What I heard about this is anecdotal. There was a rancher who had cows who ate grass from a certain hill. He noticed the cows who had abnormal growths would eat the grass from this hill and the growths would go away. So a doctor made a concoction using the special mix of greenery from the hill and blends it together in an herbal shake and gives it to cancer patients.
The nuttier sort of witness falls for this. I actually can't read the right hand side of your post above, but I heard that this is part of the Gerson Therapy, if not the main part. But these ARE witnesses we are talking about, delusional people susceptible to pipe dreams.