You are partially correct. But here a broader picture - you may have to get in touch with the person(s) who is claiming the cure to draw a conclusion. Sometimes

You are partially correct. But here a broader picture - you may have to get in touch with the person(s) who is claiming the cure to draw a conclusion. Sometimes they may have done multiple trials within their own circle, or if it's a physician on his patients. They generally will have documented their patients. They generally will not have the means to do large scale trials. (I heard that it cost about 10 million, and about 10 years to get an FDA approval). When a unknown/non credentialed practitioners or a physician claim something it is generally ignored - as far as I'm concerned the cancer treatment cartel industry is real (As with almost every other industry), if by the rare chance it does get some publicity (as it happened with the Linus Pauling, Nicholas Gonzales), the cartel indulges in accusations of quackery and character assassination. Now I'm not saying that the small time practitioners are always correct, in fact they are mostly wrong. But they deserve some investigation.