This was something implied, although not directly stated. Drug companies have a reputation for doing exactly what you just expressed Grz, and sad to say, so do many alternative medicine companies, that sell supplements or treatments, although they tend to use anonymous internet user testimony, rather than studies, to try and prove the efficacy of their product. Dodgy studies, or dodgy testimonies, add up to the same thing, dodgy companies, and practice, and potentially dangerous products.
As with everything, buyer beware, and do your research, after all it is your own health you're risking by not doing your homework.