So what foods should we avoid for patients with colitis? First of all, we should try not to eat milk and seafood, because milk and seafood are types of foreign proteins to the human body, which could potentially become allergens. Because colitis patients are likely to experience colonic allergies after consumption, resulting in worsened diarrhea, so it is advisable to avoid these foods as much as possible. Secondly, we should minimize the consumption of high-fat foods, because patients with colitis have poor digestive functions, particularly weak in digesting fats. Incompletely digested high-fat foods can cause "slippery gut" leading to diarrhea. Over time, the accumulation of fats can also induce complications such as fatty liver, etc. Therefore, foods high in fats such as lard, cream, walnuts, peanuts, almonds, etc., should be avoided or eaten sparingly. Third, it is important to eat less gas-producing food: because colonic inflammation in colitis, due to chronic and recurrent episodes, causes alternation of ulcers and scar fibrosis in the colonic mucosa, which reduces the elasticity of the colonic inner wall. Consuming more gas-producing foods, such as sweet potatoes and soybeans, may cause acute intestinal dilation due to the filling of gas in the intestines, or even lead to complications such as ulcer perforation. Fourth, eat fewer vegetables containing coarse fiber: the fiber in vegetables can absorb intestinal water and have a laxative effect, which might aggravate diarrhea. Therefore, foods high in coarse fiber like celery, crown daisy, cabbage, spinach, etc., should be consumed in limited quantities.