"The best advice we can give people is to eat food that comes from a variety of different regions, as opposed to being raised in a single location," Lichtenstein said.
People also should vary their day-to-day eating patterns, Navas-Acien said.
"There are children out there who drink apple juice every day," she said. "That's risky because we know there are elevated arsenic levels in juice. People need to diversify their diet."
In July, the U.S. Food and Drug Administration proposed a threshold for arsenic levels in apple juice.
To learn more about arsenic in drinking water, visit the U.S. Environmental Protection Agency.
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