Mercury pollution from coal burning or mining has recently fallen significantly. But there is still a lot of mercury deposited at depths of more than 50 meters below the ocean surface.
Pregnant women are advised not to eat tuna. Infants and small children are also particularly at risk from neurotoxic effects because their development is not yet complete and their nervous tissue is vulnerable. Overall, according to the Federal Environment Agency in Germany, mercury pollution is harmless to health. In addition to sea fish, amalgam dental fillings are a major source of mercury in the human body.