Dr Max Pemberton discusses irritable bowel syndrome (IBS), focusing on what he describes as a “major cause” that is not related to diet. In the presented discussion, he argues that some patients are living with long-term symptoms such as bloating, cramping, urgency to use the toilet, and pain that can disrupt daily life. He says patients can feel dismissed if their symptoms are characterised as being driven by psychological factors, describing this as being labelled “neurotic.” The article urges people experiencing IBS-type symptoms to raise specific concerns with their doctor, rather than accepting an unexamined explanation. While the sources provided do not include detailed medical evidence or specific diagnostic steps, they share a common theme: IBS symptoms are real and can require medical discussion to identify contributing factors beyond diet, and patients may benefit from actively asking clinicians about potential causes and appropriate management options.