Editor's note: October is National Seafood Month, and to celebrate, we’ll be featuring a series of blog posts about seafood, sustainable fishing and health. Today we’re taking on mercury.
Maybe when you think of mercury you think of old thermometers. But did you know that mercury in seafood can affect your health?
As a result of antiquated manufacturing techniques, a few chlorine factories release mercury pollution into nearby rivers and streams, which ends up in the ocean, where it travels up the food chain, becoming more and more concentrated in larger and larger fish, including favorites such as tuna and swordfish.
What’s the danger of mercury in fish? Mercury is a neurotoxin and can cause symptoms such as headaches, foggy thinking, muscle stiffness, dizziness, nausea, and hair loss. Mercury is dangerous for women who are or may become pregnant because children are particularly susceptible to the effects of mercury poisoning.
The best way to protect yourself and your family is to learn what kinds of seafood have high mercury levels and to consume these only in moderation. The Monterey Bay Aquarium’s Seafood Watch guide contains information about mercury levels as well as about sustainability.
We’ve made progress over the years, both in requiring stores to provide information about mercury and in getting companies to switch to less dangerous ways of producing chlorine. However, mercury in fish remains an issue. Just this summer, Oceana was instrumental in convincing the Spanish government to release a study finding that more than half of mako shark and swordfish samples had dangerous levels of mercury.
You can learn more about mercury and you can also take action by asking Walmart and Sam’s Club to post safety notifications about mercury in fish.
- High Level of Seafood Fraud Found in Denmark Posted Sat, September 20, 2014
- Ocean Roundup: Shark-Eating Dinosaur Fossils Discovered, Germany Paving Way for Cheaper Wind Energy, and More Posted Mon, September 15, 2014
- Oceana Magazine: Arctic Assets Posted Thu, September 18, 2014
- CEO Note: Sperm Whales Left Unprotected from Drift Gillnets Posted Sun, September 21, 2014
- Ocean Roundup: Leatherback Coloration May Play Important Role, UK Sees New Voluntary Seafood Labeling Scheme, and More Posted Wed, September 17, 2014