hooven, Ph.D.

You want to be able to control the development of the penis,

The Peter Attia Drive
#374 - The evolutionary biology of testosterone: how it shapes male development and sex-based behavioral differences, | Carole Hooven, Ph.D.

say, which is one of the things that DHT does.

The Peter Attia Drive
#374 - The evolutionary biology of testosterone: how it shapes male development and sex-based behavioral differences, | Carole Hooven, Ph.D.

So the genital tubercle can become the clitoris or the penis essentially in the presence of testosterone and functional 5-alpha reductase.

The Peter Attia Drive
#374 - The evolutionary biology of testosterone: how it shapes male development and sex-based behavioral differences, | Carole Hooven, Ph.D.

It becomes a penis.

The Peter Attia Drive
#374 - The evolutionary biology of testosterone: how it shapes male development and sex-based behavioral differences, | Carole Hooven, Ph.D.

The labia grow and then fuse to become the scrotum and also the prostate.

The Peter Attia Drive
#374 - The evolutionary biology of testosterone: how it shapes male development and sex-based behavioral differences, | Carole Hooven, Ph.D.

DHT is necessary for full prostate development and can later sustain the function of the prostate.

The Peter Attia Drive
#374 - The evolutionary biology of testosterone: how it shapes male development and sex-based behavioral differences, | Carole Hooven, Ph.D.

So it is interesting because it is this solution to providing very strong androgenic signals in the tissues that need it without wasting energy on strong androgenic signals in the rest of the body.

The Peter Attia Drive
#374 - The evolutionary biology of testosterone: how it shapes male development and sex-based behavioral differences, | Carole Hooven, Ph.D.

So I don't think it would matter as much.

The Peter Attia Drive
#374 - The evolutionary biology of testosterone: how it shapes male development and sex-based behavioral differences, | Carole Hooven, Ph.D.

I think that DHT is something like two to five times more potent.

The Peter Attia Drive
#374 - The evolutionary biology of testosterone: how it shapes male development and sex-based behavioral differences, | Carole Hooven, Ph.D.

It could be more.

The Peter Attia Drive
#374 - The evolutionary biology of testosterone: how it shapes male development and sex-based behavioral differences, | Carole Hooven, Ph.D.

But what this means is that it binds the receptor more tightly and it stays on for longer, which means that it produces more of whatever the protein is that it's upregulating because it's a steroid.