"The human body continuously eliminates mercury and other toxins in urine, feces, hair, sweat, nails and skin. If excessive exposure is avoided, the body will efficiently eliminate most toxins. Mercury, for example, has a half-life in the body of only two to three months with no treatment at all."
http://www.drcranton.com/mercury.htm
"A recent study by the University of Rochester shows that eating ocean fish an average of 12 meals per week did not cause toxicity from mercury, even in pregnant women and small children."
http://www.ncbi.nlm.nih.gov/sites/en...=pubmed_docsum