7. Halibut can also contain pollutants like polychlorinated biphenyls (PCBs) and dioxins.
PCBs are man made toxins and used in industrial activities. PCBs can contaminate sources of water including seas. These can get into fish and other sea creatures.
8. Dioxins are chemicals that get into the environment through industrial emissions, burning of trash and fuels and chlorine bleach processes.
These toxins reach humans through the food chain. These chemicals accumulate in the fatty animal tissues such as fish and other seafood. Dioxins can cause a lot of damage in the body. It affects development, reproductive processes, immunity and can also cause hormonal problems and cancer. This toxin is in some varieties of halibut as well.