The study found no groundwater contamination or soil - fertility decline after three years, while the presence of trace metals remained low. (scientificamerican.com)
In any case, trace metals in either variety of salmon are found in such low amounts that they do not appear to be a cause for concern. (healthline.com)
New research examined the association between trace metals and the risk of developing pancreatic cancer. (sciencemediacentre.org)