Eric Topol

What's going on here?

Is there anything to cold plunges?

Oh, really?

Yeah.

Right.

And a cold shower is different than going into one of these plunges, you know, putting your whole body in there.

Wow.

I could not do that.

Plus as a cardiologist,

I got patients who, if they did that, they could have an MI.

You know, they could go into vasospasm and get in big trouble.

And a lot of people don't even know they have arterial disease.

Okay.

Now, another big thing these days about the vagus nerve that people with sensors are measuring, wearables, whether it's a ring or whether it's a mattress sensor or a smartwatch, is heart rate variability.

And they're equating that to everything.

In fact, ChatGPT Health made that like the number one thing about a person's health is how is the HRV?

And there's an article from the Washington Post about that this week.

Anyway, what is your sense about this measurement that has very difficult literature associated with it?

And it obviously has a lot to do with the autonomic nervous system.

Yeah, and I think this is why it's so crazy that the outputs from various, as you say, proprietary algorithm companies