Does brown rice raise your blood sugar level?




Question

Does brown rice raise your blood sugar level?





Quick Answer

Yes. Brown rice raises blood sugar because it contains starch, which is digested into glucose. It may cause a slower or smaller rise than highly polished white rice because it contains more fiber, but it is still a carbohydrate food and portion size matters.




Answer by Dr. Albana Greca, MD, MMedSc, Family Physician



Why Does Brown Rice Raise Blood Sugar?


Most of the carbohydrate in rice is starch. During digestion, starch is broken down into glucose and absorbed into the bloodstream. Brown rice contains more fiber and is less refined than white rice, so digestion may be slower, but the carbohydrate is still absorbed.



Is Brown Rice Better Than White Rice?


Brown rice can be a useful whole-grain choice because it retains more fiber, vitamins, minerals, and plant compounds. Some studies in people with type 2 diabetes found lower after-meal glucose responses with certain brown-rice preparations than with white rice.



Important: Brown rice is not automatically low glycemic. A large serving can still cause a substantial rise in blood glucose.


How Much Brown Rice Can a Person With Diabetes Eat?


There is no single portion that is right for everyone. Needs vary with activity, weight goals, kidney health, medicines, insulin, and overall nutrition.



A practical approach is the diabetes plate method:



  • Half the plate: non-starchy vegetables.

  • One quarter: protein such as fish, chicken, eggs, tofu, paneer, beans, or dal.

  • One quarter: brown rice or another carbohydrate food.



The CDC uses about 15 grams of carbohydrate as one carbohydrate serving for meal planning, but the exact amount of cooked rice can vary.



What Should You Eat With Brown Rice?


Pair a measured portion with vegetables and protein rather than eating a large bowl of rice alone. Examples include:




  • Brown rice with fish and non-starchy vegetables.

  • Brown rice with dal, greens, and plain yogurt or curd.

  • A small rice portion with chicken, tofu, or paneer and salad.



Does Cooking Method Matter?


Yes. Rice variety, processing, cooking time, and texture can affect how quickly starch is digested. Very soft or heavily processed rice may be absorbed faster than firmer, more intact grains. Cooling rice may increase some resistant starch, but it does not remove the carbohydrate.



How Can You Check Your Own Response?



  1. Measure the cooked rice portion.

  2. Keep the rest of the meal similar on comparison days.

  3. Check glucose before eating if your clinician recommends monitoring.

  4. Check again one to two hours after the start of the meal.

  5. Look for a repeated pattern rather than one isolated reading.



For many nonpregnant adults with diabetes, the ADA lists a peak post-meal glucose target of below 180 mg/dL (10.0 mmol/L), measured one to two hours after the beginning of the meal. Personal targets may differ. See our after-meal blood sugar guide.



What If Brown Rice Causes a Large Spike?



  • Reduce the cooked portion.

  • Add more non-starchy vegetables and protein.

  • Avoid juice or sweetened drinks with the meal.

  • Try another intact whole grain or legume in a measured portion.

  • Discuss repeated high readings with your diabetes clinician.



Do not change insulin or diabetes medicine based on one rice test. Repeated high readings may require review of the whole meal and treatment plan.



Medication Safety



People using insulin or medicines that can cause hypoglycemia, such as sulfonylureas, should not make large sudden reductions in carbohydrate intake without discussing the change with their clinician.



Dr. Albana’s Takeaway

Brown rice does raise blood sugar. It may cause a gentler rise than white rice for some people, but portion size remains important. Use it as one measured carbohydrate part of a balanced meal and check your own response.





Written by: Dr. Albana Greca, MD, MMedSc, Family Physician


Medically reviewed by: Dr. Ruden Cakoni, MD, Endocrinologist


Last medically reviewed: August 5, 2026




Related Questions




Related Resources




References



  1. American Diabetes Association. Standards of Care in Diabetes—2026.

  2. CDC. Diabetes Meal Planning and Plate Method.

  3. CDC. Carb Counting and Diabetes.

  4. Brown rice and glucose profiles: randomized crossover trial.



Safety note: Rice portions, carbohydrate intake, and glucose targets should be individualized according to medicines or insulin use, kidney health, activity, nutritional needs, and your clinician’s recommendations.


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