Lawyers, (full disclosure—I am one) know how to research and can teach themselves and debate/test anything. Yes, I think the medical community sells us bill of good all the time and here is one time it did.
There is no amount of legal research that you can possibly do that would replace the results of a single well-designed clinical trial. Or of any scientific research, for that matter. Lawyers are not medical researchers.
This is not to say that lawyers and researchers cannot work together. We do work with a legal team that is quite knowledgeable about things like intellectual property, human subject protection, and so forth. But they cannot do what we do, any more than we can do what they do.