Interview with Dr. Jack Kruse: Neurosurgeon, Cold Thermogenesis, and Leptin Reset

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Buckle up, ladies and gentlemen... here is the much-anticipated interview with Dr. Jack Kruse: neurosurgeon, epic biohacker, cold thermogenesis guru, weight loss success story, and (in)famous Paleo rockstar. Unless you've been... living in a cave. you've noticed that Dr. Jack has recently ruffled some feathers and caused a powow in the Paleosphere.
Wait, what does a neurosurgeon have to do with knuckle-dragging cavemen?
For the edification of those of you who don't know him, Dr. Jack Kruse has a pretty cool story. Yes, he is a board-certified neurosurgeon -- a rockstar when it comes being fist-deep in brains -- who practices in Nashville, Tennessee. But he's no normal doc. He gave up his post as a top neurosurgeon because he decided his profession -- and he -- wasn't doing the job. Several years ago, pushing 350 pounds, his own health was in question. As he says in the podcast:
"I was no good example for my patients. All you had to do was look at me -- I was a complete fatass. And I said, you know, In order for me to change the culture of medicine, I have to first change the culture of Jack Kruse. And that's what I did: I changed me. I became the change I wanted to see in my profession."


So he left his post to start his own practice and promptly biohacked himself with leptin and cold thermogenesis to lose over 150 pounds without exercise. He decided to launch a blog to disseminate his theories and protocols, which in only 8 months has soared to being one of the top 100,000 in the world. He even snuck past Dave Asprey at BulletProofExec.com. And that guy practically invented the internet.

Jack does extreme biohacks... He has been known to write blog posts outside in below-freezing temperatures buck naked, inject himself with staph infections, and pack himself in ice for hours. This is not a normal man. And that's one of the things I like about him. I even heard him sloshing around in the background during the interview. I don't want to know what was going on the other end, although I'm guessing nakedness, an icy bathtub, and shrinkage might have been involved.

Hanging out with Jack before and after our panel at PaleoFX, it's clear that he truly cares. Jack answers every question and comment on his blog. For a busybodied brain surgeon running his own practice, that's very cool. Some of his posts have over 1300 comments from loyal fans and rabid critics.
But, as Jack says on my show, "I'm not in this for anybody to like me. I'm in it because I want to save your life and I want to make your life better. I'm just asking you to think."

There's an unsettling trend that's been gathering steam in the past few months in the Paleosphere. People are hating on each other and Jack Kruse is currently in the crosshairs. Now, I don't spend much time on Paleohacks or commenting on other blogs (with the exception of Mark's Daily Apple; I believe that Mark fosters spirited discussions in a very positive environment), but I do read them. And lately I've been shocked by the petty bickering, one-upsmanship, and mind-numbing negativity.

If you know Jack, you know that he's holding back... again. He gave me a taste of what he means by "Factor X," and it definitely incited some healthy cogitation. It's not something that a whole lot of people are thinking about yet. I believe it will add an important lens to this movement. You'll see.
Alright, here comes the show. I pick Jack's brain about:
Why cold thermogenesis and the leptin protocol enables miraculous fat loss (Jack lost 77 lbs. in 3 months and 140 lbs. in 11 months without exercise)
How harnessing the cold pathway can help you sleep like a rockstar, lose weight, and increase your lifespan
What Lance Armstrong, Michael Phelps, astronauts, and Sherpas have in common
The biological and evolutionary basis of the cold pathway (geek alert)
Why it's important that the much-awaited "Factor X" is linked to the cold
Why being directionally accurate is more important than being perfect when it comes to making progress
Jack is a wealth of information about evolutionary theory, the brain, and fine wines.