Foods and IBS: FODMAPs, Portions, and Your Personal Tolerance
FODMAP content is a useful starting point for understanding which foods commonly trigger IBS — but portion size matters as much as the food itself, and individual FODMAP tolerance varies significantly. This section provides per-food FODMAP information with honest guidance on what "low FODMAP" actually means in practice.
The key thing to understand about FODMAPs:
FODMAP thresholds are dose-dependent — many high-FODMAP foods become tolerable in smaller portions. The goal of the low-FODMAP protocol is not permanent elimination of all high-FODMAP foods; it's temporary restriction followed by systematic reintroduction to find your personal thresholds for each FODMAP subgroup.
Per-food FODMAP guides coming soon
We're building out detailed pages for individual foods — covering their FODMAP content, safe serving sizes, preparation tips that reduce FODMAP load, and common alternatives. Categories will include grains, dairy, fruit, vegetables, legumes, and condiments. In the meantime, GutDiaries already helps you track which specific foods correlate with your IBS symptoms.
What this section will cover
- → FODMAP subgroups explained — fructose, lactose, fructans, GOS, and polyols and which foods contain them
- → Portion size thresholds — why "it's high FODMAP" is often incomplete without portion context
- → Safe swaps — low-FODMAP alternatives for common high-FODMAP foods
- → Cooking changes — how preparation method can affect FODMAP content (e.g., garlic-infused oil)
- → Reading labels — common hidden FODMAPs in packaged foods
Find your personal food tolerances — free
GutDiaries lets you log what you eat and track IBS symptoms, so you can identify which foods and portions your gut actually tolerates rather than following a blanket list.
