Diarrhea in the morning after eating breakfast is mostly considered to be caused by dietary factors, but does not exclude the possibility of gastrointestinal inflammation, need to actively adjust the diet, if the symptoms persist, you need to go to the hospital for gastroscopy and other tests to confirm the presence of gastrointestinal inflammation. Common causes and treatments 1, dietary factors: If you eat food that is not easily digestible or can promote peristalsis at breakfast, it may cause diarrhea, such as the intake of coffee, oats and other foods that promote peristalsis at breakfast, which may lead to diarrhea. This situation does not need to worry too much, replace the breakfast food can be; 2, gastrointestinal inflammation: gastrointestinal inflammation caused by infectious factors is more common, bacteria, viruses and other contaminated food, the human body ingested these foods will cause gastrointestinal inflammation, patients often have abdominal pain, diarrhea, nausea and other symptoms. Treatment 1, general treatment: promptly replenish electrolytes and water after diarrhea, eat less or avoid foods that trigger diarrhea in the subsequent diet, if the diarrhea is serious, you need to temporarily fast during the acute period, and actively replenish water, energy and electrolytes; 2, medication: if the infection is more obvious, you can use anti-inflammatory drugs under the guidance of a doctor, and then start a light and liquid diet after the symptoms have subsided. Caution Many people like to drink milk in the morning, but the phenomenon of lactose intolerance is common among our nationals, and some people lack the enzyme to digest lactose, resulting in the lactose inside the milk cannot be digested and absorbed, which can cause non-infectious diarrhea, and milk and other dairy products should be ingested carefully.