The Power of Information
At EWG, our team of scientists, engineers, policy experts, lawyers and computer programmers pores over government data, legal documents, scientific studies and our own laboratory tests to expose threats to your health and the environment, and to find solutions. Our research brings to light unsettling facts that you have a right to know.
Tuna Calculator
How much tuna can you eat safely?
We will tell you what the FDA won't.
This site uses the FDA's own scientific guidelines for what constitutes a safe dose of mercury to calculate the maximum amount of tuna you can safely eat each week and not exceed what the FDA considers a safe exposure level. As you'll see, the results don't jibe with the seafood consumption advisory the agency is proposing.
The FDA's proposed advice to consumers — eat 12 ounces of a variety of fish per week — if followed, could result in more women getting unsafe levels of mercury in their bodies than they currently do — assuming they have no other exposure to mercury than that from tuna.
Enter your weight into the mercury calculator:
