Contact an expert who can comment on the study
The complete study
Summary of the study
Consumption recommendation data at a glance
Frequently asked questions and answers about the new study
What can consumers do to limit their exposure?
Some of the contaminants found in farmed salmon
How the study's farmed salmon consumption recommendations were determined
Background information about world salmon production and consumption
Several small, peer-reviewed pilot studies on farmed salmon
About the study's authors
First Global Sampling Study Reveals Health Risks Associated with Consuming Farm Raised Salmon
In the most comprehensive analysis of farmed and wild salmon to date, researchers analyzed toxic contaminants in approximately 700 farmed and wild salmon (totaling 2 metric tons) collected from around the world to be representative of the salmon typically available to consumers. The study, which was sponsored by the Pew Charitable Trusts, examined salmon produced in eight major farmed salmon producing regions and obtained from retail outlets in 16 major North American and European cities.
The study found that concentrations of several contaminants associated with serious health risks from neurological effects to cancer are significantly higher in farmed salmon than in wild salmon.
The authors concluded that concentrations of several cancer-causing substances are high enough to suggest that consumers should consider restricting their consumption of farmed salmon. In most cases, consumption of more than one meal of farmed salmon per month could pose unacceptable cancer risks according to U.S. Environmental Protection Agency (EPA) methods for calculating fish consumption advisories.
Because of the rapid growth of farmed salmon production, consumption of farmed salmon now exceeds consumption of wild salmon in U.S. and European diets.