From Dr. Mercola:
Fish used to be one of the healthiest foods on the planet, but pollution and farming perversions have made most fish a highly unhealthy food, and some types of farmed fish the most toxic food on the planet.
Fish farming, which began about 65 years ago, is considered by many to be one of the least sustainable approaches to farming. This is particularly true when it comes to carnivorous fish like salmon, which feed on other fish. To raise 1 pound of salmon, you need over 2 pounds of wild fish to produce its feed.
In addition to being an unsustainable practice, aquaculture also causes many environmental problems, and poses unique risks to your health. In fact, industrial fish farming raises many of the same concerns about chemicals and pollutants associated with feedlot cattle and factory chicken farms.
Feedlots of the Sea
Most wild-caught fish now suffer from some degree of contamination, due to widespread environmental pollution. Since most fish farms are placed in open waters or inland lakes, farmed fish are exposed to those same pollutants, but they’re also fed a concoction of pesticides, antibiotics1 and other drugs.
Toxic copper sulfate is also frequently used to keep nets free of algae. All of these toxins build up in sea floor sediments and are dispersed through the environment, affecting other fish and wild sea creatures.
Despite its many drawbacks, aquaculture is booming. Between 2008 and 2013, the farmed fish industry in the U.S. grew at a pace of 5 percent per year. As noted in the featured video, better solutions are needed.
One novel invention is the aquapod — a large, predator-proof geodesic sphere that can withstand being placed further out in the ocean. By dispersing the waste byproducts in deeper waters, the environmental impact is lessened.
However, in my view this is far from an ideal solution, as drugs and toxins are still being dispersed into the wild, and while it may take longer to produce adverse effects, those effects are certainly not eliminated by this method.
It’s similar to dumping toxic waste barrels into deep waters in the middle of the ocean. It may be out of sight and out of mind, but that doesn’t mean it has no environmental ramifications in the long run!
Land-Based Fish Farms Also Wreak Ecological Havoc
“The only peer-reviewed study examining the environmental impacts of Nova Scotia land-based fish farms has found some negative effects on downstream ecosystem.
A now-defunct unit of Environment Canada conducted research at five sites in 2011 which grow juvenile fish for transfer later to open ocean pens …
Lead researcher Benoit Lalonde said they looked at the health of benthic invertebrates, ‘the building blocks of what lives in the river or the stream’ in areas where water that