Higher vs Lower Metabolism

Do you think there is anything valuable to learn from these different approaches?

See full commentary here: https://x.com/johnsonmxe/status/1879362451067859300

Scientific evidence definitely support Bryan Johnson’s approach (caloric restriction, etc). And he shares a lot more biomarker data. However, I wonder if a higher metabolism might also offer benefits—particularly if achieved through healthier methods than those mentioned in the article (e.g., avoiding saturated fats).

What does everyone think?

That post covers many areas… and it’s complex, so this could be a very long discussion.

My take is that you want to first look at the major reasons people die prematurely - then work back from that…

What Are the 10 Leading Causes of Death in the United States?

  • Heart disease.
  • Cancer.
  • COVID-19.
  • Accidents.
  • Stroke.
  • Chronic lower respiratory diseases.
  • Alzheimer’s disease.
  • Diabetes.

Source: 10 Leading Causes of Death in the United States

With that as a backdrop (the most likely things to kill you), then look at the the link you posted. More calories and nutrition mean higher activation of mTORC1… and we know that results in shorter lifespans (because rapamycin blocks mTORC1 and increases lifespan in every organism tested by about 15% to 30%.

But - as you suggested, there are also benefits to higher metabolism - better muscle growth and tissue regeneration, healing, growth, etc. So mTORC1 activation is absolutely helpful in many cases.

So - you need both for a good life. The key is to modulate it in a way that optimizes your health and longevity over the long term. The issue is that as you get older mTORC1 tends to get stuck on “active” mode, and we know that is bad, it accelerates aging. So the older you get the more you would likely benefit from periodic mTORC decreases (i.e. less food periodically, less energy, less mTORC stimulation.

On their different approach to Lipids - you’re such more likely to die of heart attack / cardio vascular disease before cardiolipin issues - so I stick with a low LDL-C / APOB approach and generally keep saturated fats low.

I also threw that text from the X post you linked to into Gemini Pro, Deep Search with the following prompt:

Using the best scientific and clinical research, Critique the two different approaches, beliefs and statements by Bryan Johnson and Ray Peat as outlined in the following text: (your X link)

Response:

The Dialectics of Bioenergetics: A Comprehensive Scientific Critique of the Johnson-Peat Dichotomy in Human Longevity and Metabolism

1.4 Conclusion on Metabolism

The dichotomy is between minimizing damage (Johnson) versus maximizing repair (Peat). Current evidence suggests that while CR reliably extends maximum lifespan in short-lived species (low entropy systems), its effect on humans is likely more impactful on healthspan(delaying the onset of metabolic disease) rather than radically extending maximum lifespan.Peat’s high-metabolic approach carries the risk of accelerating aging if the uncoupling mechanism fails or if nutrient overload occurs, leading to hyperinsulinemia rather than thermogenesis. However, it offers a compelling model for “functional aging,” preserving muscle mass, libido, and cognitive speed, which are often compromised in deep CR states.

You might be interested in the full evaluation here: https://gemini.google.com/share/426cafd9dbbd

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Ray Peat was a very nice and selfless gentleman in my opinion. I communicated with via email several times over the years before he passed away. Contrary to his own wishes other people made him into somewhat of an influencer by grifting off his ideas.

If rumors are correct he passed away from a stroke although I’m not sure of what type and if this has been confirmed. He promoted things like salt, saturated fat over pufa and high doses of aspirin fwiw. Although he was very intelligent and well meaning I think he was mostly incorrect on several things related to health-like estrogen for example. I don’t have a PhD or MD degree so that’s just my humble opinion.

He will always hold a special place in my heart as an example of how to treat others. With that said his metabolism ideas didn’t seem to pan out for many people especially the middle aged and older crowd who often just got fat and sick in the process of trying to implement the lifestyle strategies attributed to him.

The sad thing is that he was misrepresented in many ways while he was alive and now that he is gone people are still trying to make money off the thoughts he shared in newsletters and interviews.

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I’ve checked out both BJ and RP over the years. BJ uses thyroid, and RP also likes (and probably uses) thyroid.
I think BJ has a more scientific approach than RP.
RP never posted blood work or imaging scans like BJ does. Had RP done so, he might have been able to still be alive. That’s if he had cardiovascular disease.
Both BJ and RP sell things such as supplements, newsletters, coaching, books etc.

It seems a lot of the RP influencers are somewhat overweight also, and hold some ideas that one can eat excess calories (or without counting) and still lose weight through a higher metabolism.
Even RP has said he lost weight using coconut oil to boost metabolism and lose weight.
But has never done any actual studies in a private lab to prove this.

-gives drug like effects (exercise) to consuming coconut oil.
-was losing 1lb per week.
-adds 100-200 cals of coconut oil a day over “several weeks” and lost 10-12 pounds.

People who take thyroid, they can still put on weight if they over eat.
BJ has a high metabolism, but is very precise with calories in vs calories out.

For some people having a higher metabolism can cause a decreased appetite, and boost catecholamines. Less calories in per day than maintenance calories = weight loss over time.

I think one of the best person out there to learn about metabolism is Lyle McDonald. He has many videos out and books as well. Been in the bodybuilding arena for decades.
All the top fitness and bodybuilding coaches are great but cost a lot of $. They know all about the foods, drugs, and other stuff to get a certain look, performance, or perhaps general health.

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I second that. I’ve read a ton about fitness and metabolism in the past and if there is anyone I trust in that area it’s Lyle McDonald.

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