FODMAP food guide
Is white bread low FODMAP?
FODMAP score
72
High FODMAP
No — White Bread is high FODMAP and is a common trigger for IBS symptoms in typical servings.
FODMAPs present
Low-FODMAP serving
1 slice (about 24g)
Becomes high FODMAP at
2 or more slices (about 52g+)
Standard wheat white bread is high in fructans at typical servings; a single thin slice may be tolerated by some.
Seen a different rating somewhere else?+
Usually it's a portion difference, not a disagreement. This page scores white bread at a serving of 1 slice (about 24g); at 2 or more slices (about 52g+) it belongs in the high band. A source quoting the larger serve will call it high, and one quoting the smaller will call it low — the same food, measured at two different amounts.
Based on published FODMAP research and reviewed reference data. Informational only — not medical advice. Tolerance is individual; verify with a dietitian during the elimination phase.
How much is OK?
This food's verdict depends on the serving. The bands below show where the load builds, group by group.
Fructans
Fructans from the wheat flour are the only group that matters here. One slice per meal is the practical ceiling; around a slice and a half sits in the grey zone, and two slices is clearly over. Slice weight is the real variable - thin supermarket sandwich slices run 24-26 g while bakery or US-style slices reach 35 g, so judge a thick slice by weight rather than by count. Toasting, freezing or removing crusts does not change the fructan load.
Bands reflect published FODMAP research for typical preparations — individual tolerance varies, especially mid-reintroduction.
Go deeper
Related foods — gentlest first
Green scores are the real swaps; matching numbers are just relatives, not alternatives.