I think people _may_ have missed the joke here (it was dead) but cornflakes started off as a ‘health food’ marketed to do, well, just that (along with various other unlikely things). Lying about health effects has been an industry mainstay ever since.
Graham crackers were supposed to do the same! The cultural impact of puritanical thinking in the US is, IMO, really understated. It's amazing how many stupid things are anchored in Christian masochism.
