Major toxic metals: Mercury

The final toxic metal we will discuss is mercury. Fish is the primary source of dietary mercury. Larger marine fish have higher concentrations of mercury than smaller fish. Fish and other creatures, such as predatory birds, which occupy advanced levels in the food chain, are known to concentrate mercury as much as 1000-fold above the levels that occur in their immediate environment.

Mercury poisoning can damage the gastrointestinal tract, as well as the kidneys and nervous system. High exposures can lead to skin rashes, dermatitis, mood swings, memory loss, mental disturbance, and muscle weakness. Children and unborn babies are the most vulnerable to the effects of mercury poisoning.

If you want to learn more about the hazard of heavy metal exposure, please check on the review from WHO: Mercury and health.