Dark Rye Bread

TLDRLast updated 3 October 2026

Dark rye bread is high FODMAP at the listed 86 g portion, approximately two slices. GOS and fructans are high at this amount. This entry does not provide a low-portion reference.

Serving sizes for dark rye bread

The available reference is 86 g, about two slices, rated high. No low or moderate serving is listed for this exact dark rye entry.

Avoid
2 slicesabout 86 g

Tested serving sizes

Tested serving sizes for Dark Rye Bread and their Gut Friendly rating
ServingAmountMain FODMAPRating
2 slices86 gFructans 0.3 gAvoid

Breakdown for 2 slices

0.2gFructose
0gLactose
0.3gFructans
0.3gGOS
0gSorbitol
0gMannitol
2 slicesabout 86 g

Is dark rye bread low FODMAP?

The high rating is specific to this dark rye loaf and its 86 g serving. Fructose, lactose, mannitol and sorbitol remain low in that reference. A single high amount cannot identify a low threshold below it, so this page does not calculate a smaller green serving from the two-slice weight.

Dark Rye Bread and IBS: what to know

For dark rye bread and IBS, start by distinguishing the exact bread from other rye products. Colour alone is not enough to select a guide. If you record meals, include the product name, portion and accompaniments so a dark rye sandwich can be distinguished from pumpernickel or sourdough.

Gut-friendly ways to eat dark rye bread

If you are comparing bread options, read the separate pumpernickel guide for its own measured references. Light rye sourdough is another distinct preparation. Neither loaf's amount should be copied onto dark rye. When weighing a sandwich, measure the bread before adding spreads or fillings.

Frequently asked questions

Are two slices of dark rye low FODMAP?

The two-slice reference weighs 86 g and is high for GOS and fructans. It is not a low-portion reference.

Would one slice of dark rye be low?

This entry does not supply a smaller amount with a low rating. Halving the listed weight does not establish one.

Is dark rye the same as pumpernickel?

The catalogue separates these breads. Use the pumpernickel guide only when that preparation matches what you are eating.

Are all FODMAP groups high in dark rye?

No. GOS and fructans are high at the listed serving; the remaining four groups are low in that reference.

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Sources and editorial notes

Published and maintained by Gut Friendly. This guide has not been independently reviewed by a dietitian. Serving information comes from our food catalogue. Where references are listed, they explain the research and preparation differences. Check the original source for current portions.

Gut Friendly provides general information, not medical advice.