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Nutrition

IBS Subtype Patterns

IBS subtype patterns split constipation-, diarrhea-, and mixed-dominant IBS—fiber, fluid, and FODMAP tactics should match the pattern, not a one-size list.

IBS subtype patterns group irritable bowel syndrome by stool form—IBS-C constipation-predominant, IBS-D diarrhea-predominant, IBS-M mixed, and IBS-U unclassified when neither dominates. The same person can shift subtype after illness, travel, or training camp.

Fiber type, fluid timing, and FODMAP trials differ by pattern; copying a friend’s plan ignores that split.

Common questions

  • Can your IBS subtype change over a season?

    Yes—post-infectious flares, travel, antibiotics, and stress can swing stool form. Re-check patterns monthly instead of locking one diet forever.

Related guide

Meal Planning Made Simple: A Beginner's Guide to Balanced Nutrition →

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