Oat bran, cooked & Diabetes
Low glycemic impact for the stated serving. Glycemic load of 5.9 per 100g.
✅ Nutrition data verified · GL 5.9/100g · 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
Key Nutrition Data
Alternatives to Consider
🍚 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 →🍚 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 →🍚 Vital wheat gluten
GL 8.8/100g — Low GL
Rated diabetes-friendly — lower glycemic impact than your current selection.
Vital wheat gluten & diabetes →Practical Guidance
💡 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.
💡 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 Over Glycemic Index
GL accounts for both the speed AND amount of carbohydrate, making it more practical for real-world eating than GI alone.
Glycemic Load by Serving Size
| Portion | Weight | Carbs | Glycemic Load | Verdict |
|---|---|---|---|---|
| ½ Serving | 110g | 12.6g | 6.5 | Friendly |
| Standard Serving | 219g | 25.1g | 12.9 | Moderate |
| Restaurant Portion | 438g | 50.1g | 25.8 | 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.
Questions People Ask
What do the numbers say about Oat bran and blood sugar?
Oat bran scores a GL of 5.9 on the glycemic scale. For context, ≤10 is considered low. This is general dietary information and should not replace personalized guidance from your care team.
What GL value does Oat bran carry?
Per 100g, Oat bran has a GL of 5.9. This means one standard serving (1 cup cooked) provides approximately 12.9 GL — which is low.
What happens to blood sugar after eating Oat bran?
After eating Oat bran, you can expect a low blood sugar response. The GL of 5.9 means a gentle rise. This can vary based on what else you eat with it.
Is the GI value accurate?
The GI of 66.6 for Oat bran 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.
References & Data 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, 219.0g) = 5.9 × 219.0 ÷ 100 = 12.9
Nutrition Data: USDA FoodData Central, SR Legacy Release (April 2018). FDC ID: 168873. 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. “Oat bran, cooked — Glycemic Load & Diabetes Reference.” GlycemicWise, July 2026. https://glycemicwise.com/foods/oat-bran-cooked/
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.