For individuals eating cod frequently, what factor regarding low-level mercury accumulation becomes a concern over time?
Answer
Consistent patterns over many years, especially for small children
While cod is generally categorized as low-mercury, the concern shifts from immediate risk to cumulative exposure when consumption is frequent, such as multiple times weekly. The text emphasizes that even low-level accumulation, when occurring consistently over many years, warrants specific attention, particularly when considering vulnerable populations like small children, for whom total accumulated exposure can become a significant factor compared to other protein sources.

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