Your blood sugar can look perfectly normal for up to 14 years while insulin resistance quietly builds underneath.

Dave Asprey and I get into why most doctors never test for it, why the restaurant "tallow fries" you ordered may not be what you think, and what happened to my cholesterol, gut bacteria, and inflammation markers after 90 straight days of carnivore.

93% of Americans are metabolically unhealthy. In 2018, that number was 88%. It's getting worse, not better.

And most people won't find out until years after the damage starts, because the test that could catch it early usually isn't ordered.

There's no medication for high insulin, so why check?

In this conversation, Dave Asprey and I go after the things that keep people stuck as sugar burners: high insulin, seed oils hiding in "healthy" menu items, oxalates in so-called superfoods, and the idea that your metabolism slows down just because you got older.

Spoiler: a 6,800-person study says otherwise.

What if your labs look fine and you're still years into a metabolic problem?

In this episode, I sit down with biohacker Dave Asprey to talk about why so many people are stuck burning sugar, and what it takes to get your metabolic flexibility back.

We start with insulin, the marker most doctors skip, and why a fasting insulin over 6 may be a warning sign even when your glucose and A1C look normal.

Dave and I also break down why high insulin, not salt, may be what's pushing your blood pressure up.

From there, we get into seed oils and why "high smoke point" doesn't mean what most people think. A study on cooking oils found that the oils with the highest smoke points produced the most harmful polar compounds, while one oil most people are told not to cook with produced the least.

Dave and I don't fully agree on this one, and that's part of the fun.

I also share the results of my 90-day carnivore experiment, including full blood work, stool tests, and a review from a heart surgeon.

My total cholesterol went from 300 to 450. What the rest of my markers showed may surprise you. Dave shares his own carnivore experiment, which went very differently, and we talk about where the upper limit should be.

Plus: how Dave gave himself gout in three days, why almond flour gave me recurring styes, the right way to think about gut diversity, and why your metabolism isn't fast or slow, it's efficient or inefficient.

If you care about insulin resistance, seed oils, keto, carnivore, fasting, gut health, or longevity, this one's for you.

About Dave Asprey

Dave Asprey is a biohacker, entrepreneur, and host of The Human Upgrade podcast.

He founded Bulletproof and wrote The Bulletproof Diet, one of the first major books to bring intermittent fasting and keto to a mainstream audience. He's also the author of Heavily Meditated and the founder of Danger Coffee, and he's involved with Upgrade Labs.

After losing 50 pounds in three months on keto, Dave spent the next decade experimenting to lose the last 50. That journey shaped his data-driven approach to metabolic flexibility, longevity, and biohacking.

Health Disclaimer

This podcast is for educational purposes only and is not medical advice. Always consult a qualified healthcare professional before making changes to your diet, exercise, supplements, or health routine.

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