By playing, you agree to uListen's Terms and Privacy Policy and YouTube's Terms of Service.
Peter Attia MD#148 - Richard Miller, M.D., Ph.D.: The gold standard for testing longevity drugs: the ITP
Summaries, chapters, transcripts, and FAQs on this page are made by uListen, not YouTube.
At a glance
WHAT IT’S REALLY ABOUT
Richard Miller on the ITP: Which Drugs Truly Extend Mouse Lifespan
- Miller explains that the ITP runs in parallel at three sites using large numbers of genetically heterogeneous mice, giving statistically powerful and reproducible tests of whether a drug extends lifespan.
- Rapamycin, acarbose, 17α-estradiol and canagliflozin extended lifespan, and several of them worked even when started in middle age, which Miller says overturned his own expectation that interventions must start young.
- Many results were sex-specific: 17α-estradiol, canagliflozin, acarbose and NDGA mainly helped males, while rapamycin stood out for its strong effect in both sexes.
- Resveratrol, metformin, nicotinamide riboside, aspirin at higher doses, green tea extract and others failed to extend lifespan in the ITP, which Miller treats as valuable findings that temper popular hype.
- Miller argues the field should ask what can slow aging as a whole rather than what causes it, and he criticizes the Hayflick-limit and telomere frameworks as poor proxies for aging.
IDEAS WORTH REMEMBERING
5 ideasAging can be slowed by drugs in food
Miller's first takeaway is that ITP results show a dietary drug can extend healthy lifespan by an amount he calls ten times better than curing cancer, which should reorient medical research toward drugs that slow aging.
The ITP is built for reliability
It uses about 50 males and 50 females per drug at each of three sites, doubled controls, and genetically heterogeneous Het3 mice, so that results are powerful and reproducible rather than artifacts of one lab or one inbred strain.
Interventions can work when started in middle age
Rapamycin started at 20 months worked about as well as an early start, 17α-estradiol worked similarly when started late, and acarbose worked about half as well, which Miller says contradicted his own prediction.
Effects are often sex-specific
Miller notes that 17α-estradiol, canagliflozin and acarbose mainly help males, while rapamycin and glycine work in both sexes, and he calls understanding why an important research question.
Blunting glucose peaks may matter
Acarbose and canagliflozin both extend male lifespan and block peak glucose without lowering hemoglobin A1C in mice, though Miller cautions that canagliflozin may act through mechanisms other than glucose.
WORDS WORTH SAVING
5 quotesI don't really care what causes aging. What I care about is what is the process that can postpone all the different aspects of aging.
— Dr. Richard Miller
You've got to be at least three times better than a complete conquest of cancer.
— Dr. Richard Miller
I bet that it was a waste of time and money to give rapamycin to 20-month-old mice, to middle-aged mice. I said, "This can't possibly work." And they were right, of course, and I was completely wrong, and that's a big surprise.
— Dr. Richard Miller
The first point I'd make is the one we began at the beginning of this conversation, which is that, by gosh, you actually can put something in the food that extends healthy lifespan, and it's an enormous effect, ten times better than a cure for cancer.
— Dr. Richard Miller
If you don't ask the right question, you are guaranteed to flail. You know, you might get lucky, but you're, you're gonna flail.
— Dr. Peter Attia
High quality AI-generated summary created from speaker-labeled transcript.
