Not putting this on a health topic because no responsible health practioner is going to advise taking a supplement for a hoped for result that hasn't been tested on humans.
I am not recommending it either, not that I have any medical credibility on the topic either way.
So this is more of a general discussion / philosophy topic.
You may have heard that Taurine has shown very good results in life extension in mice.
This is the same ingredient that is found in energy drinks, but energy drinks have lots of other stuff.
Apparently, to get a roughly equivalent dose you'd need to drink 5 energy drinks a day and you don't want to do that!
But wait. Taurine itself is available in supplements.
Apparently, Taurine in reasonable doses is not known to be harmful but if you try it for life extension you wouldn't know --
if it would work at all (no human research)
what the optimal dose would be even though you can rough guess (no human research)
if perhaps it would be harmful taken over a long time (no human research)
So this cannot and is not recommended as we wait (for how long? decades?) for human research to be done.
So here's the 64,000 baht question.
If you're already old, you don't have the time to wait for the human research.
Would it really be so crazy for such people to take taurine supplements now?
What do they have to lose if it's a mistake? Obviously much less than younger people.