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716 total appearances

Appearances Over Time

Podcast Appearances

The Peter Attia Drive
#351 ‒ Male fertility: optimizing reproductive health, diagnosing and treating infertility, and navigating testosterone replacement therapy | Paul Turek, M.D.

And so the issue really is it got started that biking was bad for reproductive health. with a Spanish competitive cycling study. Competitive Spanish cyclists, Tour de France caliber cyclists, their sperm counts were examined.

The Peter Attia Drive
#351 ‒ Male fertility: optimizing reproductive health, diagnosing and treating infertility, and navigating testosterone replacement therapy | Paul Turek, M.D.

And so the issue really is it got started that biking was bad for reproductive health. with a Spanish competitive cycling study. Competitive Spanish cyclists, Tour de France caliber cyclists, their sperm counts were examined.

The Peter Attia Drive
#351 ‒ Male fertility: optimizing reproductive health, diagnosing and treating infertility, and navigating testosterone replacement therapy | Paul Turek, M.D.

Not a good group to study. Yeah. So their sperm counts were low, their morphologies were off, and they're extreme athletes. So we know that, and we know maybe they were on drugs, maybe they were, you know, it's a big industry. They're super fit. They're certainly exercising two hours a day. And so they said, look at these guys who are really healthy and look at their sperm counts.

The Peter Attia Drive
#351 ‒ Male fertility: optimizing reproductive health, diagnosing and treating infertility, and navigating testosterone replacement therapy | Paul Turek, M.D.

Not a good group to study. Yeah. So their sperm counts were low, their morphologies were off, and they're extreme athletes. So we know that, and we know maybe they were on drugs, maybe they were, you know, it's a big industry. They're super fit. They're certainly exercising two hours a day. And so they said, look at these guys who are really healthy and look at their sperm counts.

The Peter Attia Drive
#351 ‒ Male fertility: optimizing reproductive health, diagnosing and treating infertility, and navigating testosterone replacement therapy | Paul Turek, M.D.

But this other data didn't come out. So I did a blog called Cycling into Childlessness. And I looked at a more comparable study, which was British commuting cyclists, everyday people bicycling to work in Britain. on different saddles. And I looked at their fertility and their fertility was far better than the average Brit.

The Peter Attia Drive
#351 ‒ Male fertility: optimizing reproductive health, diagnosing and treating infertility, and navigating testosterone replacement therapy | Paul Turek, M.D.

But this other data didn't come out. So I did a blog called Cycling into Childlessness. And I looked at a more comparable study, which was British commuting cyclists, everyday people bicycling to work in Britain. on different saddles. And I looked at their fertility and their fertility was far better than the average Brit.

The Peter Attia Drive
#351 ‒ Male fertility: optimizing reproductive health, diagnosing and treating infertility, and navigating testosterone replacement therapy | Paul Turek, M.D.

Yeah, I don't remember what they controlled for, but I think they did a lot of the socioeconomics. It may just have been activity, but the bicycle- So is this a myth? Yes. Now, if you said, am I worried about biscus? Yes. So I worry about sexual health. I worry about the pudendal nerve and I worry about seat anatomy. So the best seat for a biscus. So if you're biking a lot, that's good.

The Peter Attia Drive
#351 ‒ Male fertility: optimizing reproductive health, diagnosing and treating infertility, and navigating testosterone replacement therapy | Paul Turek, M.D.

Yeah, I don't remember what they controlled for, but I think they did a lot of the socioeconomics. It may just have been activity, but the bicycle- So is this a myth? Yes. Now, if you said, am I worried about biscus? Yes. So I worry about sexual health. I worry about the pudendal nerve and I worry about seat anatomy. So the best seat for a biscus. So if you're biking a lot, that's good.

The Peter Attia Drive
#351 ‒ Male fertility: optimizing reproductive health, diagnosing and treating infertility, and navigating testosterone replacement therapy | Paul Turek, M.D.

If you're biking and you're getting pelvic numbness, that's bad. Okay. So you need to get a better seat. The best seat was studied by the NACH, the NA, I forgot, it was Dr. Schrader at the NIH. The best seat is the saddles that are shaped like this are bad for your sit bones because they come into the middle where the arteries and nerves are to the penis. So it's an erection issue.

The Peter Attia Drive
#351 ‒ Male fertility: optimizing reproductive health, diagnosing and treating infertility, and navigating testosterone replacement therapy | Paul Turek, M.D.

If you're biking and you're getting pelvic numbness, that's bad. Okay. So you need to get a better seat. The best seat was studied by the NACH, the NA, I forgot, it was Dr. Schrader at the NIH. The best seat is the saddles that are shaped like this are bad for your sit bones because they come into the middle where the arteries and nerves are to the penis. So it's an erection issue.

