Recent investigations have found the toxin arsenic in rice and apple juice.

Consumer Reports published results of their tests of 88 samples of apple and grape juices. Nine samples had more arsenic than the federal government allows in drinking water

In a separate analysis of government nutrition data, researchers commissioned by Consumer Reports also found that Americans who reported drinking apple or grape juice had arsenic levels in their urine that were 20% higher than people who didn’t drink those juices.

Similarly, researchers at Dartmouth Medical School found that pregnant women who reported eating rice had higher levels of arsenic in their urine than women who didn’t eat rice.

Eating just half a cup of rice a day, the researchers reported, could expose someone to just as much arsenic as if they had been drinking water at the government’s maximum allowable limit.

Should you be worried about being exposed to arsenic in food? WebMD consulted experts who study arsenic to answer your questions.