Kristen Fortney

Co-Founder & CEO, BioAge Labs · 3 appearances on the record.

computed by AI from the episodes · how this works → · full disclaimer →

founderexecutivescientist@kpfortney ↗LinkedIn ↗bioagelabs.com ↗

Kristen Fortney is the co-founder and CEO of BioAge Labs, a biotechnology company developing therapies targeting the molecular mechanisms of aging. She previously conducted postdoctoral research at Stanford University studying bioinformatics and the genetics of human longevity.

28statements → 22claims → 19claims resolved → 63%fully supported → 3.93/5average certainty → 1.93/5average debate potential →

12 supported 5 partly supported 2 contradicted 3 not checkable as stated how the 22 claims stand · each chip opens the sources

3 predictions · 19 assertions · 2 opinions · 2 insights · 1 disclosure · 1 what if · every statement was checked. The predictions and assertions are the 22 claims: statements the public record can support or contradict. 19 are resolved, and 3 name no date, number or outcome precise enough to check. Everything else (opinions, insights, what ifs, disclosures) can never be settled by the record, so it carries no assessment.

The record, in short

What the tape says about how Kristen argues and how the claims held up. Everything they said, and everything said about them, is in the tabs below.

Their most notable supported claim

Assertion Supported
Fortney: Clearing senescent cells in mice boosted lifespan by 30 percent
“And they showed that if you killed senescent cells in a mouse, you could boost lifespan by 30%.”
Kristen Fortney Jan 2, 2019 ▶ 9:24 a16z Podcast | The Science Of Extending Life

Their most notable contradicted claim

Prediction Didn’t hold up
Fortney: Small molecule longevity drugs will likely emerge first
“I guess I'm expecting small molecules to come first because that's what pharma is used to. You know, that's what the, we have all the models to make that work. And the space of chemicals has been so unexplored. So I think there are going to be other repomycins…”
Kristen Fortney Jan 2, 2019 ▶ 24:19 a16z Podcast | The Science Of Extending Life

Expressed certainty vs assessment result

none yet certainty 1
none yet certainty 2
0% certainty 3
87% certainty 4
50% certainty 5

weighted support: a fully supported claim counts one, a partly supported claim counts half. Each filled bar is clickable and opens exactly those claims; "none yet" means nothing said at that certainty level has resolved yet

How they sound: speaking style how? →

287 words/min while actually speaking · 13.6 um and uh per 1k words

No argument clarity score for Kristen Fortney: no usable question→answer exchanges on raw tape (a fair score needs 8+). We do not score a sample that small. Roundtable and news formats yield far fewer direct exchanges than interviews.

Measured by listening to the audio itself: 4,059 words across 2 episodes of raw-level tape, transcribed verbatim with every um and uh kept, each one attributed only where the alignment onto our timed stream is unambiguous. These are measurements of speaking style. We do not rank them: across this corpus, fluency and argument quality are nearly uncorrelated (ρ≈0.2), and smooth talking does not signal clear thinking. How it's measured →

Everything Kristen Fortney said on the a16z Podcast that made the record, most notable first. Filter by type, assessment or year in the ledger →

