The LA area study indicated that cooking rice played a role in tap water consumption/exposure. Rice accumulates the ions as water is boiled.
edit: and the cohort was culturally enriched for rice consumption
edit again - sorry: The LA area study did not measure and was thus not able to control for air quality/pollution. Although they did measure and control for blood lead levels. This seems like possibly a structural flaw for conclusions on early cognitive development - I think the authors were quite reasonable in limiting conclusions in their discussion(s). IMO what is most suggested by the aggregate results is a more comprehensive study at population scale.
edit: and the cohort was culturally enriched for rice consumption
edit again - sorry: The LA area study did not measure and was thus not able to control for air quality/pollution. Although they did measure and control for blood lead levels. This seems like possibly a structural flaw for conclusions on early cognitive development - I think the authors were quite reasonable in limiting conclusions in their discussion(s). IMO what is most suggested by the aggregate results is a more comprehensive study at population scale.
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