Brown rice is not bad for you in normal amounts, but it does carry a few genuine downsides that white rice doesn’t. The most notable is arsenic: brown rice contains about 154 parts per billion of inorganic arsenic on average, roughly 1.5 times more than white rice. That’s enough to matter if you eat rice daily or feed it to young children, but not enough to make brown rice dangerous as part of a varied diet.
The concerns people raise about brown rice fall into three categories: arsenic, compounds that block mineral absorption, and digestive irritation. Each one is real, but context and portion size determine whether any of them actually affect your health.
The Arsenic Issue
Rice absorbs arsenic from soil and water more efficiently than almost any other grain. In brown rice, inorganic arsenic (the more harmful form) concentrates in the bran and germ, the outer layers that get stripped away to make white rice. A Consumer Reports investigation found brown rice averaged 154 ppb of inorganic arsenic compared to 92 ppb in white rice of the same type. That’s about 80 percent more arsenic in every serving.
For an adult eating rice a few times a week, this difference is unlikely to cause problems. The risk scales with how much rice you eat and how often. People who rely on rice as a daily staple, particularly multiple servings a day, accumulate more exposure over time. The FDA has focused its regulatory efforts on protecting infants and young children, who are more vulnerable to arsenic’s effects on development. The agency established an action level for inorganic arsenic in infant rice cereals in 2020, and brown rice infant cereal tested higher (119 ppb) than white rice cereal (104 ppb).
Where your rice is grown also matters. Rice from certain regions, particularly parts of the southern United States where arsenic-based pesticides were historically used on cotton fields, tends to test higher. Basmati rice from California, India, and Pakistan generally tests lower.
How to Reduce Arsenic in Your Rice
The simplest method is cooking rice in excess water, the way you’d cook pasta, then draining it. This reduces inorganic arsenic by about 50 percent in brown rice and 60 percent in parboiled rice. You lose some water-soluble vitamins in the process, but you cut your arsenic exposure in half.
Rinsing rice thoroughly before cooking also helps. Some people soak brown rice overnight and discard the soaking water before cooking, which addresses both arsenic and another concern: phytic acid. Varying your grains is the most practical strategy of all. Swapping in quinoa, oats, barley, or farro for some meals reduces your cumulative arsenic intake without requiring you to give up brown rice entirely.
Phytic Acid and Mineral Absorption
Brown rice is high in phytic acid, a compound that binds to iron, zinc, and magnesium in your digestive tract and prevents your body from absorbing them. Phytic acid accounts for about 75 percent of the total phosphorus stored in rice seeds, and it’s concentrated in the same bran layer that contains the arsenic. Research has shown that diets high in phytic acid can meaningfully reduce zinc absorption, which matters most for people who already have marginal zinc or iron status, including vegetarians, vegans, and people in low-income settings where rice is the dominant food.
If you eat a varied diet with multiple protein sources, fruits, and vegetables, phytic acid in brown rice is unlikely to push you into a deficiency. But if rice is the centerpiece of most of your meals, the mineral-blocking effect adds up. Soaking brown rice at a warm temperature before cooking breaks down a significant portion of the phytic acid. Sprouted brown rice, which you can buy or make by soaking the grain until small tails emerge, has even less.
Digestive Sensitivity
Some people find brown rice harder to digest than white rice, and there are a couple of reasons for that. The fibrous bran layer takes longer to break down, which can cause bloating and gas in people with sensitive stomachs or conditions like irritable bowel syndrome. Brown rice also contains lectins, proteins found in all plants but in higher concentrations in whole grains and legumes. Lectins can bind to cells lining the digestive tract, potentially disrupting nutrient breakdown and affecting gut bacteria. Cooking neutralizes most lectins, so this is mainly a concern with undercooked grains. Milder side effects like bloating and gas are more common than anything serious.
If brown rice consistently bothers your stomach, that’s worth paying attention to. White rice, which has had the bran removed, is one of the most easily digested grains and may simply be a better fit for your body.
Blood Sugar Effects
Brown rice does have a lower glycemic index than white rice: 55 on average versus 64. That means it raises blood sugar more slowly, which is a genuine advantage for people managing diabetes or insulin resistance. But brown rice is still a moderately high-glycemic food. For comparison, whole wheat scores around 41 and barley comes in at 25. If blood sugar control is your primary goal, brown rice is better than white rice but not as effective as other whole grains.
A large study of U.S. men and women found that replacing white rice with brown rice was associated with a lower risk of type 2 diabetes, but replacing white rice with other whole grains like barley or oats showed an even stronger benefit. Brown rice is an improvement over white rice for blood sugar, not a standout among grains.
What Brown Rice Does Well
Despite the concerns above, brown rice delivers more fiber, B vitamins, magnesium, and selenium than white rice. The bran layer that concentrates arsenic also concentrates nutrients. One cup of cooked brown rice provides roughly 3.5 grams of fiber compared to less than 1 gram in white rice. It contains plant lignans, though in modest amounts (about 14 micrograms per cup of dry grain), far less than rye or flaxseed. The fiber and magnesium content support digestive regularity and may contribute to cardiovascular health over time.
For most adults, the nutritional benefits of brown rice outweigh the risks, provided you aren’t eating it at every meal. The people who should be most cautious are parents of infants and toddlers, pregnant women, and anyone eating rice as a primary calorie source multiple times a day. For everyone else, brown rice a few times a week, cooked in plenty of water, and rotated with other grains is a perfectly healthy choice.