Dinner
Baked Cod with Cherry Tomatoes and Olives
30 minMedium
Potato
Vegetables · Root Vegetables
TLDRLast updated 3 September 2026
Yes. Potato is low FODMAP at the tested serve of one medium potato (150 g), which carries just 0.02 g of fructans and nothing from any other FODMAP group. That trace sits far below the 0.1 g moderate threshold, making potato one of the most reliable staple carbohydrates for IBS.
Last updated 3 September 2026Serving sizes for potato
The tested serve is one medium potato (150 g), rated green.
1 potatoabout 150 g
Tested serving sizes
| Serving | Amount | Main FODMAP | Rating |
|---|---|---|---|
| 1 medium potato | 150 g | Fructans 0.02 g |
Breakdown for 1 potato
0gFructose
0gLactose
0.02gFructans
0gGOS
0gSorbitol
0gMannitol
1 potatoabout 150 g
Is potato low FODMAP?
Potato has one of the cleanest profiles among starchy vegetables. At the tested 150 g serve the only FODMAP present is fructans at 0.02 g, a fifth of the 0.1 g moderate threshold, with fructose, lactose, GOS, sorbitol and mannitol all at zero. Notably, potato shows none of the mannitol that pushes sweet potato to amber at larger portions, so when you want a generous plate of starch, plain potato is the safer bet of the two. Peeled or unpeeled makes no difference to the rating.
Potato and IBS: what to know
Most people with IBS tolerate potato very well, and it earns its place as a bland, settling food on rough gut days. When potato dishes cause trouble, the preparation is the usual suspect: hot chips and creamy gratins are high in fat, which can speed up gut contractions and trigger symptoms without any FODMAPs involved. Cooked-and-cooled potato, as in potato salad, also forms resistant starch, which feeds gut bacteria and leaves some people gassier than freshly cooked mash.
Gut-friendly ways to eat potato
Roast, boil or bake potatoes freely within the tested serve, and build mash with butter and lactose-free milk rather than regular milk. Be wary of what lands on top: commercial gravies often start from onion-heavy stock, so use a low FODMAP stock or pan juices instead. For variety across the week, rotate potato with carrot and modest serves of sweet potato.
Recipes with potato
Frequently asked questions
Can I eat potatoes with IBS?
Yes. One medium potato (150 g) is rated green, with only a trace 0.02 g of fructans and no other FODMAP groups detected. Potatoes are a dependable base for IBS-friendly meals; problems usually come from toppings and cooking styles, such as onion gravy, creamy sauces or deep frying, not the potato.
Are chips (french fries) low FODMAP?
The potato inside them is: a 150 g serve rates green with almost no FODMAPs. Plain fries are generally a low FODMAP order, but their high fat content can still trigger IBS symptoms in some people, and seasoned or battered versions may add onion or garlic powder. Plain and salted is the safer choice.
Is mashed potato low FODMAP?
It can be. The potato itself rates green at 150 g, so the rating of your mash depends on the dairy. Butter is fine in normal amounts, but generous regular milk or cream adds lactose. Mash made with lactose-free milk keeps the whole bowl low FODMAP.
Which is lower FODMAP, potato or sweet potato?
Potato. At its 150 g tested serve, potato shows just 0.02 g of fructans and no mannitol at all. Sweet potato is green only at 75 g and rates amber at 150 g, because it carries mannitol, GOS and fructans that build with portion size. If you want a big serving, choose potato.
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