Migraine is linked to the production of NO by gut bacteria. Eating disorders (both bulimia and anorexia) may be caused by an auto-immune response to a hormone

Migraine is linked to the production of NO by gut bacteria. Eating disorders (both bulimia and anorexia) may be caused by an auto-immune response to a hormone look-alike produced by (some strains? of) e. coli. Both the hormone and the bacterial substitute cause satiety. Depending on the kind of antibodies produced, their effect can be amplified or inhibited.