OMITTED

What the news leaves out.

Debates · Fasting and longevity

Does deliberately reducing mTOR activity through drugs or diet improve human healthspan or longevity?

4 shows · 5 speakers · published Oct 7, 2026 · updated Oct 19, 2026

The debate

The dispute is whether deliberately lowering mTOR with drugs or diet slows human aging or instead harms healthspan and lifespan. Since late September, Jockers (Dr. Jockers Functional Nutrition) and Klickstein (The Peter Attia Drive) have argued that mTOR inhibition or cycling modestly promotes healthier aging. Over the same period, Lyon (unPAUSED with Dr. Mary Claire Haver) has argued that suppressing mTOR undermines muscle function and metabolism and does not extend life.

Where each side stands

mTOR inhibition or cycling via drugs/diet improves human healthspan and/or lifespan.

David Jockers (Dr. Jockers Functional Nutrition) · Dr. Will Cole (The Ultimate Human) · Lloyd Klickstein (The Peter Attia Drive) · Erica Kelly (unPAUSED with Dr. Mary Claire Haver)

Klickstein says mTOR inhibition is probably geroprotective in humans, but its effect size is likely modest, similar to preclinical results. Jockers claims that chronically elevated mTOR stops autophagy, causes overgrowth of damaged and senescent cells, and accelerates aging with inflammaging. Jockers argues that successful aging requires balancing mTOR-driven growth with autophagy, preserving muscle mass while clearing damaged proteins. Jockers and Cole point to ketogenic or fasting-mimicking diets and certain Mediterranean herbs as tools to lower mTOR and boost autophagy and mitophagy.

11 claims, in their words
  • “if we're consuming animal protein, or really any type of protein, could be plant protein as well, from the moment we wake up to the moment we go to bed. So if we're consuming protein all day long, and it's really long feeding window, We are overdriving pathways like the mTOR pathway that increases cell reproduction, and that increased cell”
    David Jockers · Dr. Jockers Functional Nutrition · 2025-10-30 · 23:49 nothing cited
  • “when mTOR is chronically elevated, it causes too much cell reproduction. It stops autophagy, and we get an overgrowth of cells with damaged proteins, senescent cells that aren't functioning well, and that accelerates the aging process, creates something called inflammaging”
    David Jockers · Dr. Jockers Functional Nutrition · 2026-05-07 · 07:27 nothing cited
  • “They are getting a lot of autophagy, but they're Also losing muscle mass. We want to do it in such a way that optimizes muscle mass, but also allows us to get rid of the damaged proteins through that process of autophagy, so we can really age successfully and thrive in life.”
    David Jockers · Dr. Jockers Functional Nutrition · 2026-05-07 · 18:51 nothing cited
  • “So really the key to longevity is not just suppressing mTOR, but it's cycling between proper amounts of mTOR and proper amounts of autophagy.”
    David Jockers · Dr. Jockers Functional Nutrition · 2026-05-07 · 18:27 nothing cited
  • “While we're fasting, we can use caffeine, for example, to stimulate or to, to further suppress mTOR. We can, you know, ideally, obviously fasting, you're using caffeine, doing it in the morning, not at night. And then we can also use some of these different polyphenols, these different herbs, right? We can do, whether it's green tea, or we can”
    David Jockers · Dr. Jockers Functional Nutrition · 2026-05-07 · 17:57 nothing cited
  • “mTOR is a master regulator of metabolism. It needs to be balanced with what we call autophagy, which is signaled by the AMPK pathway.”
    David Jockers · Dr. Jockers Functional Nutrition · 2026-05-07 · 06:28 nothing cited
  • “Ketogenic diet, fasting mimicking, actually fasting or fasting mimicking diets like the ketogenic diet, it's, it's lowering these pro-growth pathways like mTOR to increasing things like autophagy, which is cellular recycling, increasing mitophagy, mitochondrial autophagy.”
    Dr. Will Cole · The Ultimate Human · 2026-09-29 · 43:43 nothing cited
  • “These compounds The mTOR pathway, and they activate autophagy. They activate that AMPK path, means your body goes into cellular cleanup.”
    David Jockers · Dr. Jockers Functional Nutrition · 2026-10-16 · 19:34 nothing cited
  • “I think the effect size is going to be modest, is it just as it has been preclinically?”
    Lloyd Klickstein · The Peter Attia Drive · 2026-09-28 · 2:13:21 nothing cited
  • “I think it probably will. It's highly conserved biology across evolution, so I, I, I think so.”
    Lloyd Klickstein · The Peter Attia Drive · 2026-09-28 · 2:12:52 nothing cited
  • “I currently am using a product very first thing after I cleanse called ReQ. This is a brand new thing. I, I don't even have much evidence. I don't, I don't have any of the white papers yet, but the way they market themselves is as a, a skin longevity topical, and it works somehow on the mTOR pathway, kind”
    Erica Kelly · unPAUSED with Dr. Mary Claire Haver · 2026-10-02 · 09:53 nothing cited

mTOR suppression does not improve, and may harm, human healthspan or lifespan.

Gabrielle Lyon (unPAUSED with Dr. Mary Claire Haver)

Lyon argues that mTOR is necessary for muscle protein synthesis and is stimulated by resistance training and protein intake, so suppressing it for longevity rests on a flawed premise. Lyon states that chronic mTOR suppression leads to glucose intolerance and changes in lipid profiles. Lyon adds that long-term mTOR suppression induces insulin resistance and weakens the immune system.

