Dr. Trisha Pasricha wants everyone to experience “poophoria,” the joy of a healthy digestive system. Loading audio narration… Your gut health is the key to improving your overall health and well-being, according to Pasricha’s new book “You’ve Been Pooping All Wrong.”As a gastroenterologist and professor at Harvard Medical School, she works with patients on simple, everyday habits for gut health, and said you don’t need expensive pre- or probiotic pills to see a difference.”The gut…