The last couple of days have been unrelentingly serious and depressing, with posts on the (probably) preventable death of a young Australian woman named Jess Ainscough of a rare cancer because she made the mistake of choosing the quackery that is the Gerson protocol rather than conventional medicine. Unfortunately, the "natural health community" will almost certainly learn nothing from her story, in which Ainscough, facing the very unpleasant prospect of a radical amputation, instead chose Gerson therapy and became an evangelist for that particular form of cancer quackery and "natural healing…