The IBS Elimination Diet and CookbookBy: Patsy Catsos MS RD LD The complete guide for overcoming IBS by discovering your triggers and building a personalized, doable, and fulfilling diet around nutritious, delicious foods that let you finally feel your best. Patsy Catsos, MS, RDN, LD, pioneered the use of the low FODMAP diet to find your unique FODMAP fingerprint when she self published IBSFree at Last!, ushering in a new era of treating IBS through diet instead of medication. Written