Dval. You said you eat plant created food. Do you eat a lot of salad? I do not eat lots of meat either. Occasionally ground beef or plant based ground meat substitute. But salads and lots of plant based foods do cause loose stool. I do eat fish though. Sometimes the natural oils in certain fish cause terrible problems. I guess we kind of take it day by day.
I did say that I do not eat healthy foods. I find that if you are plagued with UC, you cannot follow a truly healthy diet. Stay away from juices also. Fruit, veggies, juices, absolutely no dairy, and by the way, almond milk, rice milk, etc if taken more than 2 ounces, will also cause problems. It's not just the ingredients.. it's the consistency. I have been managing this since age 18. My mom had it, my brother had most of his colon removed, and one niece has Chrohns. I eat lots of bread, plain rice, potatoes, etc. Like I said, not so healthy, but it allows me some days where I can actually go out of the house.