Cereal is a food processed from wheat, which is often eaten during the week, especially for breakfast. If you eat cereal diarrhea, may be related to some of the following factors: 1, because oats are rich in dietary fiber, and some vitamins and trace elements. Especially a large amount of dietary fiber, so after eating high-fiber cereal can lead to faster gastrointestinal movement, the gastrointestinal tract is more sensitive patients or patients with chronic diarrhea in the past, it will lead to diarrhea. 2, also depends on whether the cereal is eaten with other coarse fiber diet, such as eating cereal while eating bananas or other leafy greens, these foods are very high fiber content also Very easy to cause diarrhea. So often eat cereal diarrhea, patients are not recommended to eat cereal again.