2 claims, in their words
  • “the whole premise that mTOR suppression is going to help with longevity, they've never worked in a nursing home. mTOR is necessary, this idea that we're going to suppress this one pathway, and that that is what's going to make us live longer, is foolish. It is the same pathway that is stimulated with resistance training. By default, if you”
    Gabrielle Lyon · unPAUSED with Dr. Mary Claire Haver · 2026-09-25 · 56:42 nothing cited
  • “when you chronically suppress mTOR, which again, there's a ton of different, a ton of problems with even the framework of this, is you also affect glucose. You become glucose intolerant. You change your lipid profile. There's all these whole hosts of other problems with it. So it's not just muscle. Insulin resistance, weakened immune system.”
    Gabrielle Lyon · unPAUSED with Dr. Mary Claire Haver · 2026-09-25 · 54:49 nothing cited
What each side never hears

Listeners of “mTOR suppression does not improve, and may harm, human healthspan or lifespan.” have not heard (5 arguments)

Listeners of these shows have not heard Jockers's claim that eating protein across a long daily feeding window overdrives mTOR and increases senescent and dysfunctional cells. Jockers also states that chronically elevated mTOR halts autophagy, allowing damaged and senescent cells to accumulate and speed aging and inflammaging. Jockers argues that cycling between periods of higher mTOR and higher autophagy, rather than constant suppression, is the key pattern for longevity. Klickstein claims that because mTOR biology is conserved across evolution, mTOR inhibition is probably geroprotective in humans.

5 unanswered arguments, in their words
  • “They are getting a lot of autophagy, but they're Also losing muscle mass. We want to do it in such a way that optimizes muscle mass, but also allows us to get rid of the damaged proteins through that process of autophagy, so we can really age successfully and thrive in life.”
    David Jockers · Dr. Jockers Functional Nutrition · 2026-05-07 · unanswered for 23 weeks
  • “if we're consuming animal protein, or really any type of protein, could be plant protein as well, from the moment we wake up to the moment we go to bed. So if we're consuming protein all day long, and it's really long feeding window, We are overdriving pathways like the mTOR pathway that increases cell reproduction, and that increased cell”
    David Jockers · Dr. Jockers Functional Nutrition · 2025-10-30 · unanswered for 50 weeks
  • “I think it probably will. It's highly conserved biology across evolution, so I, I, I think so.”
    Lloyd Klickstein · The Peter Attia Drive · 2026-09-28 · unanswered for 3 weeks
  • “So really the key to longevity is not just suppressing mTOR, but it's cycling between proper amounts of mTOR and proper amounts of autophagy.”
    David Jockers · Dr. Jockers Functional Nutrition · 2026-05-07 · unanswered for 23 weeks
  • “when mTOR is chronically elevated, it causes too much cell reproduction. It stops autophagy, and we get an overgrowth of cells with damaged proteins, senescent cells that aren't functioning well, and that accelerates the aging process, creates something called inflammaging”
    David Jockers · Dr. Jockers Functional Nutrition · 2026-05-07 · unanswered for 23 weeks

Listeners of “mTOR inhibition or cycling via drugs/diet improves human healthspan and/or lifespan.” have not heard (2 arguments)

Listeners of these shows have not heard Lyon's point that mTOR is necessary for muscle protein synthesis and is stimulated by resistance training and protein intake. Lyon also argues that chronic mTOR suppression causes glucose intolerance and altered lipid profiles. Lyon further claims that sustained mTOR suppression promotes insulin resistance and weakens immune function.

2 unanswered arguments, in their words
  • “the whole premise that mTOR suppression is going to help with longevity, they've never worked in a nursing home. mTOR is necessary, this idea that we're going to suppress this one pathway, and that that is what's going to make us live longer, is foolish. It is the same pathway that is stimulated with resistance training. By default, if you”
    Gabrielle Lyon · unPAUSED with Dr. Mary Claire Haver · 2026-09-25 · unanswered for 3 weeks
  • “when you chronically suppress mTOR, which again, there's a ton of different, a ton of problems with even the framework of this, is you also affect glucose. You become glucose intolerant. You change your lipid profile. There's all these whole hosts of other problems with it. So it's not just muscle. Insulin resistance, weakened immune system.”
    Gabrielle Lyon · unPAUSED with Dr. Mary Claire Haver · 2026-09-25 · unanswered for 3 weeks
Bottom line

Position 0 leans on claims that chronic mTOR elevation drives aging and conserved biology makes inhibition geroprotective, points Lyon's metabolic critiques do not address. Position 1 stresses metabolic and immune harms from chronic mTOR suppression and does not address the idea of alternating mTOR activation with autophagy.

What changed

Published because: 4 shows, 2 positions, 351 days of debate. Questions publish only when claims come from at least three shows, at least two positions are held by different people, and the debate has lasted two weeks.

Pairs are matched by content across different episodes and shows; no exchange between these speakers took place unless both quotes come from the same episode.

The prose on this page is written by a model from the quotes shown, and every sentence of it rests on quotes you can open; sentences that could not be traced to a quote were removed before publishing. Positions are placed from each speaker's own words. Evidence labels say what the speaker cited, never whether it is true.

7 episodes behind this page

The week's bottom lines, in your inbox

One email a week: the stories that mattered and what they actually mean. Free.