> Brain cells replaced by stem cell therapy? Have you given this any thought? A brain cell replaced by stem-cell therapy is empty -- it's not a replacement for

> Brain cells replaced by stem cell therapy? Have you given this any thought? A brain cell replaced by stem-cell therapy is empty -- it's not a replacement for the cells that contain the memory of your fifth birthday party, or that contain your knowledge of Calculus. Maybe if you replaced all cells at once or something stupid like that, but that's not what is being suggested here. http://en.wikipedia.org/wiki/Stem_cell_treatments#Brain_damage http://en.wikipedia.org/wiki/Stem_cell_treatments#Brain_dama... http://en.wikipedia.org/wiki/Neural_stem_cell http://en.wikipedia.org/wiki/Neural_stem_cell http://www.sciencedaily.com/releases/2012/04/120420105940.htm http://www.sciencedaily.com/releases/2012/04/120420105940.ht... http://www.guardian.co.uk/science/2010/nov/16/stem-cells-injected-brain-stroke http://www.guardian.co.uk/science/2010/nov/16/stem-cells-inj... From a quick search... > No, not abstract -- apoptosis is not abstract, it is a fact of life. And we have a very poor understanding of it. You have a poor understanding of it. First of all, a lot of the diseases of aging come about because apoptosis stops working and these malfunctioning zombie cells hang around and gum things up and produce erroneous signals/proteins. Rejuvenating the apoptosis process is part of the SENS platform. Cells that commit apoptosis are replaced all through your life.. It's when that process stops working well that things go wrong; they don't go wrong because of that process. In other words, apoptosis doesn't make us old, it keeps us young. It's when it stops working well - along with other things - that we get frail and sick. https://en.wikipedia.org/wiki/Strategies_for_Engineered_Negligible_Senescence#Cell_senescence.E2.80.94ApoptoSENS https://en.wikipedia.org/wiki/Strategies_for_Engineered_Negl... > 1. Stop making arguments for other people. I asked you questions, and you didn't answer them. > 2. Learn the science. You have suggested stem cell therapy to replace brain cells, but without asking yourself what brain cells do, how they function. You would do well to learn that first. Have you read Aubrey de Grey's book? It goes quite deep into the biology of his proposals (and he cites the papers that go even deeper). If you haven't, you don't even know what is being proposed so how can you know if it makes sense or not? http://www.amazon.com/Ending-Aging-Rejuvenation-Breakthroughs-Lifetime/dp/0312367074/ http://www.amazon.com/Ending-Aging-Rejuvenation-Breakthrough... I'm sure your public library also has it.