Rice does not have a glycemic index
Published GI values for rice run from the high 30s to the 90s depending on variety, parboiling and cooking time. That range is the finding — and it is why this site refuses to print one number.
Nothing here can diagnose you, and nothing here is a treatment plan. Blood glucose results are interpreted by a doctor alongside your history, your symptoms and a repeat test — a single number on a screen is not a diagnosis. If any reading concerns you, or if you feel unwell, see a doctor rather than a website.
Rice is the single most searched food in this whole subject in India, and it is the one where the internet is least honest. Every chart prints a number. The numbers disagree with each other wildly, and none of them carries the caveat that matters.
A systematic review of rice characteristics and processing methods gathered the published measurements. White polished rice came in between 64 and 93. Parboiled rice ran from 39 to 79. Basmati — routinely marketed as the low-GI rice — ranged from 50 to 96 across samples. Brown rice ran from 51 to 87.
Those ranges overlap almost completely. A particular parboiled rice can produce a lower glucose response than a particular basmati, and vice versa. The category on the packet does not settle it.
What actually moves the number
- Amylose content. Rice starch is a mixture of amylose and amylopectin. Higher-amylose varieties are digested more slowly. This varies by variety far more than by colour or price.
- Parboiling. Traditional parboiling changes the starch structure before milling. In the review, pressure-parboiled rice sat at the bottom of the range and quick-cooking parboiled rice near the top — the same word covering two very different processes.
- Cooking time. Longer boiling gelatinises more starch and generally raises the response. The same rice cooked for ten minutes and for twenty-five is not the same food.
- What is on the plate with it. Rice with dal, curd and vegetables does not behave like rice alone, which is what the test measures.
What this site publishes instead
The ranges, labelled as ranges, with the review cited. The rice table is on the glycemic index page. There is no SugarCheck value for "rice", "basmati rice" or "brown rice", because inventing one would mean picking a single study out of many and presenting it as a fact.
What is genuinely knowable about your plate is how much carbohydrate is on it, and that comes from composition tables rather than feeding studies. Every food page on this site gives carbohydrate per realistic Indian serving for exactly that reason.
What this page is not saying
It is not saying rice is fine, and it is not saying rice is dangerous. It is saying that the specific claim "rice has a GI of X" is not supported, and that decisions about what belongs on your plate — if you have diabetes, prediabetes, or a result you are worried about — should be made with a doctor or a registered dietitian who has seen your reports.
PeakForm is a training and accountability programme. It is not a treatment for diabetes or prediabetes, it is not a substitute for your doctor's advice, and nothing on this site should be acted on before speaking to one.
Common questions
What is the glycemic index of rice?
Is basmati rice low GI?
Is brown rice better than white rice for blood sugar?
More guides
General information only — NOT medical advice, and never a diagnosis. Only a doctor can interpret your results and diagnose or treat diabetes. If a reading concerns you, see a doctor rather than a website. Every threshold, equation and glycemic index value used on this site is listed with its publication on the data & method page.