Yes we do. That's very valuable sometimes. Often those studies are flawed or biased. In fact much of the time they are not even reproducible, or studies that do

Yes we do. That's very valuable sometimes. Often those studies are flawed or biased. In fact much of the time they are not even reproducible, or studies that don't support a patent holder's interests are discarded. Also thousands of years of knowledge and experience has yielded a lot fruit. Some of it is wrong for sure. Much of it too subtle and long term to fit into western trials. I suspect the error rate is comparable. Science is not the only path to knowledge and medical science is deeply flawed.