1 1804 96 PREVALENCE OF ORTHOREXIA NERVOSA AMONG ASHTANGA YOGA PRACTITIONERS: A PILOT STUDY. PURPOSE: ORTHOREXIA NERVOSA (ON, I.E., FIXATION ON RIGHTEOUS EATING) IS A POORLY DEFINED DISORDERED EATING BEHAVIOR THAT RESULTS FROM A PATHOLOGICAL OBSESSION WITH FOOD, ITS PURPORTED NUTRITIONAL VALUE, COMPOSITION, ORIGIN, ETC. METHODS: WE INVESTIGATED THE PREVALENCE OF ON IN A LOCAL ASHTANGA YOGA COMMUNITY, BY USING A VALIDATED QUESTIONNAIRE (ORTO-15) THAT SETS A THRESHOLD OF ON DIAGNOSIS AT