Peter Attia

And I think we must have connected at his institute and then the rest is kind of history.

We then, through our friendship, became very deeply involved in the testing of the earliest generations of various forms of synthetic ketones, a topic we will undoubtedly get to today because it's impossible to imagine how much proliferation there has been of these things that were, I mean, literally you're sending me like dirty plastic bottles with stuff in my kitchen that I'm experimenting with.

And it's like, now look at what you've done.

So maybe let's just talk a little bit about how your interest in this space came to be.

So even for my recollection, I don't recall, your PhD was in neuroscience, if I'm not mistaken.

Let's go back to something you said at the outset, just because folks might not understand why the Navy would be interested in the effects of too much oxygen.

When you think of the Navy, you think of being underwater.

When you think of being underwater, you think of oxygen deprivation.

So what is it about certain types of diving that actually bring about the opposite problem?

Explain to folks exactly what that is.

How does a rebreather work?

What's the concentration of oxygen that they're breathing in?

And the reason that they can do that is because you're not wasting gas on the 80% nitrogen.

You basically store the CO2 that's coming out.

Once you've scrubbed it, you've got pure O2 coming in.

So your volume of air needed is much lower because you're just solving for the oxygen.

I do want to talk about that.

There's a lot I want to ask you about hyperbaric oxygen, but I want to finish the swing on this particular application.

When was it clear to the Navy the problem that you described, which is when we have closed circuit rebreathers with 100% oxygen, we're running into problems with our divers.

These problems are dramatic.