Assertion: lactose intolerance's symptom | /r/CreatedBy | irritable bowel syndrome
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text: For example, the symptoms above can also be caused by: irritable bowel syndrome (IBS) – a long-term disorder that affects the digestive system
text: Your doctor can make sure that your symptoms are caused by lactose intolerance and not by another problem such as irritable bowel syndrome, inflammatory bowel disease, overuse of laxatives, or problems digesting foods that contain fructose or sorbitol.