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Summary
On episode 469 of 40+ Fitness, Coach Allan sits down with Gary Taubes, an award-winning investigative science and health journalist and co-founder of the nonprofit Nutrition Science Initiative, author of Why We Get Fat and What to Do About It, Good Calories, Bad Calories, and The Case Against Sugar.
Gary makes the case that obesity has never been simply about eating too much. He argues it is a hormonal regulatory disorder driven by insulin, and that the “eat less, move more” advice that has dominated nutrition guidance for 80 to 90 years was built on flawed 1930s research that buried an earlier, more accurate hormonal theory.
The conversation covers why hunger is a response to the body’s needs rather than a cause of weight gain, why some people “fatten easily” no matter how little they eat, and how a ketogenic diet works by minimizing insulin so the body can release and burn stored fat.
Links
- https://garytaubes.com
- https://twitter.com/garytaubes
- Episode 224 – The worst part of a western diet – Gary Taubes
- Episode 628 – Understanding the science and politics of diabetes treatment with Gary Taubes
Key Takeaways
- Obesity is a hormonal disorder, not simply overeating. By the mid-1960s, metabolism researchers had established that insulin dominates fat storage, echoing what German and Austrian clinicians argued decades earlier. That evidence was largely ignored after World War II in favor of a simpler “fat people eat too much” energy-balance story.
- Hunger is a response to the body’s state, not a cause of weight gain. Just as a growing child is hungry because it’s growing, not the other way around, a body that is storing fat efficiently will feel hungry because of that process. Ancel Keys’ famous semi-starvation experiment showed lean men fed 1,600 calories a day became obsessed with food and later overate once refed, proof that “just eat less” fails even in naturally lean people.
- Some people “fatten easily,” and that is not a willpower problem. Gary illustrates this with his own life: he and his taller brother ate the same way, but Gary went from 195 to 240 pounds while his brother never budged. Lean people giving diet advice often don’t understand what it’s like for a body that stores fat no matter what.
- Insulin, not calorie counting, is the lever that matters. Fat cells are “exquisitely sensitive to insulin,” so even small amounts block the release of stored fat. Carbohydrates are the primary driver of insulin, which is why cutting them, rather than cutting calories generally, is the mechanism behind a ketogenic diet’s effect on fat loss.
- A practical ketogenic diet is not “the bacon diet.” It replaces starches, grains, and sugar with green leafy vegetables plus meat, fish, fowl, eggs, and dairy fat. Gary describes simply swapping fries or a baked potato for extra broccoli or salad at restaurants, meaning most people end up eating more vegetables than before, not fewer.
- Much of nutrition research testing low-carb diets is poorly designed. Studies often test whether people can be told to follow a diet rather than what happens when the diet is actually sustained, then blame poor results on the diet being “unsustainable” instead of on the weak study design.
- Run your own experiment. Gary encourages people who are skeptical of keto to treat it as an n-of-1 experiment: eliminate sugar, starches, and grains for a defined period and observe how your own body responds, rather than accepting one-size-fits-all dietary guidance.
- Gary’s three strategies to get and stay well: don’t eat sugar, starches, and grains; wear a mask; and fix the underlying fat-accumulation problem through diet first, because a body with restored energy will naturally want to move, walk, and exercise rather than being forced into it.
“It’s unlearning a lot of the simplistic crap we were taught.”
Gary Taubes
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Episode 497 – How to reach your peak after 40 with Dr. Marc Bubbs