Rice is a source of arsenic exposure in the U.S., a study of pregnant women showed.
Both rice consumption and exposure to arsenic through cooking with or drinking tap water were associated with increased arsenic concentrations in the urine (P<0.0001 for both), according to Diane Gilbert-Diamond, PhD, of Dartmouth College in Hanover, N.H., and colleagues.
The researchers determined that eating 0.56 cups of cooked rice each day was comparable to drinking one liter of water containing 10 µg of arsenic, the federal safe standard for drinking water. The average amount of rice eaten in the U.S. is about half a cup per day, although some groups -- including Asians and people eating a gluten-free diet -- consume much more.
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