Toots & Trots / Does it matter?
Plain yogurt or lactose-free yogurt — does it matter?
Regular yogurt contains lactose, though the fermentation process breaks down a portion of it. Many J-pouch users have reduced lactase activity after surgery, making even the residual lactose in plain yogurt enough to cause gas or loose output. Lactose-free removes that variable entirely.
Scores use a standard reference serving via the GASP model. Individual tolerance varies.
Not really — the scores are very similar.
Both options sit close together overall. Go with whichever you enjoy more.
Try it on your own food
These ideas are a starting point — see how your actual meals and foods score.
More comparisons
Where the scores come from
- The GASP model — Gas, Agitation, Stool-loosening, Particle load
- Monash University FODMAP program — fermentable carbohydrate thresholds
- USDA FoodData Central — nutrient composition data
Scores are our modelled synthesis — not endorsed by these organisations.
Written and checked from lived experience with a J-pouch. Last updated June 2026. The GASP Score is a modelled estimate, not medical advice — always work alongside your own clinical team.
Scores are modelled estimates, not medical advice. Everyone's gut is different, and tolerance changes over time. Reintroduce foods one at a time, and follow your own medical team's advice.