No, klotho itself isn’t... What is new is using CRISPER to re-write a benign virus to get it into both the blood stream and into the brain so that cells can produce elevated amounts of it themselves...
Before was just supplementation and experiments.
And all you need to do is inject the spliced virus into your brain. What could possibly go wrong?
I would prefer at present to just go with the exercise route to increase Klotho. We know that exercise is good for us anyway, and maybe this is the underlying reason why. Although, just like turning the key means that your car engine starts, I don’t particularly care why exercise works, just that it does.