Overview
About Kohlrabi
Kohlrabi is the swollen stem of a cabbage, mild and sweet and crunchy, and it is genuinely a low trigger vegetable: nothing on its card reaches the high band.
No histamine, no histamine liberator, no gluten, lactose, nightshade, sulfite, nitrite, glutamate or caffeine flag. What it has instead is a row of moderates, with fructans, total FODMAPs, salicylates, oxalate, nickel and fermentability all sitting borderline. That is the profile of a vegetable you can eat regularly at normal portions and only notice at volume, which is a much better deal than most brassicas offer. Compared to its relatives it is the easy one: cauliflower grades high on FODMAPs and polyols, broccoli grades poorly on fermentability and salicylates, and kohlrabi undercuts both.
Sensitivities
How Kohlrabi scores
Watch for
What trips people up
- Fructans and total FODMAPs rate borderline, which is dose dependent rather than off limits. A few matchsticks in a slaw is a different food to half a bulb shredded into a salad bowl, and the raw shredded version is where people overshoot without noticing.
- Fermentability rates borderline too, so on a SIBO protocol the roasted or braised version is usually easier to tolerate than the raw crunch at the same weight.
- Salicylate, oxalate and nickel all sit moderate. Individually minor, but kohlrabi is filling and bland enough that people eat a lot of it, and three moderates in one large portion can add up during an elimination trial.
- The leaves are not the bulb. Kohlrabi tops are cooked like collards and carry a leafy green profile of their own, so log them as a separate food if you use them.
- Clean where fermented and preserved vegetables fail: no histamine, no liberator, no glutamate, no sulfite. That makes kohlrabi a good raw base if sauerkraut, pickles and kimchi are what set you off.
Diet fit
Where it fits
Swap ideas
More alternatives
FAQ
Common questions about Kohlrabi
Is kohlrabi low FODMAP?
It grades borderline rather than fully low, with fructans as the reason. Brassicas store fructans, and kohlrabi is a brassica stem, so the answer is portion controlled: a modest serving normally passes, a raw slaw built around a whole bulb is a fructan load. Weigh it out during the elimination phase and you will usually find your own ceiling is higher than you feared.
Is kohlrabi high in histamine?
No. Kohlrabi carries no histamine flag and no histamine liberator flag, so it is a workable vegetable on a low histamine diet. Fresh matters more than the grade here: buy firm bulbs, and use it soon after cutting rather than storing prepped raw sticks for days.
Is kohlrabi easier on the gut than broccoli or cauliflower?
On the grades, yes. Cauliflower grades high on total FODMAPs and polyols, broccoli sits worse on fermentability and salicylates, and both grade poorly for a low fermentation approach. Kohlrabi stays in the borderline band across the board and sits roughly level with green cabbage. If cruciferous vegetables generally wreck you, kohlrabi is the sensible one to retest first.
Do the goitrogens in kohlrabi affect the thyroid?
Kohlrabi contains glucosinolates like every brassica, and in very large raw amounts those compounds can interfere with iodine uptake. Normal food portions are not a concern for anyone with adequate iodine intake, and cooking reduces the effect further. If you have a diagnosed thyroid condition and eat raw brassicas daily in quantity, that is a conversation for your clinician rather than a reason to drop the vegetable.
References
Read the background
Ratings reflect the Triggerbites ingredient database and may vary with portion size and preparation.