I assume Gerwyn is talking about study evidence -
of which there is none. If he's talking about
anecdotal evidence I'm sure there's evidence on
both sides. We have heard from two people that did
improve from it and from people who didn't.
True, but as Orla rightly pointed out - at least - there
is a problem with anecdotal evidence from people taking or
having taken LP.
And talking science, as makes sense, I am with Gerwyn.