Children may be ingesting high levels of mercury with their tuna fish sandwiches at school and at home.
That's according to research by the Mercury Policy Project, a consumer advocacy group.
MPP tested the mercury content of nearly 60 samples of canned tuna. The group said albacore or white tuna can triple a child's mercury exposure.
They recommend schools and parents not serve it.
The group also said children under 55 pounds should limit "light" tuna to one meal, once a month and twice a month for children over that weight. No child should eat tuna every day.
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