The mechanistic premise of the device. The I-ON-A-CO’s own advertising stated that it ‘magnetizes the iron in your body and thus increases oxygen brought to the tissue cells,’ so that ‘this oxidation purifies the blood-stream and tends to restore the Ionaco user to perfect health.’ Morris Fishbein’s 1932 Fads and Quackery in Healing records the same pitch, that a magnetic field ‘controlled all disease by magnetizing the iron in the blood.’ Classified mechanism-only: the claim describes a supposed physical mode of action rather than any measured clinical outcome. It is refuted. The iron in the blood is organically combined within the haemoglobin molecule, not free metallic iron, and is not meaningfully magnetizable; a weak induced field from a coil of wire does not increase tissue oxygenation, and there is no pathway by which it would purify the blood or restore health. The claim is the magnetic-and-oxidation analogue of the vitalist mechanisms advanced for the contemporaneous electrical devices of Otto Overbeck and Albert Abrams.