Celery is low FODMAP in servings up to about 74 grams per person, which works out to roughly one medium stalk. Beyond that amount, its mannitol content rises into moderate and then high FODMAP territory. So the short answer is yes, celery fits a low FODMAP diet, but portion size matters more here than with many other vegetables.
Why Portion Size Is Critical With Celery
Celery is naturally rich in mannitol, a sugar alcohol that belongs to the “P” (polyols) group in the FODMAP acronym. Mannitol draws water into the intestines and ferments quickly in the gut, which can trigger bloating, gas, and diarrhea in people with IBS. The mannitol concentration in celery is high enough that Monash University, the lab that tests and rates FODMAP levels in foods, flags it as a food that requires careful portioning.
At roughly 74 grams (about one medium stalk), celery stays in the green “low FODMAP” zone. Go much beyond that and you move into moderate territory. Eat two or three full stalks in a sitting and you’re likely consuming a high FODMAP dose. This makes celery different from vegetables like carrots or bell peppers, where you’d have to eat unusually large amounts before FODMAPs become a concern.
One Stalk Looks Like in Practice
A single medium celery stalk, trimmed at both ends, typically weighs between 40 and 80 grams depending on the variety and how leafy it is. If you’re dicing celery into a salad or soup, 74 grams fills roughly half a cup of chopped pieces. That’s enough to add crunch and flavor to a dish without pushing your mannitol intake into risky territory.
A few practical tips for keeping portions in check: slice your celery and weigh it once so you have a visual reference, then eyeball it after that. If a recipe calls for two or three stalks and serves four people, the per-serving amount likely stays within the safe range. Problems tend to come from snacking, where it’s easy to munch through several stalks with peanut butter or hummus without thinking about it.
Celery Root Is a Different Story
Celeriac, the bulbous root vegetable sometimes sold as “celery root,” is a botanical relative of stalk celery but has a different FODMAP profile. It appears on some low FODMAP food lists without the same portion restrictions that stalk celery carries. If you enjoy the flavor of celery and want more flexibility with serving sizes, celeriac mashed or roasted can be a useful swap. It has a milder, slightly nutty taste compared to the sharper bite of celery stalks.
Stacking FODMAPs in a Meal
Even when you keep celery to one stalk, the mannitol it contains adds to the total FODMAP load of your meal. If you’re also eating mushrooms (another high-mannitol vegetable), sweet potato, or cauliflower in the same sitting, the combined polyol content can push you over your threshold. During the elimination phase of a low FODMAP diet, it helps to limit yourself to one moderate-mannitol food per meal rather than combining several.
During the reintroduction phase, celery actually makes a good test food for mannitol tolerance. Start with a quarter stalk, move to half, then a full stalk on separate days. If you tolerate a full stalk without symptoms, you know your gut handles at least a moderate dose of mannitol, which gives you useful information about other mannitol-containing foods too.
Low FODMAP Alternatives With Similar Crunch
If you find that even one stalk of celery bothers you, or you just want more volume without worrying about portion limits, several vegetables offer a similar texture.
- Cucumber: Low FODMAP in generous servings and works well in any raw application where you’d normally use celery, from salads to snack plates.
- Jicama: A crispy root vegetable with a mild, slightly sweet flavor. It stays low FODMAP in servings up to 75 grams and likely tolerates somewhat larger portions before reaching moderate levels.
- Water chestnuts: Low FODMAP at 75 grams, and because moderate fructan levels don’t appear until around 335 grams (about 3 cups), there’s a wide safe range. They work especially well in stir-fries and cooked dishes where you want that clean crunch.
Fennel bulb is another option worth trying. It has a mild anise flavor that pairs well in salads and slaws, and its low FODMAP serving size is generous enough for most recipes.
Cooking Changes Things Slightly
Cooking celery doesn’t eliminate its mannitol content, but it does change how much you’re likely to eat. Raw celery takes up a lot of volume on a plate, which can make it easier to track portions. Cooked celery shrinks significantly, so what looks like a small amount in a soup or stew might represent two or three raw stalks. If you’re adding celery to a slow cooker or braise, measure it before it goes in rather than estimating after cooking.
Celery leaves, often discarded, carry a similar FODMAP profile to the stalks. Using a few leaves as a garnish adds flavor without meaningful FODMAP content, but tossing large handfuls into a salad counts toward your total.