FODMAP food guide
Is grapefruit low FODMAP?
FODMAP score
33
Moderate
In small portions — Grapefruit is moderate in FODMAPs. Portion size decides whether it triggers symptoms.
FODMAPs present
Low-FODMAP serving
1/2 small grapefruit (about 80 g)
Becomes high FODMAP at
1 whole grapefruit (about 200 g)
Low at half a fruit; re-testing moved grapefruit to the excess-fructose group, which adds up in larger servings.
Seen a different rating somewhere else?+
Usually it's a portion difference, not a disagreement. This page scores grapefruit at a serving of 1/2 small grapefruit (about 80 g); at 1 whole grapefruit (about 200 g) 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.
Excess Fructose
80 g is about three segments, or half of a small grapefruit — the portion published FODMAP research tested as low. Re-testing filed grapefruit under excess fructose; past roughly half a fruit it stacks up quickly, so larger portions move into the high band.
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.