13. Farmed Fish
We tend to think that eating fish is very healthy, especially cold water ones like salmon because of high omega-3 content. The omega-3 essential fatty acids found in saltwater fish come from a diet of deep-water plankton and smaller fish. Farm-raised species of fish do not have such high omega-3 content. That is because farmed fish are usually fed an unnatural diet.
Also, they are contaminated with antibiotics, pesticides, chemicals and other cancer causing substances. These farmed fish have been shown to have higher levels of polychlorinated biphenyls (PCBs), a group of industrial chemicals. Synthetic pigments (canthaxanthans) are often added to the fish so that it gets its pink color, while in the wild it happens naturally .
Wild-caught fish is still definitely the best choice. Though nowadays even wild-caught fish can be contaminated with chemicals like mercury. To read more about what kind of fish is safe and what fish is the most contaminated, click here.
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