Leek (bulb)
High FODMAP (Avoid)High in fructans
Is leek (bulb) low FODMAP?
Leek (bulb) is high FODMAP and best avoided during the elimination phase.
The white bulb is onion-level fructans. Only the green tops are safe.
FODMAP subgroups to watch
Leek (bulb) contains fructans that can drive SIBO symptoms.
SIBO note
Watch this one for Hydrogen sulfide SIBO (ISO). Leek (bulb) contains sulfur compounds, and hydrogen sulfide (ISO) patterns can be more sensitive to these, especially in larger servings.
Low-FODMAP vegetables to try instead
A single food is only half the story. Eating leek (bulb) in a bigger meal? See how it stacks with the rest of your plate.
FODMAP thresholds follow the Monash University Low FODMAP Diet research. Tolerance is individual. Unsibo is a wellness companion; it is not a medical device and does not diagnose, treat, or prevent any condition.