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Harold Katcher

Professor at University of Maryland - working on rejuvenation blood factors

I teach online for UMUC but am 'core' faculty. I was Academic Director for the Natural Sciences in our Asian division. I teach Astronomy and Physical Science and the Biology of Aging, Neurobiology and Human Health and Disease.

Dr. Harold Katcher is one of the discoverers of the human breast cancer gene (BRCA1), and has thousands of citations in the scientific literature, with publications ranging from protein structure to bacteriology, biotechnology, bioinformatics and biochemistry.

In December 2023 Harold Katcher announced he was leaving Yuvan due to disagreement on how best to spend the money on commercialising E5. See LinkedIn post for more info.

Visit website:


See also: Company Yuvan Research - US arm of Harold Katcher's young plasma research

Details last updated 11-May-2020

Harold Katcher is also referenced in the following:

A Paradigm Shift in Aging Research?


Harold Katcher updates London Futurists on his research and talks about his theories of ageing

Nugenics Research

Funded Harold Katcher's rat rejuvenation trial using blood fraction

Pig plasma to live longer?

The Sheekey Science Show looks at whether taking a part of blood (plasma) and injecting it into old animals is enough for rejuvenation

Sima, the 47 months-old Sprague Dawley rat — interview with Dr. Harold Katcher

Talks about Sima - the longest lived Sprague Dawley rat ever - and his E5 plasma-based therapeutic

Harold Katcher Blog Posts

Harold Katcher’s E5/Elixir (Young Plasma) Rat Trial Results

Harold Katcher’s E5/Elixir (Young Plasma) Rat Trial Results

Survival curve shows increase in average lifespan, and now Sima has become the longest-lived Sprague Dawley rat

Age Reversal in Mammals – Has This Now Been Achieved?

Age Reversal in Mammals – Has This Now Been Achieved?

Biological age and biomarkers improved to that of rats half their age

Harold Katcher Creations

The Illusion of Knowledge


By Harold Katcher - the paradigm shift in aging research that shows the way to human rejuvenation

Harold Katcher News

Katcher's Elixir update - 2nd control rat dies, TNF-alpha and IL-6 improvement persists

Live Forever Club - 10-Dec-2021

Rejuvenation continues after 4th dose - will be very interesting to see if max lifespan increases


Heales funds young plasma longevity studies

Heales - 22-Dec-2020

Many people were disappointed that Katcher didn't report lifespan impact - this is about to change


Diluting blood rejuvenates old tissues in mice

Aging Matters - 08-Jun-2020

There are things in blood that drives our ageing


Josh Mitteldorf stakes his reputation on major rejuvenation in a mammal

Aging Matters - 11-May-2020

Imagine halving your age with 4 simple injections - at the very least it will buy more time


Young blood therapy - the real deal to longevity?

h+ Magazine - 02-Apr-2013

Transfusing youthful blood factors into an older patient could be a reality soon

Topics mentioned on this page:
Young Blood