Uploaded December 2021 | Updated September 2026, 2 weeks ago
“Remarkably, individuals showed an average decrease in biological aging of 8 years”
This week in the journal Aging-US, we get a look at the first data of Rejuvant, an alpha ketoglutarate (AKG) based formulation, in human patients.
It was previously shown in a study that AKG supplementation increases the lifespan of the worms C.elegans and I reported on the study that came out last year showing that the calcium-salt of AKG extended both the lifespan and healthspan of mice.
In this publication they show 42 participants take Rejuvant and used DNA methylation (epigenetic age) to assess their "biological age". The data shows it conferred an average 8 year reduction in biological aging, after an average of 7 months of use. In this video we will break down this paper completely, address exactly what the data shows, what it doesn’t show and what I think the take homes are? We'll also discuss the limitations such as lack of clinical markers and no placebo group!!
Find me on Twitter - twitter.com/EleanorSheekey
Support the channel
through PayPal - paypal.me/sheekeyscience?country.x=GB&locale.x=en_GB
through Patreon - patreon.com/TheSheekeyScienceShow
TIMESTAMPS:
Intro - 00:00
Alpha ketoglutarate - 00:30
Human data & age reversal - 1:30
Limitations - what you must know - 05:30
REFERENCES:
Demidenko O, Barardo D, Budovskii V, Finnemore R, Palmer FR, Kennedy BK, Budovskaya YV. Rejuvant®, a potential life-extending compound formulation with alpha-ketoglutarate and vitamins, conferred an average 8 year reduction in biological aging, after an average of 7 months of use, in the TruAge DNA methylation test. Aging (Albany NY). 2021; 13:24485-24499. doi.org/10.18632/aging.203736
Icons in intro; "freepik.com/free-photos-vectors/background"Background vector created by freepik - freepik.com
“Remarkably, individuals showed an average decrease in biological aging of 8 years”
This week in the journal Aging-US, we get a look at the first data of Rejuvant, an alpha ketoglutarate (AKG) based formulation, in human patients.
It was previously shown in a study that AKG supplementation increases the lifespan of the worms C.elegans and I reported on the study that came out last year showing that the calcium-salt of AKG extended both the lifespan and healthspan of mice.
In this publication they show 42 participants take Rejuvant and used DNA methylation (epigenetic age) to assess their "biological age". The data shows it conferred an average 8 year reduction in biological aging, after an average of 7 months of use. In this video we will break down this paper completely, address exactly what the data shows, what it doesn’t show and what I think the take homes are? We'll also discuss the limitations such as lack of clinical markers and no placebo group!!
Find me on Twitter - twitter.com/EleanorSheekey
Support the channel
through PayPal - paypal.me/sheekeyscience?country.x=GB&locale.x=en_GB
through Patreon - patreon.com/TheSheekeyScienceShow
TIMESTAMPS:
Intro - 00:00
Alpha ketoglutarate - 00:30
Human data & age reversal - 1:30
Limitations - what you must know - 05:30
REFERENCES:
Demidenko O, Barardo D, Budovskii V, Finnemore R, Palmer FR, Kennedy BK, Budovskaya YV. Rejuvant®, a potential life-extending compound formulation with alpha-ketoglutarate and vitamins, conferred an average 8 year reduction in biological aging, after an average of 7 months of use, in the TruAge DNA methylation test. Aging (Albany NY). 2021; 13:24485-24499. doi.org/10.18632/aging.203736
Icons in intro; "freepik.com/free-photos-vectors/background"Background vector created by freepik - freepik.com






![the 3 levels of aging therapeutics
Why do so many anti-aging drugs work in mice but fail in humans? It turns out, we might be aging in fundamentally different ways. A new minimal model from physicists Peter Fedichev and Jan Gruber suggests that aging isnt a chaotic mess of billions of problems, but a process governed by just three macroscopic variables.
In this video, I break down their paper to explain why current Level 1 interventions (like senolytics and cellular reprogramming) might only improve healthspan, not maximum lifespan. Well explore the difference between stable species (humans) and unstable ones (mice), and reveal the physics-based roadmap—Level 2 and Level 3—required to actually extend the human lifespan limit beyond 120 years.
Find me on Twitter - https://twitter.com/EleanorSheekey
Support the channel
through PayPal - https://paypal.me/sheekeyscience?country.x=GB&locale.x=en_GB
through Patreon - https://www.patreon.com/TheSheekeyScienceShow
TIMESTAMPS
0:00 – Why 300 aging theories might be wrong (The Physics of Universality)
3:45 – The 3 variables that control your lifespan
7:12 – Why mice are biologically broken compared to humans
9:58 – The 3 Levels of Intervention: Why reprogramming isnt enough (yet)
13:20 – The only way to actually break the 120-year limit
REFERENCES
Fedichev, P. & Gruber, J. (2024). A Minimal Model Explains Aging Regimes and Guides Intervention Strategies. bioRxiv. [Preprint]
Pyrkov, T. V., et al. (2021). Longitudinal analysis of blood markers reveals progressive loss of resilience and predicts ultimate limit of human lifespan. Nature Communications, 12, 2765.
Avchaciov, K., et al. (2022). Unsupervised learning of aging principles from longitudinal data. Nature Communications, 13, 6529.
Perevoshchikova, K. & Fedichev, P. O. (2024). Differential Responses of Dynamic and Entropic Aging Factors to Longevity Interventions. bioRxiv.
Tarkhov, A. E., et al. (2024). Universal transcriptomic signature of age reveals the temporal scaling of Caenorhabditis elegans aging trajectories. AgingBio, 2, 1–16.
Tong, H., et al. (2024). Quantifying the stochastic component of epigenetic aging. Nature Aging, 4, 886–897.
Meyer, D. H. & Schumacher, B. (2024). Biologically informative or merely random? The stochastic nature of epigenetic clocks. Nature Aging, 4, 871–885.
Sinclair, D. A. & Guarente, L. (1997). Extrachromosomal rDNA circles—a cause of aging in yeast. Cell, 91(7), 1033–1042.
Medvedev, Z. A. (1990). An attempt at a rational classification of theories of ageing. Biological Reviews, 65(3), 375–398.
Please note that The Sheekey Science Show is distinct from Eleanor Sheekeys teaching and research roles. The information provided in this show is not medical advice, nor should it be taken or applied as a replacement for medical advice. The Sheekey Science Show and guests assume no liability for the application of the information discussed.
Icons in intro; https://www.freepik.com/free-photos-vectors/backgroundBackground vector created by freepik - www.freepik.com the 3 levels of aging therapeutics](https://i.ytimg.com/vi/c-_Pdp5IIvw/mqdefault.jpg)



