Nicolás Cherñavsky’s DoNotAge Conference 2026 appearance is best understood as a progress report from an active replication programme, not as evidence that animal rejuvenation has already been reproduced.
Who is Nicolás Cherñavsky?
The Rejuvenation Science Institute identifies Cherñavsky as its president. ICR has been coordinating experiments intended to reproduce work associated with Harold Katcher using extracellular particles isolated from young pig plasma.
The project behind the conference presentation
The official DoNotAge Conference 2026 highlights include the rejuvenation replication programme among the event’s research topics. Separate ICR records document a research agreement with the University of Campinas (Unicamp) for rat experiments and state that DoNotAge.org contributed US$25,000 toward the project.
What happened in March 2026?
ICR began a rat experiment in March 2026 and initially reported partial grip-strength measurements. By August, the institute stated that it had been unable to replicate Katcher’s grip-strength result in that attempt.
ICR also reported that ambiguities in the published methods led to meaningful procedural differences and that the programme would continue after clarifying the protocol. That explanation keeps the project scientifically open; it does not convert the initial failed replication into evidence that the original rejuvenation claim is true.
Current evidence state
The correct label is ongoing preclinical replication. The cited 2026 institute updates do not establish successful replication or any human rejuvenation effect.
Why replication matters
Replication is one of the fastest ways to learn whether a dramatic animal result is robust. A failed first attempt can expose procedural ambiguity, hidden variables or limitations in the original description. A later successful attempt would still require independent repetition and would remain preclinical until tested appropriately in humans.
What this does not establish
Nothing in the current project demonstrates rejuvenation in humans. It does not validate young-plasma therapy, extracellular-vesicle treatment or any DoNotAge retail product as an anti-ageing therapy.
Sources
- Official DoNotAge Conference 2026 highlights
- ICR — organisation history and leadership
- ICR — Unicamp rat-experiment agreement
- ICR — March 2026 experiment update
- ICR — August 2026 replication-status update
Read the DoNotAge funding analysis.
Return to the DoNotAge Conference 2026 hub.
Linked entities and research
DoNotAge Conference 2026
DoNotAge Conference 2026 was held in London on September 26–27, 2026. The official highlights archive presents 12 2026 conversations spanning human trials, DNA repair, inflammation, muscle and exercise, replication and research funding, plus a 2025 conference recap.
Young Pig Blood in an Old Rat: Does It Work?
The official conference archive states that the first replication attempt did not improve rat grip strength as expected and that further mouse and rat experiments were planned after additional protocol details were obtained from the original researcher.
ICR–Unicamp Rat Rejuvenation Replication Experiment
ICR states that DoNotAge.org committed US$25,000 toward the rat rejuvenation experiment and describes DoNotAge.org as a project partner.
Nicolás Cherñavsky
DoNotAge Conference 2026 speaker and lead of an ICR/Unicamp preclinical replication project to which DoNotAge contributed US$25,000. Cherñavsky also co-authored a separate 2025 peer-reviewed acute feasibility/safety study of young-pig-plasma extracellular particles in young rats; that paper is not rejuvenation-efficacy evidence.