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I contacted the author Tammy Chang, a nutrition coach and cook living in the San Francisco Bay area. While she does not have GP herself she has knowledge of how the gut functions and experience with creating nourishing meals to help heal the body, having worked one-on-one with clients and wrote her first book, The Nourished Belly Diet. She admitted this was not an easy task, finding GP to be the complicated disorder that many of us know firsthand. But she shared in her book that she "found the GP community, along with it's taking in people's harder days, is also extremely loving, supportive, and strong." Between the medical research plus interviewing and talking with those who live with GP (some of whose stories you will find in the book), she was able to get a good understanding of how to create ideas for a healing diet.