Scientists have shown that young blood rejuvenates old tissues
I am stupefied by this.<p>Many, many times I have considered:<p>"what would happen if I banked my own blood and transfused it back to myself 40 years later"<p>And of course, my next thought was "of course that has been thought of, and tried, and the reason we don't all know about it is because it must not be helpful."<p>But you're telling me that, in fact, nobody thought to try this ?  It is 2014/2015 when someone got around to trying this out ?