Brown rice is a nutritious choice during pregnancy. It provides more fiber, magnesium, iron, and B vitamins than white rice, and it’s specifically recommended by the National Institutes of Health as a healthy carbohydrate for managing blood sugar during pregnancy. That said, rice does contain trace amounts of arsenic, so how you prepare it and how often you eat it both matter.
Key Nutrients for Pregnancy
Brown rice keeps its outer bran layer intact, which is where most of the good stuff lives. Compared to white rice, it delivers higher amounts of fiber, magnesium, potassium, iron, and B vitamins B1, B3, B6, and B9 (folate). Several of these nutrients play direct roles during pregnancy. Folate is essential for preventing neural tube defects in early fetal development. Iron supports the increased blood volume your body produces to supply the placenta. Magnesium helps with muscle function and may reduce the risk of leg cramps, a common pregnancy complaint.
White rice has been stripped of its bran and germ during processing, which removes most of these nutrients. Some are added back through enrichment, but the fiber and magnesium are not. If you’re choosing between the two, brown rice gives you significantly more nutritional return per serving.
Blood Sugar and Gestational Diabetes
Keeping blood sugar steady is one of the most important dietary goals during pregnancy, especially if you’re at risk for or managing gestational diabetes. Carbohydrate quality matters here. Foods with a glycemic index above 70 cause rapid spikes in blood sugar, while those below 55 produce a slower, more gradual rise. Brown rice falls in the low-to-medium range, while white rice tends to spike blood sugar more quickly.
MedlinePlus, the NIH’s patient resource, lists brown rice and wild rice as recommended carbohydrate choices for a gestational diabetes diet. It specifically advises avoiding simple carbohydrates like white rice, potatoes, and sweets because they cause blood sugar to rise quickly after eating. Swapping white rice for brown rice may improve blood sugar control and help with weight management, both of which are relevant throughout pregnancy.
Relief From Pregnancy Constipation
Constipation affects a large number of pregnant women, driven by hormonal changes that slow digestion and the physical pressure of a growing uterus. Fiber is the standard first-line approach, and brown rice is a practical way to get more of it.
A study published in the European Journal of Clinical Nutrition found that women eating a brown rice-based diet consumed about 21.5 grams of fiber per day, compared to just 14.2 grams on a standard diet. Over four weeks, the brown rice group saw bowel movements increase from 3.4 to 5.0 per week, bringing them into the normal range. Total gut transit time dropped by over 16 hours. The researchers attributed the improvement to the insoluble fiber in brown rice, which softens stool and promotes intestinal movement.
Steady Energy Without the Crash
Fatigue is one of the defining features of pregnancy, particularly in the first and third trimesters. The type of carbohydrate you eat influences how your body processes energy. High-quality complex carbohydrates like brown rice are digested and absorbed more slowly, providing a steadier supply of fuel. Refined carbohydrates cause a rapid blood sugar spike followed by a drop, which can leave you feeling drained. Pairing brown rice with a protein source (eggs, beans, chicken) slows digestion even further and helps sustain energy between meals.
The Arsenic Question
Rice absorbs more arsenic from soil and water than most other grains, and brown rice contains more than white rice because arsenic concentrates in the outer bran layer. The FDA has acknowledged that exposure to inorganic arsenic during pregnancy may increase the risk of adverse effects, including impaired fetal development and neurodevelopmental concerns. This doesn’t mean you need to avoid brown rice entirely, but it does mean taking a few simple precautions.
The most effective step is cooking brown rice in excess water, the way you’d cook pasta. Instead of using a 2:1 water-to-rice ratio and letting it absorb completely, use a large pot of water (roughly 6:1 or more) and drain the excess after cooking. Research shows this method reduces inorganic arsenic in brown rice by about 50%. Rinsing rice before cooking has minimal effect on arsenic levels, though it’s still a good general practice.
Variety also helps. Rotating brown rice with other whole grains like quinoa, oats, farro, or barley reduces your overall arsenic exposure while still giving you the fiber and nutrients you need. Eating brown rice a few times a week as part of a varied diet is a reasonable approach during pregnancy.
Storing and Reheating Cooked Rice Safely
Cooked rice carries a specific food safety concern that’s worth knowing about during pregnancy. A bacterium called Bacillus cereus can survive the cooking process as a spore, then multiply rapidly if rice sits at room temperature. The danger zone is between 40°F and 140°F, and the toxins produced can cause vomiting and diarrhea.
A few habits keep this risk close to zero. Don’t leave cooked rice out for more than an hour or two. If you made a large batch, divide it into smaller shallow containers and put them in the refrigerator right away (you don’t need to wait for it to cool first). A large covered pot placed directly in the fridge traps heat and takes too long to cool down, which is exactly the environment bacteria thrive in. Eat refrigerated rice within a few days, and reheat it until it’s steaming hot throughout. If you use a rice cooker’s “keep warm” setting, make sure the temperature stays above 150°F.
How to Include Brown Rice in a Prenatal Diet
Brown rice takes longer to cook than white rice, usually around 40 to 45 minutes, so batch cooking can be helpful. Cook a few servings at once using the excess-water method to reduce arsenic, then store individual portions in the fridge for quick meals over the next couple of days. It pairs well with stir-fried vegetables and tofu, in grain bowls with roasted chicken and leafy greens, or as a side alongside beans for an extra protein and fiber boost.
If the texture or nuttier flavor doesn’t appeal to you (taste preferences can shift dramatically during pregnancy), mixing half brown and half white rice is a simple compromise that still improves the nutritional profile of your meal. Some women find that brown rice sits better in their stomach than heavier whole grains during periods of nausea, while others prefer lighter options like oatmeal in the first trimester and switch to brown rice later on.