The use of concepts that are impossible to measure enables success to be claimed even though nothing has actually been accomplished. Don't fall for paranoid accusations. Unconventional practitioners often claim that the medical profession, drug companies, and the government are conspiring to suppress whatever method they espouse. No evidence to support such a theory has ever been demonstrated. It also flies in the face of logic to believe that large numbers of people would oppose the development of treatment methods that might someday help themselves or their loved ones.
True scientists share their knowledge as part of the process of scientific development.
Quacks may keep their methods secret to prevent others from demonstrating that they don't work. No one who actually discovered a cure would have reason to keep it secret. It is safe to assume that all such messages are bogus. If genuine, they would be making headlines everywhere. Be skeptical of any product claimed to be effective against a wide range of unrelated diseases - particularly diseases that are serious.