I assume this comment is trolling. But to be clear to readers, the link states psilocybin 50% increase in lifespan of human skin etc. not human lifespan.
"[...] extended the cellular lifespan of human skin and lung cells by more than 50%"
If we assume that the effect is the same for all types of cells, it follows that the life is extended by 50% (when keeping "all other factors" constant, as usual).
