People with diarrhea due to irritable bowel syndrome can eat steamed buns because they need to avoid foods like milk, coffee, and soy milk, which can exacerbate diarrhea. Steamed buns do not cause diarrhea, so patients with irritable bowel syndrome can eat them normally, but they should not eat too much and should eat in moderation, avoiding overeating. At the same time, patients with irritable bowel syndrome should eat more easily digestible and light foods, avoid spicy and stimulating foods as well as greasy foods, and also avoid alcohol, strong tea, coffee, etc.