Possibly since the age related trigger that turns off spinal cord cell regeneration has been discovered and turned back on in lab mice.
Sad thing about these things like that. I read the article when it comes out. Then I cannot find anything as a follow up in the future on how it is progressing or failed. Especially drugs like the body building in a bottle. Or the testing on mice that turned back the aging process equivalent to a 60 year old man having his aging process reversed to about his late 20's.
A common theme in all of these is the ability to keep excess youthful population around for a very indeterminate amount of time. If you are able to keep your internal age clock in it's 20's, and your body buff out of a bottle, and injuries healed by turning back on age disabled repair functions. When will you get out of the way of younger generations and let them have jobs? Will your ageless demographic refuse to give up control and never go away? Who would really be willing to commit suicide just to get out of the way for the good of future generations once they had these medical break trough's to live 200, 300, 500, 1000 ........even another 50 years with an effective 25 year old body?
Given human greed and lack of caring about anyone but self when it comes to these kinds of things. All of this will be abused to the farthest limits possible once it was made available. This would be a genie once let out of the bottle, that the bottle would be pulverized, then with millions, even billions of helping hands, shot into the sun.
