Blood accounts for 7% of the human body weight.
There also is progress to replacing the extracellular matrix which is the material between cells.
These approaches and using young stem cells to replace old cells in various locations are heading towards replacing more and more of the body with younger cells. This intuitively would seem to be an effective way to extend lives if the procedures can avoid any harmful effects of replacing the tissue and cells.
Howver,
* constant young blood replacement
* new stem cell additions
* organ replacement (telomerase rejuvenated)
* extra cellular matrix replacement
The brain is 2% of the human body and the stem cell replacement could replace old neurons. Brain plasticity would allow the brain to include many new cells without harming the individual.
It seems like these approaches could rejuvenate 98.5% of the body.
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Brian Wang is a Futurist Thought Leader and a popular Science blogger with 1 million readers per month. His blog Nextbigfuture.com is ranked #1 Science News Blog. It covers many disruptive technology and trends including Space, Robotics, Artificial Intelligence, Medicine, Anti-aging Biotechnology, and Nanotechnology.
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