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Study Examines Which Cans of Tuna have More Mercury

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Apparently not all cans of tuna are alike. Mercury levels in canned albacore tuna are three times greater than in chunk or light tuna, according to a recent state Health Department study.

Canned light tuna is usually labeled "chunk light" or "solid light." While cans of "white" tuna contain only albacore, light tuna can include a mix of several types of the fish.

The study looked at 289 cans of tuna from 83 grocery stores around the state. Albacore tuna contained an average of 215 parts per billion (ppb) of mercury, compared with an average of 57ppb in light tuna.

The U.S. Food and Drug Administration, which regulates canned tuna, takes action when mercury levels in the edible parts of fish reach 1 part per million.

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