Because arthritis and rheumatism are painful and crippling and may drag on for a lifetime, despairing victims are easy prey for quacks. They spend an estimated $250 million a year for treatments that are worthless—or, worse, dangerous. Last week the U.S. Food and Drug Administration banned the importation of one such dangerous "remedy" known as Liefcort, which a maverick Canadian doctor has been making in his basement.
U.S.-born Robert E. Liefmann, 42, graduated from Montreal's McGill University Faculty of Medicine, but has been involved in an eight-year hassle with licensing authorities and has never been licensed to practice. This has not kept...