I don't know what's true or not - one side insists on it, while large scale trials seem to be ongoiong, some have failed, some trials appear to have been fraudu

I don't know what's true or not - one side insists on it, while large scale trials seem to be ongoiong, some have failed, some trials appear to have been fraudulent. Yet some people, including some physicians, seem to insist on it so I'd like to know what's going on. But it's difficult through the fog of misinfo.