Because something has not been accepted by mainstream medicine or is not widely known does not make it fishy. There are lots of people and alternative therapies that have been curing cancer with very good success for many years now. You don't hear much about any of them and the reasons should be obvious. Mainstream medicine hardly recognizes anything which it has not patented or otherwise cannot control and it has the mainstream media which depends on hundreds of millions in annual medical advertising firmly under its control.
For a really good look at what lengths mainstream medicine will go to in order to suppress alternative information, I recommend former NY state legislator Dan Haley's excellent book "Politics in Healing: The Suppression and Manipulation of American Medicine."