Brown rice is not unhealthy, but it does carry a few legitimate nutritional tradeoffs that white rice doesn’t. The main concern is arsenic: brown rice contains roughly 154 parts per billion of inorganic arsenic on average, compared to 92 ppb in white rice. That’s about 67% more of a known carcinogen. There are also valid questions about antinutrients and oxalates. None of these make brown rice dangerous for most people, but they’re worth understanding, especially if you eat rice daily.
Why Brown Rice Has More Arsenic
Rice absorbs arsenic from soil and water more readily than most crops. The arsenic concentrates in the outer bran layer of the grain, which is exactly the part that gets stripped away to make white rice. So brown rice, with its bran intact, retains significantly more. FDA testing found average inorganic arsenic levels of 154 ppb in brown rice versus 92 ppb in white rice.
For adults eating rice a few times a week, this isn’t a major health risk. The concern grows for people who eat rice as a daily staple, for pregnant women, and especially for infants. The FDA has set an action level of 100 ppb for inorganic arsenic in infant rice cereals, which means brown rice infant cereals can be particularly problematic. If you’re feeding a baby, oat-based cereals are a safer alternative.
Where Your Rice Comes From Matters
Not all brown rice carries the same arsenic load. Rice grown in the south-central United States (Arkansas, Louisiana, Texas, Mississippi) averages nearly twice the total arsenic of California-grown rice. In one analysis, an organic brown rice from California ranked lowest of all samples tested. Basmati rice from India and Pakistan, along with jasmine rice from Thailand, also consistently tests lower for arsenic. If you eat brown rice regularly, switching to one of these sources is a simple way to cut your exposure.
Cooking Methods That Lower Arsenic
How you cook rice also makes a difference. Using a high water-to-rice ratio (6 cups of water per 1 cup of rice) and draining the excess water after cooking reduces inorganic arsenic by about 45%, compared to raw rice. Rinsing the rice thoroughly before cooking helps too. This is the opposite of the absorption method most people use, where you add just enough water for the rice to soak up completely. That method retains more arsenic. If you’re concerned, cook your rice more like pasta: boil it in plenty of water, then drain.
Phytic Acid and Mineral Absorption
Brown rice contains phytic acid, a compound stored in the bran and germ that binds to minerals like iron, zinc, and calcium in your digestive tract. This can reduce how much of those minerals your body actually absorbs from a meal. Phytic acid carries a negative charge that attracts positively charged minerals, forming complexes your gut can’t break down efficiently. White rice has very little phytic acid because it’s concentrated in the outer layers that get removed during milling.
This matters most if your diet is already low in iron or zinc, or if rice is your primary source of those minerals. For people eating a varied diet with meat, legumes, and vegetables, the effect is modest. Soaking brown rice for several hours before cooking reduces phytic acid content and improves mineral availability. It’s also worth noting that phytic acid has antioxidant properties, so it’s not purely a negative.
Oxalate Content for Kidney Stone Risk
One cup of cooked brown rice contains about 24 mg of oxalate, which puts it in the “very high” category according to UC Irvine’s kidney stone center. Oxalates can contribute to calcium oxalate kidney stones, the most common type. If you’ve had kidney stones or your doctor has told you to follow a low-oxalate diet, this is relevant. White rice is significantly lower in oxalates. For people without a history of stones, the oxalate content of brown rice is unlikely to cause problems on its own.
The Nutritional Upside Is Real
The reason brown rice gets recommended in the first place is that it genuinely offers meaningful health benefits. It has a lower glycemic index than white rice, typically around 59 compared to 70 or higher for most white rice varieties. That means it raises blood sugar more gradually, which matters for diabetes prevention and blood sugar management. In one trial with overweight adults, a brown rice diet produced a daily glycemic load of 183 compared to 228 for white rice, a 20% reduction.
The cardiovascular data is also encouraging. A large study tracking men and women over time found that people eating two or more servings of brown rice per week had a 21% lower risk of coronary heart disease compared to those who rarely ate it. Replacing just 10 grams of refined grain with 10 grams of whole grain per day was associated with a 3% drop in heart disease risk. Brown rice also provides more fiber, magnesium, and B vitamins than white rice.
How to Get the Benefits With Less Risk
The practical answer is that brown rice is a healthy food for most people, but a few adjustments can minimize the downsides:
- Choose your source carefully. California-grown rice, basmati from India or Pakistan, and jasmine from Thailand tend to be lower in arsenic.
- Cook with excess water. A 6:1 water-to-rice ratio with draining removes roughly 45% of inorganic arsenic.
- Soak before cooking. A few hours of soaking reduces phytic acid, improving mineral absorption.
- Rotate your grains. Mixing in quinoa, oats, barley, or farro throughout the week limits arsenic accumulation from any single source.
If you eat rice once or twice a week, the arsenic in brown rice is not something to worry about. If you eat it daily, or if you’re feeding young children, these steps are worth taking seriously. Brown rice is not unhealthy, but it rewards a little attention to how it’s sourced and prepared.