The 12 most contaminated fish you should avoid in the supermarket

4. Sharks
: Similar to swordfish, sharks contain dangerous levels of mercury and other toxins such as arsenic. Regular consumption of shark meat can increase the risk of heavy metal poisoning.

5. King mackerel

King mackerel is on the prohibited fish list of almost all health authorities due to its high mercury content. It is especially dangerous for children, pregnant women, and nursing mothers.

See continued on the next page