Farro is not low FODMAP in typical serving sizes. It contains fructans, a type of fermentable carbohydrate that triggers symptoms in many people with irritable bowel syndrome. However, very small portions may be tolerable depending on your individual sensitivity, making portion control the key factor.
Why Farro Is High in FODMAPs
Farro is an ancient wheat grain (technically emmer wheat), and like all wheat-based grains, it contains fructans. Fructans are short-chain carbohydrates that your small intestine can’t fully absorb. Instead, they travel to the large intestine where gut bacteria ferment them, producing gas and drawing water into the bowel. For people following a low FODMAP diet, fructans are one of the primary triggers for bloating, cramping, and diarrhea.
Research measuring the FODMAP content of emmer wheat flour found total FODMAP levels of about 1.24 grams per 100 grams of dry weight. Fructans and raffinose were the only FODMAPs detected in wheat flour, meaning fructans are the sole concern with farro. That level is enough to cause symptoms for most people with FODMAP sensitivity at a standard serving size.
How Farro Compares to Other Grains
If you’ve heard that ancient grains are easier on the gut than modern wheat, the reality is more nuanced. A study published in the Journal of Functional Foods measured FODMAP levels across ancient and modern wheat varieties and found that the differences were smaller than expected. Emmer (farro) flour actually had the lowest total FODMAP content among the wheat species tested, at roughly 1.24 grams per 100 grams, while einkorn had the highest at about 2.01 grams per 100 grams. Modern bread wheat and spelt fell somewhere in between, with no significant difference between the two.
So farro does contain slightly fewer fructans than some other wheat varieties, but not enough to make it safe in normal portions during the elimination phase of a low FODMAP diet. The difference between 1.2 and 2.0 grams per 100 grams matters less than you might think when the threshold for triggering symptoms can be quite low.
Grains that are genuinely low FODMAP include rice, quinoa, oats (in moderate portions), and corn. These contain little to no fructans and are reliable staples during the elimination phase.
Can You Eat a Small Amount?
Portion size determines whether many foods cross the FODMAP threshold. With farro, a very small serving of around one to two tablespoons of cooked grain may be tolerable for some people during the reintroduction phase. But a full bowl of farro as a side dish or grain base will almost certainly exceed the fructan limit.
For context, a quarter cup of dry farro provides about 140 calories, 6 grams of protein, and 3 grams of fiber. That’s a nutritionally dense grain, which is part of why it’s popular. But that same quarter cup, once cooked, represents a meaningful dose of fructans. During the strict elimination phase of a low FODMAP diet, most dietitians recommend avoiding farro entirely rather than trying to manage tiny portions.
During the reintroduction phase, you can test farro in small amounts to gauge your personal tolerance. Some people with IBS handle moderate fructan levels without major symptoms, while others react to even trace amounts. Your response will help determine whether farro can eventually return to your diet in controlled portions.
Fructans vs. Gluten: A Common Mix-Up
Many people who feel better after cutting out wheat assume gluten is the problem. But a growing body of research suggests that for people without celiac disease, fructans may be the real culprit. Farro contains both gluten and fructans, so eliminating it removes both at once, making it hard to tell which one was causing your symptoms.
This distinction matters because gluten-free products aren’t automatically low FODMAP, and low FODMAP grains aren’t automatically gluten-free. If you react to farro, wheat bread, and pasta but feel fine eating sourdough (where fermentation breaks down some fructans), that’s a clue pointing toward fructan sensitivity rather than gluten sensitivity. Research in the World Journal of Gastroenterology has noted that non-celiac gluten sensitivity and FODMAP sensitivity are frequently confused, and that gluten itself may only be a cofactor or even a confounder when trying to pinpoint the source of gut symptoms.
If you have celiac disease, farro is off the table regardless of FODMAPs. It is a wheat species and contains gluten.
Better Grain Swaps on a Low FODMAP Diet
If you love farro for its chewy texture and nutty flavor, a few alternatives can fill a similar role in meals without the fructan load:
- Quinoa: Similar protein content, naturally gluten-free, and low FODMAP in servings up to about one cup cooked.
- Rice: White and brown rice are both low FODMAP with no portion restrictions. Brown rice offers a chewier texture closer to farro.
- Millet: A mild, slightly nutty grain that works well in grain bowls and salads.
- Buckwheat: Despite its name, not related to wheat. Low FODMAP and gluten-free with a hearty, earthy flavor.
These grains won’t replicate farro’s exact taste, but they deliver similar satisfaction in grain salads, soups, and side dishes without putting your gut at risk during the elimination phase. Once you’ve completed reintroduction testing and know your personal fructan threshold, you can experiment with adding small amounts of farro back into meals that also contain a low FODMAP grain base.