Quick, now – name your cousins or nephews or aunts and uncles, in order of age. Even if you come from a large family you will do that easily, if you are, say, 65 or younger. If you are my age – soon to be 84 – you are likely to first ponder the question “what is a nephew, anyway?”, then lose interest mid-way through the list. Let’s face it: as we age our cognitive abilities deteriorate. What we need is an Elixir of Youth. One may be on the horizon.
It appears that some dudes from Stanford have discovered that they can make old mice behave like young mice, by injecting them with embryonic mouse blood! It seems that this blood is rich in a particular protein that was known previously and had been studied for other purposes. If they extract the protein from the mouse blood and inject it into old mice, they get the same rejuvenating effect. (It must be disgusting to see all those wrinkled old mice chasing young females around the cage – and if the rejuvenated old mouse is female … too awful to contemplate.) Anyway..
The Stanford group has gone still further. Human afterbirth contains a few cc of embryonic blood, and that blood when injected into doddering, senile old mice also causes rejuvenation. Nobody has attempted to inject young mouse blood into old humans – the FDA probably would be mightily displeased. However, with a little imagination you might be able to see an Elixir of Youth just over the horizon. And all kinds of problems.
Here is the article. Easy reading: https://directorsblog.nih.gov/2017/04/25/aging-research-plasma-protein-revitalizes-the-brain/
I wrote about something similar, scornfully, a few months ago. Silly me.