Copper in HealthFact 5 of 9
Although excessive ingestion of copper can cause nausea and other adverse effects, the World Health Organization (WHO) has determined there is no major concern for setting an upper threshold, because toxic risk levels rarely exist.
The WHO board of environmental scientists said any risk should be assessed on the bioavailability of copper at a specific site; i.e., evaluation should not be based on total copper content, but rather on the volume of soluble copper that can actually be absorbed by humans or wildlife.
