I had been a vegan from 2006 (previously vegetarian in 2000) when according to my primary care physician, my body needed animal protein and instead of disagreeing, I went along with his suggestion. After the next few years of experiencing major stomach pain, I was diagnosed with Ulcerative Colitis in 2018. My primary care suggested becoming a vegan once again in 2019, as the stomach issues worsened, and immediately upon going vegan, the stomach paind=s diminished and I have never flet better.