Stomach pain is a common clinical symptom and the causes of its occurrence are complex and varied. Patients should try to avoid mechanically and chemically stimulating foods in their daily lives. Mechanically stimulating foods refer to raw, cold, hard and coarse fibre vegetables and fruits such as onions, leeks and celery; chemically stimulating foods include thick broths, coffee, strong tea and condiments such as chillies and sour vinegar. It is important to note that in reality, the cause and severity of the disease can vary significantly from patient to patient, and that diet is only one part of the treatment of the disease. Therefore, it is advisable to seek medical advice if you are unwell, so that your doctor can develop an appropriate treatment plan for you and give you sound dietary advice.