Brown rice is not bad for you. For most people, it is a nutritious whole grain that provides more fiber, minerals, and vitamins than white rice. That said, brown rice does carry a few legitimate concerns, particularly around arsenic content, that are worth understanding so you can make smart choices about how much you eat and how you prepare it.
What Brown Rice Offers Nutritionally
Brown rice is simply white rice with its outer layers still intact. Those layers, called the bran and germ, are where most of the nutrition lives. One cup of cooked long-grain brown rice delivers about 3 grams of fiber along with roughly 2 milligrams of manganese (nearly 100% of your daily value), 80 milligrams of magnesium (about 25% of your daily value), and 11 micrograms of selenium (around 20% of your daily value). White rice loses most of these nutrients during processing.
The fiber in brown rice slows digestion and helps regulate blood sugar. A systematic review found the average glycemic index for brown rice is 55, compared to 64 for white rice. That lower number means brown rice causes a gentler, more gradual rise in blood sugar after a meal. For people managing their weight or watching their blood sugar, this difference adds up over time. In large population studies, high white rice intake was linked to elevated risk of type 2 diabetes, especially in populations where rice was the primary carbohydrate source.
The Arsenic Question
This is the biggest real concern about brown rice. Rice plants absorb arsenic from soil and water more efficiently than most other crops, and the inorganic form of arsenic (the more harmful type) concentrates in the bran, which is the outer layer that makes brown rice “brown.” Because white rice has its bran stripped away, brown rice contains roughly 80% more inorganic arsenic on average than white rice of the same variety. Testing has found average concentrations of about 154 parts per billion in brown rice versus 92 parts per billion in white rice.
Inorganic arsenic is a known carcinogen, and long-term exposure at elevated levels is linked to increased risk of certain cancers, heart disease, and developmental effects in children. That sounds alarming, but context matters. The amounts in a normal serving of brown rice are small. The risk scales with how much rice you eat and how often. If rice is an occasional part of a varied diet, arsenic exposure from brown rice is minimal. If rice is the centerpiece of nearly every meal, it is worth taking steps to reduce your exposure.
How to Reduce Arsenic in Brown Rice
The way you cook brown rice makes a significant difference in how much arsenic you actually consume. The traditional method of cooking rice in just enough water so it all gets absorbed keeps most of the arsenic in the grain. Cooking with a large excess of water and draining it off afterward pulls arsenic out. At a water-to-rice ratio of 12 to 1, about 57% of inorganic arsenic is removed on average. Traditional Southeast Asian cooking methods, which involve extensive rinsing followed by boiling in excess water and discarding that water, reduce arsenic by up to 45 to 57%.
Researchers have also tested a percolating method, where fresh hot water continuously flows through the rice during cooking, similar to how a coffee percolator works. This approach removed up to 85% of inorganic arsenic from individual rice samples. Steaming, by contrast, only removes about 10%. The practical takeaway: rinse your brown rice thoroughly before cooking, use far more water than you need, and drain the excess when the rice is done. It changes the texture slightly, but it substantially lowers arsenic levels.
Phytic Acid and Mineral Absorption
Brown rice contains phytic acid, a compound that binds to minerals like iron, zinc, and magnesium in your digestive tract, making them harder to absorb. This is why phytic acid is sometimes called an “antinutrient.” Brown rice has roughly 190 micrograms per gram of phytic acid in its unprocessed state. For someone who eats a varied diet with plenty of mineral sources, this is not a meaningful problem. It becomes more relevant for people who rely heavily on brown rice as a staple and have limited access to other mineral-rich foods.
Soaking brown rice before cooking reduces phytic acid and improves mineral availability. Soaking at warm temperatures (around 50°C or 122°F) for extended periods is especially effective. In one study, soaking at that temperature for 36 hours cut phytic acid nearly in half, from 190 to 99 micrograms per gram, while more than doubling the amount of zinc the body could actually absorb. Even shorter soaks at room temperature help. If you already rinse and soak your rice before cooking, you are already reducing phytic acid without any extra effort.
Digestive Sensitivity
Some people find brown rice harder to digest than white rice. The extra fiber and the intact bran can cause bloating or gas, especially if you are not used to eating much fiber. Brown rice also contains lectins, proteins found in all plants but in higher amounts in whole grains and legumes. In their active state, lectins can irritate the digestive lining and contribute to bloating, gas, or stomach upset. Cooking breaks down most lectins, so properly cooked brown rice is not a major concern for most people. If you have a condition like irritable bowel syndrome, you may be more sensitive to these effects and might tolerate white rice better.
Who Should Be More Careful
Young children and infants are more vulnerable to arsenic exposure relative to their body weight. The FDA has set action levels for inorganic arsenic specifically in infant rice cereals, recognizing that babies who eat rice-based foods face proportionally higher exposure. For young children, varying grains (oats, barley, quinoa) rather than relying on rice is a simple way to reduce risk.
People who eat rice multiple times a day, common in many Asian and Latin American diets, accumulate more arsenic over time regardless of whether they choose brown or white. For heavy rice eaters, rotating between brown rice, white rice, and other grains, and using the high-water cooking method described above, are practical strategies that preserve the nutritional benefits of brown rice while keeping arsenic exposure low. Sourcing also matters: rice grown in different regions varies in arsenic content, with basmati rice from California, India, and Pakistan tending to have lower levels than rice grown in the south-central United States.