The Peter Attia Drive
#351 ‒ Male fertility: optimizing reproductive health, diagnosing and treating infertility, and navigating testosterone replacement therapy | Paul Turek, M.D.

Those aren't good saddles. The saddles with the two little tongs that hold your iliac crest bones with no nose. Perfect. So it's pressure where the pressure is outside facing, leaning in. So we gave those to police in Washington, the bicycling police down in National Cathedral area in the parks. And they all gave the seats back a week later, said, you're not doing this. He said, what's going on?

The Peter Attia Drive
#351 ‒ Male fertility: optimizing reproductive health, diagnosing and treating infertility, and navigating testosterone replacement therapy | Paul Turek, M.D.

Those aren't good saddles. The saddles with the two little tongs that hold your iliac crest bones with no nose. Perfect. So it's pressure where the pressure is outside facing, leaning in. So we gave those to police in Washington, the bicycling police down in National Cathedral area in the parks. And they all gave the seats back a week later, said, you're not doing this. He said, what's going on?

The Peter Attia Drive
#351 ‒ Male fertility: optimizing reproductive health, diagnosing and treating infertility, and navigating testosterone replacement therapy | Paul Turek, M.D.

He said, we don't know where the seat is. We go sit down and it lands somewhere. You have to have the nose for bicyclists because they use it to guide when they sit down. They use it to guide where they sit. So The best saddle is flat or gel in the back, cut out in the middle and some kind of lean in like this. So cut out saddles and then you should get your bones fit. You can do this online.

The Peter Attia Drive
#351 ‒ Male fertility: optimizing reproductive health, diagnosing and treating infertility, and navigating testosterone replacement therapy | Paul Turek, M.D.

He said, we don't know where the seat is. We go sit down and it lands somewhere. You have to have the nose for bicyclists because they use it to guide when they sit down. They use it to guide where they sit. So The best saddle is flat or gel in the back, cut out in the middle and some kind of lean in like this. So cut out saddles and then you should get your bones fit. You can do this online.

The Peter Attia Drive
#351 ‒ Male fertility: optimizing reproductive health, diagnosing and treating infertility, and navigating testosterone replacement therapy | Paul Turek, M.D.

You can ask them to send you a pressure pad and you sit on it and then you send it back and they measure the distance. And there's only a couple of different saddles, maybe 12 widths that you could do and you get it done. Or like me, you use a saddle used for 30 years and it's perfect, but it weighs four pounds.

The Peter Attia Drive
#351 ‒ Male fertility: optimizing reproductive health, diagnosing and treating infertility, and navigating testosterone replacement therapy | Paul Turek, M.D.

You can ask them to send you a pressure pad and you sit on it and then you send it back and they measure the distance. And there's only a couple of different saddles, maybe 12 widths that you could do and you get it done. Or like me, you use a saddle used for 30 years and it's perfect, but it weighs four pounds.

The Peter Attia Drive
#351 ‒ Male fertility: optimizing reproductive health, diagnosing and treating infertility, and navigating testosterone replacement therapy | Paul Turek, M.D.

So fertility-wise, I'd say the government wants men. I'm going to talk about men to less than two glasses of alcohol a day is okay. They consider four binging. Now, alcohol is a small molecule, goes right into the brain, goes right into the testicle. It's definitely a poison. It goes everywhere. The testicle doesn't limit it. So I worry about it a lot.

The Peter Attia Drive
#351 ‒ Male fertility: optimizing reproductive health, diagnosing and treating infertility, and navigating testosterone replacement therapy | Paul Turek, M.D.

So fertility-wise, I'd say the government wants men. I'm going to talk about men to less than two glasses of alcohol a day is okay. They consider four binging. Now, alcohol is a small molecule, goes right into the brain, goes right into the testicle. It's definitely a poison. It goes everywhere. The testicle doesn't limit it. So I worry about it a lot.

The Peter Attia Drive
#351 ‒ Male fertility: optimizing reproductive health, diagnosing and treating infertility, and navigating testosterone replacement therapy | Paul Turek, M.D.

The effects I see are direct when it's abused. So I would say you see morphology, motility, and count issues. So that's a direct effect as a direct toxin. It's one of the few things that's into the testicle. Second would be a hormonal effect. So alcohol use tends to cause the liver to rev up, tends to cause more estrogenization. So you tend to get low testosterone from that.

The Peter Attia Drive
#351 ‒ Male fertility: optimizing reproductive health, diagnosing and treating infertility, and navigating testosterone replacement therapy | Paul Turek, M.D.

The effects I see are direct when it's abused. So I would say you see morphology, motility, and count issues. So that's a direct effect as a direct toxin. It's one of the few things that's into the testicle. Second would be a hormonal effect. So alcohol use tends to cause the liver to rev up, tends to cause more estrogenization. So you tend to get low testosterone from that.