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All-Bran Cereal

High FODMAP

Tested serving

  • ½ cup (32.5g) High

All-Bran Cereal is High FODMAP at a ½ cup (32.5g) serving, driven mainly by its concentrated Fructans from wheat bran.

  • The Fructans run high here thanks to the wheat bran base, while GOS and Excess Fructose each sit at moderate levels, so this cereal stacks up several FODMAP sources at once at its ½ cup (32.5g) serving.
  • All-Bran is a very fiber-dense cereal, and that same bran that makes it filling is what carries the fructan load, which is why even a modest bowl reads as high.

If you love a fiber-rich breakfast, oats make a lovely low-FODMAP base you can build on with your favorite toppings.

Per ½ cup (32.5g): 0.76g fructans, 0.43g GOS, 0.18g excess fructose.

Why all-bran cereal is rated high

All-Bran Cereal is high FODMAP, and it is high for three reasons at once. The fructans from the wheat bran it is built from lead the way, and GOS and excess fructose ride along with them, so a single bowl brings three subgroups to breakfast rather than one. The published serving data tests it at ½ cup (32.5g) and that serving is already high. There is no smaller rung on record that comes in lower, so there is no tested amount of this cereal that sits in low territory, and treating it as a food to have a little of is not something the data supports.

What changes your risk

  • Three subgroups in one bowl Fructans, GOS and excess fructose all appear in the same ½ cup (32.5g), so this cereal stacks against itself before anything else on the table is counted. That is different from a food with a single subgroup where one swap elsewhere in the meal can offset it.
  • The rest of the breakfast Wheat toast and a wheat-based cereal in the same sitting pile fructans on fructans, and fruit juice or honey on top adds more excess fructose. A breakfast built around this cereal is rarely just this cereal.
  • Soaking in milk does not help Fructans and GOS are water-soluble, but leaching only removes them when the liquid is poured away, as it is when legumes are drained and rinsed or vegetables are boiled and the water tipped out. Cereal is eaten with its liquid, so nothing leaves the bowl.
  • Heat and time change nothing Toasting, warming or leaving the cereal to soften does not break FODMAPs down. The load in the bowl is the load in the box.
  • Read the ingredients on any bran-style cereal Cereals in this category often carry added inulin or chicory root fibre, dried fruit, honey or fruit juice concentrate, each of which adds to the subgroups already present rather than diluting them.

Swaps

Rolled oats are the honest replacement for the role this cereal plays, as porridge or soaked overnight, and they take the same toppings: raspberries, blueberries, strawberries, kiwi, a firm just-yellow banana, pumpkin seeds, walnuts, a little maple syrup, and lactose-free milk or yoghurt. Quinoa flakes, rice-based and corn-based gluten free cereals and buckwheat porridge cover the same breakfast spot. What does not work is another wheat bran or wheat biscuit cereal, muesli with dried fruit through it, anything with inulin or chicory root fibre listed, or a cereal sweetened with honey, agave syrup or high fructose corn syrup, since those repeat exactly the subgroups you were trying to leave behind.

How to lower the load

Since no tested serving of this cereal comes in low, the practical work is at the shelf rather than at the bowl: build the breakfast on oats or a rice-based cereal and keep this one out of the rotation during a strict phase. If you are shopping for a replacement, read the ingredients list rather than the front of the box, because bran, wheat, inulin, chicory root fibre, dried fruit and fruit juice concentrate are the words that matter and they sit in the small print. Buy plain oats or plain flakes and add the sweetness yourself with maple syrup and berries, which keeps control of what goes in. If a household shares one cereal cupboard, keeping your own box means the low FODMAP breakfast is not a decision you have to make while half awake.

Common questions

is all bran cereal low fodmap

No. All-Bran Cereal is high FODMAP at ½ cup (32.5g), which is the only serving the published data tests, and no smaller serving has been tested lower.

why is all bran high fodmap

It carries fructans from the wheat bran it is made from, plus GOS and excess fructose, all in the same ½ cup (32.5g) serving. Three subgroups in one bowl is what puts it in high territory.

what cereal can i eat instead of all bran

Rolled oats as porridge or overnight oats fill the same role, along with quinoa flakes and plain rice-based or corn-based gluten free cereals. Top them with berries, kiwi, pumpkin seeds, maple syrup and lactose-free milk.

can i have a smaller bowl of all bran on the elimination phase

The data tests only ½ cup (32.5g) and that serving is high, so there is no smaller tested amount to rely on. During a strict elimination phase an oat or rice-based breakfast is the safer plan, and reintroduction is something to work through with a dietitian.

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Learn more

What Are FODMAPs? A Plain-English Guide Low FODMAP Elimination Phase: A Week-by-Week Guide FODMAP Stacking: Why You Reacted to 'Safe' Foods How to Read Food Labels on Low FODMAP

Informational only, not medical advice. Individual tolerance varies. Talk to a healthcare professional or a dietitian for personal guidance.

References

  1. Fructan and free fructose content of common Australian vegetables and fruit. Muir et al. (2007), J. Agricultural and Food Chemistry 55(16):6619-6627.
  2. Measurement of short-chain carbohydrates in common Australian vegetables and fruits by HPLC. Muir et al. (2009), J. Agricultural and Food Chemistry 57(2):554-565.
  3. Quantification of fructans, galacto-oligosaccharides and other short-chain carbohydrates in processed grains and cereals. Biesiekierski et al. (2011), J. Human Nutrition and Dietetics 24(2):154-176.
  4. Dietary sorbitol and mannitol: food content and distinct absorption patterns. Yao et al. (2014), J. Human Nutrition and Dietetics 27(Suppl 2):263-275.
  5. FODMAPs: food composition, defining cutoff values and international application. Varney et al. (2017), J. Gastroenterology and Hepatology 32(Suppl 1):53-61. Supplies the low, moderate and high cutoffs used on this page.

Last reviewed September 22, 2026.