Prediction Not checkable as stated
Fortney: Near-term therapies will add 10 to 20 years to human life
“I think the near-term therapies are going to add, say, 10 to 20 years.”
Kristen Fortney Jan 2, 2019 ▶ 28:05 a16z Podcast | The Science Of Extending Life
What-if
Targeting aging directly could extend average human lifespan to 113 years
“That would get the average lifespan up to 113 by targeting aging directly rather than targeting individual diseases one at a time. And what's really key too is this would be an additional 30 years of healthy life.”
Kristen Fortney Dec 23, 2018 ▶ 1:10 Extending Human Lifespan
Prediction Not checkable as stated
Current longevity clinical trials could add 10 to 20 healthy years
“Three different therapies are already in the clinic today. So as I mentioned, there are drugs targeting senescence, metformin, and there are drugs targeting rapamycin being tested in clinical trials now. And I think that could already add 10 to 20 years of hea…”
Kristen Fortney Dec 23, 2018 ▶ 10:28 Extending Human Lifespan
Assertion Not checkable as stated
Kristen Fortney argues there is no hard biological limit on lifespan
“Going forward in the future, I think it's a really important point to mention that there is no hard biological limit on how long we can live, and these are a couple really fascinating examples. Bowhead whales, their average lifespan is over 200 years, so they'…”
Kristen Fortney Dec 23, 2018 ▶ 10:44 Extending Human Lifespan
Assertion Supported
Fortney: Clearing senescent cells in mice boosted lifespan by 30 percent
“And they showed that if you killed senescent cells in a mouse, you could boost lifespan by 30%.”
Kristen Fortney Jan 2, 2019 ▶ 9:24 a16z Podcast | The Science Of Extending Life
Assertion Supported
Fortney: NIA tested 30 lifespan drugs compared to 110,000 for cancer
“The National Cancer Institute, the total number of drugs they've given to mice to see if they cure mouse cancer is over a 110,000. The number of drugs that the National Institute on Aging has given to mice to see if they live longer is 30.”
Kristen Fortney Jan 2, 2019 ▶ 13:21 a16z Podcast | The Science Of Extending Life
Opinion
Fortney: Statins function as anti-aging drugs in current medical practice
“Statins, which basically are an aging drug now. The indication is, oh, you're over 40, have some statins.”
Kristen Fortney Jan 2, 2019 ▶ 20:49 a16z Podcast | The Science Of Extending Life
Insight
Fortney: Longevity startups should target small initial indications to avoid huge trials
“Even if we came up with a drug that we thought slowed aging tomorrow, and I thought it would be wonderful for diabetes, I probably wouldn't want to go out and pay for a diabetes trial, right? That's a very competitive space. You need a huge, expensive trial wi…”
Kristen Fortney Jan 2, 2019 ▶ 21:56 a16z Podcast | The Science Of Extending Life
Prediction Didn’t hold up
Fortney: Small molecule longevity drugs will likely emerge first
“I guess I'm expecting small molecules to come first because that's what pharma is used to. You know, that's what the, we have all the models to make that work. And the space of chemicals has been so unexplored. So I think there are going to be other repomycins…”
Kristen Fortney Jan 2, 2019 ▶ 24:19 a16z Podcast | The Science Of Extending Life
Opinion
Extending lifespan is the most powerful way to address chronic disease
“So I work on extending human lifespans because I believe this is the most powerful way to address chronic disease.”
Kristen Fortney Dec 23, 2018 ▶ 0:06 Extending Human Lifespan
Assertion Partly supported
Curing all cancer would only add four years to average female lifespan
“And scientists have estimated that if we could cure all cancer, that would only get her up to 85. That would add only four years to the average lifespan.”
Kristen Fortney Dec 23, 2018 ▶ 0:42 Extending Human Lifespan
Assertion Supported
Phase IIb trial shows rapamycin reduces elderly respiratory infections by 30%
“And they just published their Phase IIb data this summer, showing that Rapamycin can improve certain aspects of immunosenescence. So as you get older, your immune system doesn't work quite so well, and people who took rapamycin had 30% fewer respiratory infect…”
Kristen Fortney Dec 23, 2018 ▶ 4:46 Extending Human Lifespan
Assertion Supported
Deleting senescent cells can boost animal lifespan by up to 30%
“If you could delete these cells, that could boost lifespan as much as 30%, ah, and healthspan as well.”
Kristen Fortney Dec 23, 2018 ▶ 5:41 Extending Human Lifespan
Assertion Supported
BioAge identified a blood protein linked to longer human lifespan
“One of the targets we're working on now is a protein that circulates in your blood, and we discovered that humans who have higher levels of this protein live longer, are less frail, and are protected from disease.”
Kristen Fortney Dec 23, 2018 ▶ 8:06 Extending Human Lifespan
Insight
Fortney: A real biomarker must predict future health outcomes
“A real biomarker has to predict the future.”
Kristen Fortney Jan 2, 2019 ▶ 2:25 a16z Podcast | How to Live Longer and Better
Disclosure
Fortney: All BioAge discoveries stem from decades-old biobank samples
“So we can take these samples that are 20 years old, and we can query them with all the modern technologies that measure hundreds of thousands of variables, and then integrate that with our electronic health records to try to predict their future health course,…”
Kristen Fortney Jan 2, 2019 ▶ 3:28 a16z Podcast | How to Live Longer and Better
Assertion Supported
Fortney: Rapamycin extended middle-aged mouse lifespan by 30 percent
“Even though they've only tested 30, there's already been one success rapamycin that came out of that, which is a very exciting discovery. Basically, the first molecule that came out of this large-scale program, they started to feed it to mice at middle age, an…”
Kristen Fortney Jan 2, 2019 ▶ 13:33 a16z Podcast | The Science Of Extending Life
Assertion Supported
Fortney: Exceptional human longevity is a heritable genetic trait
“There are groups of people now who have exceptional longevity, which is a heritable genetic trait.”
Kristen Fortney Jan 2, 2019 ▶ 28:08 a16z Podcast | The Science Of Extending Life
Assertion Supported
Age is the primary underlying risk factor for heart disease and cancer
“Now, these are fundamentally very different diseases, different symptoms, different progressions, but they share the same underlying driving risk factor, which is how old you are.”
Kristen Fortney Dec 23, 2018 ▶ 0:18 Extending Human Lifespan
Assertion Partly supported
Average US healthspan is only 62 before first chronic age-related disease
“The average healthspan is only 62, and that's the age at which you get your first chronic age-related disease.”
Kristen Fortney Dec 23, 2018 ▶ 1:33 Extending Human Lifespan
Assertion Supported
Only 1% of the $37B NIH budget funds basic aging research
“So in particular, the NIH, which is sort of all the spending on, on research, on medical research, only about one percent of their thirty seven billion dollar annual budget goes to research on basic mechanisms of aging.”
Kristen Fortney Dec 23, 2018 ▶ 2:04 Extending Human Lifespan
Assertion Supported
Retrospective study shows diabetics taking metformin have lower cancer rates
“So metformin is a first-line therapy for diabetes. Millions of people have been taking it for decades, and there was a paper that came out a few years ago where they looked retrospectively and saw that, hey, those diabetics that were taking metformin for decad…”
Kristen Fortney Dec 23, 2018 ▶ 9:52 Extending Human Lifespan
Assertion Contradicted
Fortney: Three-quarters of healthcare costs fund chronic elderly care
“Well, frankly, right now, three quarters of annual health care costs go towards chronic diseases in the elderly, and that's adding, those are years of sick life.”
Kristen Fortney Jan 2, 2019 ▶ 11:40 a16z Podcast | How to Live Longer and Better
Assertion Supported
Biological interventions can reproducibly extend mouse lifespans by up to 30%
“So we can make mice live about 20 to 30% longer.”
Kristen Fortney Dec 23, 2018 ▶ 1:02 Extending Human Lifespan

Show 4statements(4 left)

Appearances (3)

EpisodeDateSpeaking time
a16z Podcast | How to Live Longer and Better Jan 2, 2019 2m
a16z Podcast | The Science Of Extending Life Jan 2, 2019 7m
Extending Human Lifespan Dec 23, 2018 9m
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