Wendy Zuckerman

And the vast majority of those studies actually come from one particular lab.

It's the lab that first discovered the peptide in Croatia.

It's the same lab that's linked to that study in people, the clinical trial from 2015, that never published those results.

But for three decades, what this lab has published are scores of studies where they'll get a rat, cut its quadricep or ligament, slice its cornea, damage its nerve.

You get the picture.

And then they give one group of rats a placebo while the other gets BPC-157.

And over and over and over again, the team finds that the rats injected with BPC-157 do better.

I called up the professor that heads up that lab.

but he wouldn't go on the record to talk.

And once I started asking, why didn't he publish that clinical trial from 2015, he ghosted me completely.

And like I mentioned, there are other peptides out there that are supposed to help you hulk up and recover faster.

But a review paper looking into some of the most popular ones basically concluded there's pretty much no evidence in humans for this.

I spoke to one of the authors of that paper, Dr. Corey Mayfield, a resident at Keck School of Medicine, USC.

So here's where we're at.

Online, you are going to read and see these amazing stories of people juicing up with peptides and feeling so great and healing so quickly and popping with muscles.

But if you are looking for scientific evidence that peptides are doing that magic and not the placebo or something else, you are going to be bitterly disappointed.

As I kind of was.

But this takes us to the last question of the episode.

What are the risks?

If you've got a knee injury that just won't heal or you want to build extra muscle fast and you want to give this stuff a go,