Alternative facts have long existed in the world of food. When you create a powerful enough fiction, you are no longer bound by the need for evidence, for fact checking, for responsibility and a concern for the safety of the vulnerable. The people peddling the candida myth have discovered that in making up a problem, valuable new markets can be created from nothing.
His magic water cures cancer and many other ailments. Sounds legit!
Update! Steven Novella writes about The Miracle Cure for Everything in an excellent SBM piece.
The reality check of science may be disappointing to our emotional desires, but at the same time it has given us the actual ability to prolong life and improve quality of life significantly. I personally would never trade the hard-won knowledge of science for the comforting fictions of the cure-all.