20/03/2026
IBS-C, IBS-D, IBS-M. They sound similar. But they need completely different approaches, and following the wrong advice can make things significantly worse.
One of the most important things anyone with IBS can do is understand which type they actually have. Because the dietary advice is not the same, and "eat more fibre" given to someone with IBS-D can cause trouble
IBS-C : Constipation-predominant: Your gut moves too slowly. You experience infrequent, hard stools, bloating that builds throughout the day, and a feeling of not fully emptying. What helps: soluble fibre (oats, flaxseed, psyllium), plenty of water, magnesium-rich foods, and gentle, consistent movement.
IBS-D: Diarrhoea-predominant: Your gut moves too quickly. You experience urgent, loose stools often triggered by meals, stress, or both. What helps: low-FODMAP food choices, cooked rather than raw vegetables, small regular meals rather than large ones, and soluble fibre specifically to slow transit.
IBS-M : Mixed: You swing between both. This can feel completely bewildering, constipated for days, then suddenly urgent. This type particularly benefits from a detailed food and symptom diary to identify your personal pattern triggers.
If you're not sure which type you have, a two-week food and symptom diary is the single most useful starting point. Note what you eat, when you eat it, your stress levels, your sleep, and your symptoms. Patterns will emerge that even years of guessing haven't revealed.
You deserve support that's tailored to your gut, not generic advice that was designed for someone else's.
Which type resonates with you? C, D, or Mixed? Drop a letter in the comments. It helps me understand what this community most needs, and it might help someone who's never had a name for their symptoms before.