What Happens to Your Blood Sugar When You Eat Brown Rice


Credit: fcafotodigital / Getty Images
Credit: fcafotodigital / Getty Images
  • Brown rice contains more fiber and protein than white rice, which slows digestion and leads to a more gradual rise in blood sugar.
  • White rice has a higher glycemic index and is more likely to cause sharper blood sugar spikes and increased diabetes risk.
  • Portion control and pairing brown rice with protein, fiber, or healthy fats can help manage blood sugar levels more effectively.

Brown rice is a popular whole-grain option for its rich, nutty flavor, versatility in recipes, and myriad health benefits. Compared to white rice, it has a much lower impact on blood sugar levels. Here's what you can expect to happen to your blood sugars when you eat brown rice.

Brown Rice’s Effect on Blood Sugar

Brown rice is a notable source of dietary fiber (approximately 3.2 grams per 1 cup cooked) and protein (5.5 grams per 1 cup cooked). Both of these macronutrients slow digestion because they take longer to break down, helping you to feel full for longer after eating.

However, slowed digestion also leads to a delayed blood sugar response, meaning blood glucose levels rise (and fall) more gradually—and sometimes reach a lower peak—than with foods low in fiber and protein.

What this means is that whenever you eat brown rice, the resulting blood sugar response will be more muted—especially when compared to refined grains.

Brown Rice vs. White Rice 

White rice contains only 0.6 grams of fiber and 4.4 grams of protein per 1 cup cooked. When white rice is produced, the bran and germ layers are removed, which contributes to its low fiber content. This nutritional gap means that white rice has a more pronounced and potentially elevated blood sugar response (spike and subsequent dip) than brown rice.

A 2021 review found that white rice has a glycemic index—a scale measuring how quickly a given food raises blood sugar—of 73, while brown rice measures 63. Additionally, a 2022 study found that white rice intake was more strongly associated with type 2 diabetes, whereas brown rice consumption was associated with a lower risk.

How to Eat Brown Rice for Steady Energy Levels

To reduce the blood sugar response of any kind of rice, however, pair it with other fiber, protein, and fat-containing foods. These three macronutrients slow the glycemic response. High-fiber foods include fruits, vegetables, other whole grains, nuts, seeds, and legumes. Protein-rich foods include lean meats, fish, eggs, poultry, nuts, seeds, and legumes. Lastly, healthy fats can be found in avocado, avocado oil, olives, olive oil, nuts, and seeds.

A few meal ideas featuring brown rice include:

  • Brown rice stir-fry with tofu, chicken, or shrimp
  • Brown rice bowl topped with roasted veggies, lean protein, avocado, and an olive oil-based vinaigrette
  • Ground turkey and brown rice-stuffed peppers
  • Burrito bowls with brown rice, black beans, guacamole, salsa, and grilled chicken
  • Brown rice pudding made with nuts, fruit, and honey
  • Vegetable and tofu curry served over brown rice

How to Eat Brown Rice with Type 2 Diabetes

While it’s best to follow your healthcare provider’s advice, brown rice can be a great grain choice for those with type 2 diabetes—especially compared to white rice. 

That said, although brown rice has a lower glycemic response than white rice, it is still a source of carbohydrates that can raise blood sugar levels. One cup of cooked brown rice contains just over 50 grams of carbohydrates. Aim to keep serving sizes to ⅓ to ½ cup and pair brown rice with a source of protein, fiber, and/or healthy fat for optimal blood sugar management.

Lastly, regularly checking your blood sugar levels can serve useful information to see how brown rice impacts your numbers. This can help you dial in the right portion size and food pairings for you.



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