Almonds
Nuts & Seeds · Tree Nuts
Almonds are low FODMAP in small amounts: 10 almonds, about 12 g, rate green. Double that to 20 almonds (25 g) and the rating moves to amber, because the GOS content climbs from 0.08 g to 0.17 g. So almonds aren’t off the menu with IBS, they’re a portion-counting food.
Last updated 3 September 2026Serving sizes for almonds
A green serve is 10 almonds, about 12 g. At 20 almonds (25 g) the rating is amber.
Tested serving sizes
| Serving | Amount | Main FODMAP | Rating |
|---|---|---|---|
| 10 almonds | 12 g | GOS 0.08 g | |
| 20 almonds | 25 g | GOS 0.17 g |
Breakdown for 9.6 almonds
Is almonds low FODMAP?
The FODMAP in almonds is GOS (galacto-oligosaccharides), the same group found in legumes. At 10 almonds there’s 0.08 g of GOS, just under the 0.1 g threshold where a portion starts to rate moderate. At 20 almonds the GOS reaches 0.17 g, clearly over that line, so the serving rates amber. There’s also a trace of fructans (0.03 g at the green serve), but it’s the GOS that drives the rating. The gap between green and amber is small here, which is why counting matters more than it does for most nuts.
Almonds and IBS: what to know
GOS isn’t absorbed by anyone; gut bacteria ferment it, and people with IBS tend to feel that fermentation more. Because almonds sit so close to the threshold, tolerance is often about the day’s total rather than one snack: almonds at morning tea plus almond meal in baking plus a handful on a salad can quietly add up. During elimination, keep to the 10-nut serve. In reintroduction, almonds are a convenient way to test your personal GOS tolerance in small steps.
Gut-friendly ways to eat almonds
Ten almonds is more useful than it sounds: scatter them over porridge, a salad, or Greek yoghurt rather than snacking from the bag, where 20 disappear fast. If you want a bigger nut fix, macadamias, walnuts and pecans all rate green at their tested serves and make roomier snacks. Almond milk is typically made from a small proportion of almonds, and almond milk has its own green-rated entry in the guide.
Frequently asked questions
How many almonds can I eat with IBS?
Ten almonds (about 12 g) is the green-rated serve, with 0.08 g of GOS. At 20 almonds (25 g) the GOS reaches 0.17 g and the rating is amber, meaning caution rather than clear. During the elimination phase, count out 10 and stop there.
Why are almonds high FODMAP in larger serves?
Almonds contain GOS, a fermentable carbohydrate no one absorbs in the small intestine. The amount in 10 almonds (0.08 g) sits just under the 0.1 g moderate threshold, so doubling the portion pushes it over: 20 almonds carry 0.17 g of GOS and rate amber. It’s a dose story, not an ingredient story.
Is almond milk low FODMAP if almonds are portion-limited?
Yes. Almond milk is rated green at its tested serve in our guide. Commercial almond milk is mostly water with a small percentage of almonds, so a glass delivers far less GOS than a handful of whole nuts. It’s one of the easier plant milks to fit into a low FODMAP day.
Which nuts are lowest FODMAP?
At their tested serves, macadamias, walnuts, pecans, brazil nuts and peanuts all rate green in our guide, and several allow more generous portions than almonds’ 10-nut serve. Cashews and pistachios sit at the other end, rating amber at their first tested serve, so almonds fall somewhere in the middle.
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