Yes, chia seeds are low FODMAP at 2 tablespoons (about 24 g). Go much higher than that, and they stop being low FODMAP, which is where most chia pudding recipes catch people out.
When I first started stirring chia seeds into my morning oatmeal while focusing on gut health, I was admittedly skeptical of their gelatinous texture. Within about a week, though, I noticed a distinct and comfortable shift; my digestion felt significantly smoother and more consistent throughout the day without any of the usual mid-morning bloating.
As a certified nutritionist, I like chia seeds because they add fibre and healthy fats to a low FODMAP day. The trick is the portion, so here is how to use them safely.
Are chia seeds low FODMAP?
Yes, in the right amount. Monash University, which developed the low FODMAP diet, lists a 2-tablespoon serving of chia seeds as low in FODMAPs and tolerated by most people with IBS. The Canadian Digestive Health Foundation and Verywell Health list the same amount.
| Amount of chia seeds | FODMAP level |
|---|---|
| 2 tablespoons (about 24 g) | Low FODMAP |
| Around 4 tablespoons | High FODMAP |
Check the Monash FODMAP app for the latest serving size, since amounts can be updated when foods are retested.
Are chia seeds high or low FODMAP?
Both, depending on how much you eat. That is common with low FODMAP foods: the food is fine in a small portion and becomes high FODMAP in a large one. With chia, the jump from low to high is not very big, so it is worth measuring the seeds with a spoon.
Is chia seed pudding low FODMAP?
It can be, but check the recipe. Many chia pudding and chia bowl recipes use far more than 2 tablespoons of seeds per serving, which makes them a high-FODMAP serve. This is the most common mistake I see.
To keep it low FODMAP:
- Use 2 tablespoons of chia seeds or less per person.
- Use a low FODMAP milk, such as lactose-free milk or a suitable plant milk. Check the label for added sweeteners and flavourings.
- Top with a low FODMAP fruit in a measured portion, such as strawberries.
Monash has its own strawberry chia pudding recipe where the full recipe serves four, and one serving is low FODMAP. That tells you how little chia goes into each portion.
Are soaked, ground, black or white chia seeds low FODMAP?
I could not find separate serving sizes for soaked, ground, black or white chia, so here is how I handle each:
- Soaked chia seeds: the seeds swell in liquid, so measure the dry seeds before you soak them. Two tablespoons of dry seeds is the amount that counts.
- Ground chia seeds: use the same measured amount and check the Monash app for any separate listing.
- Black and white chia seeds: these are colour varieties of the same seed. I did not find a different serving size for white, so use the same 2-tbsp limit.
Are chia seeds and flax seeds low FODMAP?
Both can fit a low FODMAP diet in measured amounts. Chia is listed at 2 tablespoons. Ground flax is listed at about 1 tablespoon. Do not combine large portions of both in one sitting, since FODMAPs can add up across a meal.
Are oats and chia seeds low FODMAP?
Oats are low FODMAP at about ½ cup or less, and chia at 2 tablespoons, but each has its own limit. If you want both in one bowl, such as overnight oats, keep each at or below its measured serve and see how you feel, since eating two foods near their limit at the same time can add up.
Are chia seeds ok for IBS?
Many people with IBS tolerate them, and some doctors suggest chia and flax for constipation-predominant IBS. But Monash also notes that occasionally people react to chia seeds and that this is the exception, not the rule.
Chia seeds are high in soluble fibre and absorb a lot of water, which is why they form that gel. A few things help:
- Start small. Try 1 teaspoon for a few days, then work up to 1 tablespoon and then 2.
- Drink enough water. Chia absorbs liquid, so eat it soaked or with plenty of fluid.
- Pay attention to gas and bloating. Chia is low FODMAP, but fibre can still cause gas in some people, since gut bacteria ferment soluble fibre.
I always start clients off with just one teaspoon of chia seeds per day stirred into plenty of liquid, letting their digestion adjust for a week before gradually bumping it up to a full tablespoon.
Do chia seeds harden stool? Chia can help some people with constipation when eaten with enough fluid, but without enough water, some people feel more blocked. If constipation is a long-term problem, talk to your doctor or dietitian.
Are chia seeds low in histamine?
This post covers FODMAPs only. FODMAP and histamine are different things, and a food can fit one diet and not the other. If you also follow a low histamine diet, check a trusted low histamine food list.
Frequently asked questions
Are chia seeds ok for low FODMAP? Yes, in a 2-tbsp serving.
How many chia seeds can I have on a low FODMAP diet? Up to 2 tablespoons. Around 4 tablespoons is high FODMAP.
Do chia seeds feed gut bacteria? They contain soluble fibre, which gut bacteria can ferment. That is part of why chia can cause gas in some people.
What is a good low FODMAP chia seed recipe? A small chia pudding made with 2 tablespoons of seeds per person is the easiest place to start.
The short version
Chia seeds are low FODMAP at 2 tablespoons and high FODMAP at around 4. Measure dry seeds, start with a small amount, drink plenty of water, and watch chia pudding recipes that use more than 2 tablespoons per serve. Check the Monash FODMAP app for the latest serving size.
This article is for general information and is not medical advice. If you are following the low FODMAP diet for IBS or SIBO, work with a dietitian or your doctor, especially during reintroduction.
More low FODMAP foods