Dr. Peter Attia

So even if they were taking some hit off the bike, it was probably more than compensated for by their healthy lifestyle, which included probably riding the bike. But obviously there's a healthy user bias because anybody who's riding their bike to work is probably consuming less Guinness, fewer fish and chips, smoking less.

So even if they were taking some hit off the bike, it was probably more than compensated for by their healthy lifestyle, which included probably riding the bike. But obviously there's a healthy user bias because anybody who's riding their bike to work is probably consuming less Guinness, fewer fish and chips, smoking less.

In other words, riding a bike is a proxy for being healthy, but in spite of that, it didn't offset that health risk, unless we found people who were equally healthy who didn't ride a bike.

In other words, riding a bike is a proxy for being healthy, but in spite of that, it didn't offset that health risk, unless we found people who were equally healthy who didn't ride a bike.

That's because it's a leather saddle and it fit to you. Yeah. Iconic. Okay, let's talk about alcohol specifically, and let's talk about any other recreational drugs.

That's because it's a leather saddle and it fit to you. Yeah. Iconic. Okay, let's talk about alcohol specifically, and let's talk about any other recreational drugs.

Any evidence that it's having an epigenetic effect? Probably. I don't know about evidence, but I'm sure it does. Let's talk about common recreational drugs. Let's start with marijuana.

Any evidence that it's having an epigenetic effect? Probably. I don't know about evidence, but I'm sure it does. Let's talk about common recreational drugs. Let's start with marijuana.

And we think that that's causal? I don't know. It just worries me. Weed worries me. Interesting, given that it otherwise seems kind of benign. I personally can't stand this stuff, but I know so many people that use it so frequently that seem to have relatively few effects.

And we think that that's causal? I don't know. It just worries me. Weed worries me. Interesting, given that it otherwise seems kind of benign. I personally can't stand this stuff, but I know so many people that use it so frequently that seem to have relatively few effects.

I'm not saying that one is driving stoned is good, but there are probably far fewer people that die at the hands of a stoned driver than a drunk driver. Probably.

I'm not saying that one is driving stoned is good, but there are probably far fewer people that die at the hands of a stoned driver than a drunk driver. Probably.

What do you think is the mechanism of action by which THC is having these negative fertility impacts? Not sure. I don't think it's the mechanism.

What do you think is the mechanism of action by which THC is having these negative fertility impacts? Not sure. I don't think it's the mechanism.

So you can get low testosterone, but it's not been that profound. What about nicotine, either synthetically or in the form of tobacco? Bad actor at high doses, I think, too. Either one? Yep.

So you can get low testosterone, but it's not been that profound. What about nicotine, either synthetically or in the form of tobacco? Bad actor at high doses, I think, too. Either one? Yep.

It's the oxidants that do it. It's oxidizing things. You mentioned diabetes earlier as part of your history and physical. What is it about diabetes? Is it the high levels of glucose? Is it the microvascular damage? Is it the inflammation that typically travels in parallel with it? Why is type 2 diabetes a risk factor for infertility?

It's the oxidants that do it. It's oxidizing things. You mentioned diabetes earlier as part of your history and physical. What is it about diabetes? Is it the high levels of glucose? Is it the microvascular damage? Is it the inflammation that typically travels in parallel with it? Why is type 2 diabetes a risk factor for infertility?

What's the physical finding you're seeing in the testes that tells you, like, you know how an ophthalmologist will often make the diagnosis because they're looking into the eye?

What's the physical finding you're seeing in the testes that tells you, like, you know how an ophthalmologist will often make the diagnosis because they're looking into the eye?