They have done that, you just have to find it, look at it, and read it without prejudging it as quackery: Dr. Calin Pop MD: The TRUTH about Colloidal Silver & Gold, for just one example. There's tons of info available!
Do you know that the mainstream media, including the medical media, is controlled by a handful of corporations and is completely biased? Do you know that if pharmaceutical companies do not want information about more effective alternatives to their products to get out and become public knowledge that they have extreme power and wealth at their disposal to make sure it doesn't happen? They tell us whatever they want to tell us to sell products; the health and safety of the consumer is of little to no consideration. Suppression of effective treatments and cures is very, very real, which includes censorship of papers and articles that demonstrate success.
The scary thing about indoctrination is that we're taught not to see these invisible forces at work, and definitely not to question it if the veil does lift! We are in a unique position in that we have witnessed first-hand literally hundreds and thousands of people who have enjoyed improved health and wellness based on the info and tools we share (supplements, plants, lifestyle choices, etc). We live for Truth and honor, and it is our duty to share what we have found.