Small-scale gold mining and the burning of coal for energy are the two main sources of mercury in oceans, the report said. Mercury accumulates in fish higher up the food chain, such as tuna and swordfish, and in the bodies of people who eat those fish. High mercury levels increase the risk of heart disease and dementia in adults, and if a pregnant woman consumes contaminated fish, her unborn child can absorb mercury, damaging the child's brain and resulting in lower IQ and an increased risk of attention deficit hyperactivity disorder (ADHD) and learning disorders.
read more... https://www.ncronline.org/news/earthbeat/we-pollute-oceans-sea-life-isnt-alone-risk-our-health-too
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