Stephen Kritchevsky

I am an epidemiologist and gerontologist studying functional trajectories of older adults with a special emphasis on nutritional factors.

[Research Centers Collaborative Network (RCCN) @rccnaging]

The 2027 Artificial Intelligence and Technology Collaboratories (AITC) Annual National Research Award Competition funds aging and dementia research that implements AI and technology to improve the health and well-being of older adults. Read the RFA: https://t.co/B5b8YCsTSo

[GeriPal - A Geriatrics & Palliative Care Podcast @GeriPalBlog]

Can we prevent #CognitiveDecline? Researchers Laura Baker & @EFBinderSTL join us to discuss multi-domain lifestyle trials (FINGER, US POINTER, rrAD) & how combined interventions can slow the aging brain by 1–2 years. #hpm

-> https://t.co/EbOqea39dU
Hosts @AlexSmithMD | @EWidera

[Research Centers Collaborative Network (RCCN) @rccnaging]

There's still time to register for this afternoon's webinar "Connections between Aging, Older Adults, and the Environment," featuring a discussion on the connections between extreme weather and disasters, health, and aging: https://t.co/pILSxfnD15

[Research Centers Collaborative Network (RCCN) @rccnaging]

New Funding Opportunity! This mechanism will support PIs who have current pilot support through an NIA Center Program to incorporate interdisciplinary input, using services provided by investigators affiliated with another NIA Center Program. Learn more: https://t.co/zrp22oj0NW

[Gustavo Duque @DrGustavoDuque]

Great conversations on the future of #frailty and #IntrinsicCapacity. Whom do you recognize in this picture?

[Stephen Kritchevsky @agingup]

@j_n_justice @xprize To think, I knew you when. . .

[Jamie Justice @j_n_justice]

Honored to be named one of TIME's 2026 Longevity Leaders! Leading @XPRIZE Healthspan means chasing big questions: How do we measure aging? Slow it? Separate real science from hype? The work is just beginning. Thanks @TIME & @AlicePark 👇
#XPRIZEHealthspan
https://t.co/uNIVWWqEdL

[The Alliance for Longevity Initiatives (A4LI) @theA4LI]

@PetrSramekBench @ARPA_H @BreannaDeutsch @GenerationLab_ @Georgetown @peteoheeron @FibroBiologics @HeckerLouise @matterbio Breakthroughs in the lab mean nothing if they can't reach patients. Our panel on Translating Geroscience is tackling the critical pipeline from discovery to clinic — and what it will take to get there.

Moderator: Hanadie Yousef
Panelists: @agingup, David Gobel, @mkaeberlein

[Stephen Kritchevsky @agingup]

Looking for a Research Fellow interested in brain-aging and physical function to work on observational studies like SOMMA (Study of Muscle, Mobility and Aging) and B-NET and to design the next generation of studies in this area.

👉 Apply here: https://t.co/1VQeDVj2eR

[Matt Kaeberlein @mkaeberlein]

I’m seeing some dangerous trends in “longevity medicine” and biohacker culture as doctors, pharmacists, and influencers push the edges of what’s legal and ethical.

Here’s one example 👇

Unscrupulous marketers are selling research-grade chemicals while packaging them to look like benign dietary supplements. That design choice isn’t accidental. It’s meant to make people think these compounds are safe, tested, and appropriate for human use, when many are not.

SLU-PP-332is a good case study. Despite sometimes being called a “peptide,” it’s actually a small-molecule drug with no human safety or efficacy data. It has only been tested in a handful of mouse studies. Yet it’s being promoted as an “exercise mimetic,” and some clinicians are even illegally prescribing it.

Do a quick Google search and you’ll find plenty of sketchy sites selling “research-grade” SLU-PP-332. Don’t buy it.

If you wouldn’t take the brown Sigma-Aldrich bottle and sprinkle it on your yogurt, why would you trust the exact same chemical sold by a fly-by-night internet vendor, encapsulated with unknown purity and zero oversight?

I tend to be libertarian when it comes to healthcare - people should be free to make choices about their own bodies if they’re fully informed.

This isn’t informed choice. It’s deceptive opportunism that puts real people at risk.

Choose evidence over aesthetics. Science over marketing.

[Research Centers Collaborative Network (RCCN) @rccnaging]

Upcoming RCCN Webinar! In this webinar, the speakers will discuss how potential bias in the data used to train AI models can potentially negatively impact outputs, and how to address data bias. Learn more and register here: https://t.co/6wvTSC8WTB

[Research Centers Collaborative Network (RCCN) @rccnaging]

We are proud to feature 2025 RCCN Pilot Awardees Lauren Ferrante and Kathryn Callahan in this Pilot Awardee Spotlight! Learn more about their Inter-NIA Center pilot project here: https://t.co/11Yuz0Doip #Frailty #AgingResearch

[Research Centers Collaborative Network (RCCN) @rccnaging]

ICYMI: Many of the recordings and slides from our recent workshop are now available on the RCCN website here: https://t.co/gw2w7um2DY #ADRDResearch #AgingResearch

[Research Centers Collaborative Network (RCCN) @rccnaging]

Thank you to all who joined us in-person and online for the RCCN Workshop "Innovative Perspectives to Advance AD/ADRD Multidisciplinary Research" on Nov 11-12, 2025! We look forward to sharing presentation recordings and slides soon.

[GeroScience @GeroScienceAGE]

🧠 New in GeroScience!
“Age, glucose tolerance, and cognitive performance in female vervet monkeys” by Brett M. Frye (@brettmfrye) & Carol A. Shively (@1749_336) et al.

Key insights:

📍In middle-to-older aged female vervet monkeys, age was strongly associated with higher fasting glucose, impaired glucose clearance, and reduced insulin area-under-the-curve.

📍Animals with worse glycemic control over time showed poorer executive function and a trend toward weaker working memory.

📍These findings highlight a link between metabolic aging and cognitive decline in a primate model, reinforcing the importance of metabolic health for brain aging.

🔗 https://t.co/sTJOGMuqHU

#CognitiveAging #Metabolism #NonHumanPrimates #VervetMonkey #HealthyAging

[Martin Picard @MitoPsychoBio]

Depression is not a “thing”. It is a label for a range of dynamic, energetic states that manifest across the body-mind unit.

[Agingdoc🩺Dr David Barzilai🔔MD PhD MS MBA DipABLM @agingdoc1]

Geroscience: A Translational Review

"Therapies that inhibit aging biology, such as caloric restriction, metformin, senolytics, or rapalogs, may slow the development and progression of disease and functional decline in humans."

@agingup, Steven Cummings

https://t.co/1rXkXszd10

[Riccardo Calvani @r_calv]

Geroscience: A Translational Review | Nutrition, Obesity, Exercise | JAMA | JAMA Network https://t.co/Mqk5CVQAwx

[Ashkan Afshin @aafshinmd]

Geroscience is reshaping medicine—targeting aging biology (via caloric restriction, metformin, rapamycin, senolytics) may delay multiple age-related diseases at once. A new @JAMA_current review explores the science, promise, and clinical frontiers.https://t.co/a3kp09gBxW