Glycaemic Index of Common Asian Foods: Rice, Noodles, Roti and Better Choices

Rice, noodles, roti and starchy breakfasts are everyday foods across Asia. Their effect on blood glucose is not fixed: variety, processing, cooking, portion size and the rest of the meal all matter.

This guide uses GI ranges as a practical starting point, not a scorecard for whether a food is healthy. Regional recipes and brands may not have been tested, so individual responses can differ. [1,2]

Key point: use GI to compare similar carbohydrate foods, then consider the amount eaten, fibre, protein, vegetables and your own glucose response.

What GI and glycaemic load tell you

Glycaemic index (GI) ranks carbohydrate foods by their rise in blood glucose under standard test conditions: low is 55 or below, medium 56–69 and high 70 or above. Glycaemic load (GL) also considers the available carbohydrate in the portion, so a large serving can matter even when GI is lower. [1,3,4]

GI does not measure vitamins, minerals, sodium, fat or overall food quality. The American Diabetes Association describes the evidence as complex and recommends individualised nutrition care rather than one universal eating pattern. [3]

Common Asian carbohydrate foods

These are usual tendencies from international and non-Western GI compilations, not guaranteed values for every product. [1,2]

Food or group	Usual GI tendency	Practical interpretation
Jasmine, glutinous or very soft white rice	Usually high	Choose a smaller rice portion and add vegetables, pulses, tofu, fish, eggs or lean meat.
Basmati or parboiled rice	Often lower; variable	Useful alternatives, but cultivar, brand and cooking still change the result.
Brown, red or black rice	Variable	More fibre and micronutrients do not guarantee a low GI; portion still counts.
Congee, jook or khao tom	Often medium–high; variable	Long cooking softens starch. Add protein and vegetables rather than relying on rice alone.
Rice noodles, kway teow or rice vermicelli	Variable	Thickness, starch source and cooking differ; noodles are not automatically lower than rice.
Soba, mung-bean vermicelli or firm wheat noodles	Often low–medium; variable	Check the main ingredient and avoid overcooking; some products contain mostly refined wheat or rice.
Chapati or whole-wheat roti	Often low–medium	Wholemeal flour and modest portions may help, but thickness and recipe matter.
Roti canai, prata, paratha or white buns	Often medium–high	Added fat may slow the rise but increases energy; a lower response does not make a dish healthier.
Idli, dosa, appam, poha or upma	Variable	Grain, grinding, fermentation, oil and serving size can move the response in either direction.
Dal, chickpeas, mung beans and other pulses	Usually low	Their fibre and protein make them useful partners for rice, bread or noodles.

Why the same food can behave differently

Variety, processing and cooking

Starch structure differs between rice cultivars and manufactured noodles. Grinding, puffing and cooking until very soft usually make starch easier to digest. A 2025 systematic review found that rice variety and cooking method materially changed GI; evidence for specific techniques was not yet strong enough for universal clinical rules. [5]

Cooling and reheating rice

Cooling can form some resistant starch, and studies in healthy adults suggest a lower glycaemic response after safe cooling and reheating. The effect may be modest and does not cancel a large portion. Cool rice quickly, refrigerate it, and reheat only once until steaming hot throughout. [5,6]

Mixed meals and portions

Protein, fat, fibre, acidity and food order can alter how quickly a mixed meal is absorbed. A practical plate is half non-starchy vegetables, one quarter protein and one quarter carbohydrate, adjusted for appetite, culture and clinical advice.

Build a more glucose-friendly Asian meal

Reduce the staple portion slightly before removing a familiar food entirely.

Pair rice, noodles or roti with dal, beans, tofu, eggs, fish, chicken or lean meat and plenty of vegetables.

Choose water or an unsweetened drink instead of sweet tea, bubble tea, soft drinks or juice.

Compare like with like: a tested lower-GI rice may help, but labels and local cooking methods still matter.

For the wider prevention plan, see Blood Sugar and Diabetes Prevention; for meal structure, see Insulin Resistance: Causes, Diet and Practical Fixes.

Safety and when to seek medical care

If you use insulin or a sulfonylurea, major changes in carbohydrate amount can cause hypoglycaemia; agree monitoring and medication adjustments with your diabetes team. Pregnancy, gestational diabetes, childhood, kidney disease and eating disorders also need individual advice. Laboratory targets and treatment decisions vary.

Seek urgent care for severe confusion, seizure, unconsciousness, persistent vomiting, marked dehydration or breathing difficulty. Do not stop diabetes medicine or use GI values to calculate insulin without personalised guidance.

Regular movement can also influence post-meal glucose; see Exercise and Blood Sugar. If fasting changes your meal timing, use the separate Intermittent Fasting and Blood Sugar guide.

Key takeaways

GI is a comparison tool, not a complete judgement of food quality.
Portion size and the whole meal often matter as much as the GI band.
Choose realistic swaps and use home glucose data only within your agreed care plan.

Medical disclaimer: This article provides general educational information. It is not a diagnosis, personalised meal plan, insulin-dosing method or substitute for advice from a qualified healthcare professional. Do not start, stop or change diabetes treatment based only on this article.

References

Atkinson FS, Brand-Miller JC, Foster-Powell K, et al. International tables of glycemic index and glycemic load values 2021: a systematic review (2021). PubMed
Henry CJ, Quek RYC, Kaur B, et al. A glycaemic index compendium of non-western foods (2021). PubMed
American Diabetes Association. Facilitating Positive Health Behaviors and Well-being to Improve Health Outcomes: Standards of Care in Diabetes—2026 (2026). Diabetes Care
University of Sydney Glycemic Index Research Service. Frequently asked questions and GI database (accessed 2026). Glycemic Index
Sekarmuti A, Rimbawan, Nasution Z. Effects of Cooking Techniques on the Nutritional Profile, Glycemic Index, and Sensory Evaluation of Rice: A Systematic Review (2025). PubMed
UK Food Standards Agency. Cooking your food: using and reheating leftovers (updated 2024). Food Standards Agency