Rye flour, dark & Diabetes
High glycemic impact — occasional choice only. Glycemic load of 29.9 per 100g.
✅ Nutrition data verified · GL 29.9/100g · GI 66.6 · TIER 3 ⚠️ GI: Subcategory Estimate
GI estimated from food subcategory average — not directly tested on this food. [1] [3]
How This Food Affects Blood Sugar
Nutrition Profile
Tips for Enjoying It
💡 Cool & Reheat
Cooked-and-cooled starches form resistant starch, which resists digestion and reduces the glycemic response. Refrigerate and reheat before eating — the effect persists.
💡 Half Portion, Full Satisfaction
A half serving significantly reduces the glycemic load. Use it as a side, not the main event, and bulk up your plate with vegetables.
💡 Choose Lower-GI Varieties
Parboiled (converted) grains and certain varieties have lower GI due to differences in starch structure. Check individual food pages for specific GI values.
💡 Check Your Own Response
Individual blood sugar responses vary. Use a glucose meter to understand how this food affects you personally.
Glycemic Load by Serving Size
| Portion | Weight | Carbs | Glycemic Load | Verdict |
|---|---|---|---|---|
| ½ Serving | 64g | 43.9g | 19.1 | High |
| Standard Serving | 128g | 87.8g | 38.3 | High |
| Restaurant Portion | 256g | 175.7g | 76.5 | High |
GL ≤10 = Low (Friendly) · 11–19 = Moderate · ≥20 = High (Limit).
The page-level verdict is based on GL per 100g; this table shows how portion size changes the actual GL you get.
Foods to Try Instead
🍚 Corn bran, crude
GL 4.4/100g — Low GL
Fiber 79.0g/100g. Rated diabetes-friendly — lower glycemic impact than your current selection.
Corn bran, crude & diabetes →🍚 Oat bran, cooked
GL 5.9/100g — Low GL
Fiber 2.6g/100g. Rated diabetes-friendly — lower glycemic impact than your current selection.
Oat bran, cooked & diabetes →🍚 Hominy, canned, white
GL 7.8/100g — Low GL
Fiber 2.5g/100g. Rated diabetes-friendly — lower glycemic impact than your current selection.
Hominy, canned, white & diabetes →🍚 Hominy, canned, yellow
GL 7.8/100g — Low GL
Fiber 2.5g/100g. Rated diabetes-friendly — lower glycemic impact than your current selection.
Hominy, canned, yellow & diabetes →Quick Answers
Is Rye flour dark good for diabetes?
Rye flour dark is rated 'limit' for diabetes (GL 29.9). This doesn't mean never — it means be strategic. Tiny portions, paired with protein and fiber, can reduce the impact.
What GL value does Rye flour dark carry?
GL = 29.9 per 100g for Rye flour dark. For context: low GL is ≤10, moderate is 11–19, and high is ≥20. Rye flour dark falls into the High category.
How does Rye flour dark affect blood sugar?
The primary way Rye flour dark affects blood sugar is through its carbohydrate content (68.6g/100g). With a GI of 66.6 (medium) and limited fiber, this produces an overall GL of 29.9 (High).
Is the GI value accurate?
The GI of 66.6 for Rye flour dark is estimated (Tier 3), not directly ISO-tested on this specific food. It is based on the weighted average GI of foods in the Cereal Grains and Pasta category from the International GI Tables (Atkinson et al., 2021). Actual GI may vary by variety, ripeness, cooking method, and individual response. We display estimated values with full transparency so you can make informed decisions.
Can portion control make this food work?
Yes — half a standard serving of Rye flour dark reduces the glycemic load substantially. At GL 29.9 per 100g this is a dense source, but a half portion makes a meaningful difference. The key is mindfulness: use it as a side dish, not the main event, and fill most of your plate with non-starchy vegetables and lean protein.
Methodology & Sources
Data Tier: TIER 3 — estimated from category average
Glycemic Index (GI): 66.6 — subcategory_avg:Cereal Grains and Pasta. Source: International GI Tables (Atkinson, Brand-Miller et al., Diabetes Care, 2021). University of Sydney GI Research Service.
GL (per serving, 128.0g) = 29.9 × 128.0 ÷ 100 = 38.3
Nutrition Data: USDA FoodData Central, SR Legacy Release (April 2018). FDC ID: 168885. Data are in the public domain (CC0 1.0).
GL Classification: ≤10 = Low (Low GL), 11–19 = Moderate (Eat in Moderation), ≥20 = High (Limit). Based on University of Sydney Glycemic Index Foundation classification.
⚠️ GI value is estimated, not directly ISO-tested on this specific food. Actual GI may vary by variety, cooking method, and individual glycemic response.
Cite this page: GlycemicWise. “Rye flour, dark — Glycemic Load & Diabetes Reference.” GlycemicWise, July 2026. https://glycemicwise.com/foods/rye-flour-dark/
Dietary reference — not medical advice. This page provides evidence-based dietary reference information for general educational purposes. It is not a substitute for professional medical advice, diagnosis, or treatment. Individual blood sugar responses vary significantly. Always check your blood glucose to understand your personal response to foods, and talk to your doctor or a registered dietitian before changing your diet. Data sources are cited above and publicly available from the USDA and the University of Sydney Glycemic Index Research Service.