Is Rye bread Low FODMAP?
Rye bread is moderate FODMAP — it can fit a low-FODMAP diet, but only up to ½ slice (24 g). Larger servings are likely to trigger symptoms.
Serving thresholds
| Serving | FODMAP level | Data quality |
|---|---|---|
| ½ slice (24 g) | Low | Lab-tested |
| 2 slices (96 g) | High | Lab-tested |
Thresholds are per sitting. FODMAP load stacks across a meal — two “low” servings of different foods can still add up.
Which FODMAPs are in rye bread?
During reintroduction, test the group above one at a time — tolerating rye bread depends on your personal threshold for Fructans, not on the food itself.
Good to know
Rye bread is high in fructans; sourdough variants are tolerated in small slices.
Where these numbers come from
- Peer-reviewed paper: Biesiekierski JR et al. (2011) Quantification of fructans, galacto-oligosaccharides and other short-chain carbohydrates in processed grains and cereals. J Hum Nutr Diet 24(2):154–76.
- Peer-reviewed paper: Varney J et al. (2017) FODMAPs: food composition, defining cutoff values and international application. J Gastroenterol Hepatol 32(S1):53–61.
Phase derives serving thresholds from published research and food-composition data so every number is auditable.
Low-FODMAP swaps for rye bread
Craving rye bread during elimination? These low-FODMAP picks from the same food group let you keep the dish without the trigger.
Related foods
This page is for informational purposes only and is not medical advice. FODMAP content varies with ripeness, processing, and brand. Always work with your doctor or a registered dietitian on dietary changes for IBS.