Dinner
Maple Soy Glazed Salmon
25 minEasy
Green Beans (string beans)
Vegetables · Other Vegetables
TLDRLast updated 3 September 2026
The name is misleading. Green beans are eaten as an immature pod rather than a dried seed, and the tested ¾ cup serve of 75 g is rated green on 0.05 g of fructans with GOS at zero, while half a cup of canned chickpeas is rated red on 0.36 g of GOS. Anyone who has learned to fear legumes can put string beans back on the plate.
Last updated 3 September 2026Serving sizes for green beans (string beans)
The tested serve is ¾ cup (75 g), rated green with only 0.05 g of fructans.
0.75 cupsabout 75 g
Tested serving sizes
| Serving | Amount | Main FODMAP | Rating |
|---|---|---|---|
| 3/4 cup | 75 g | Fructans 0.05 g |
Breakdown for 0.75 cups
0gFructose
0gLactose
0.05gFructans
0gGOS
0gSorbitol
0gMannitol
0.75 cupsabout 75 g
Is green beans (string beans) low FODMAP?
Green beans carry one FODMAP group, in a trace amount: 0.05 g of fructans in the tested cup, half the 0.1 g level where fructans begin to count, with excess fructose, lactose, GOS, sorbitol and mannitol all at zero. That zero for GOS is what separates a pod from a pulse. GOS accumulates as a legume seed matures and dries, which is why canned chickpeas already hold 0.18 g of it in a quarter cup, and a green bean is picked long before its seeds reach that stage.
Green Beans (string beans) and IBS: what to know
What makes green beans useful is the size of the serve rather than the size of the number. Three-quarters of a cup is a normal side, which is rare company among green vegetables: the same 75 g of asparagus is rated red on 0.25 g of fructans, and cauliflower turns red at 100 g. Only one serve has been tested here, so a very large pile is not covered by the data, but at dinner-plate portions there is nothing to ration. If a bean dish has ever disagreed with you, the garlic butter or fried onion around it is the likelier cause.
Gut-friendly ways to eat green beans (string beans)
Green beans are the workhorse for the weeks when your safe list is at its shortest. They take every treatment the higher FODMAP greens do: blanched and dressed with lemon, roasted in olive oil until they blister, tossed through a stir-fry, or braised soft in tomato and herbs. Because they hold their shape, they also bulk out a plate where you are keeping broccoli or sprouts to a small serve. Frozen beans cook straight from the freezer, which is what keeps them in the weekly rotation.
Recipes with green beans (string beans)
Frequently asked questions
Are green beans high FODMAP like other beans?
No. Green beans are harvested as a pod and show no GOS at all at the tested serve, while dried and canned legumes carry GOS by design. That is why three-quarters of a cup of green beans is rated green and half a cup of canned chickpeas is rated red. The word bean is doing a lot of unhelpful work here.
How many green beans can I eat on a low FODMAP diet?
The tested amount is ¾ cup, about 75 g, rated green on a trace of fructans. Larger serves have not been measured, so treat a very big pile as untested rather than approved. A normal side sits comfortably inside what the data covers, which is more than most green vegetables can offer and is the whole reason they are worth keeping in stock.
Are canned or frozen green beans low FODMAP?
The bean itself is the same food, so plain frozen or canned beans are treated like fresh ones at the same weight. The label is where the risk sits: seasoned and casserole-style products often carry onion or garlic powder, and a cream-of-something sauce brings its own problems. Drain and rinse canned beans, then dress them yourself with oil and lemon.
Are green beans OK during the FODMAP elimination phase?
Yes, and they earn their keep. Elimination is when the vegetable list gets thin and almost everything arrives with a portion warning, and green beans are one of the few things you can serve at a normal side-dish size without weighing them. They also freeze, travel and reheat well, which matters when every meal is being cooked from scratch.
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