Learn
IBS & FODMAP essentials
Fermentable
These carbs are fermented by gut bacteria, producing gas
Oligosaccharides
Fructans & GOS — found in wheat, garlic, onion, legumes
Disaccharides
Lactose — found in milk, soft cheese, yogurt
Monosaccharides
Excess fructose — found in honey, apples, mangoes
Polyols
Sorbitol & mannitol — found in stone fruits, artificial sweeteners
Generally safe in normal portions
May trigger symptoms in larger amounts
1. Restriction
2–6 weeksRemove all high FODMAP foods to calm symptoms and establish a baseline.
2. Reintroduction
6–8 weeksSystematically test each FODMAP group to find YOUR triggers and tolerance levels.
3. Personalization
OngoingCreate your long-term balanced diet including well-tolerated foods. Enjoy variety!
FODMAP research courtesy of Monash University. GutLens is an educational tool — always consult a registered dietitian for personalized medical nutrition therapy.