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Mercury poisoning is a type of metal poisoning due to exposure to mercury. [3] Symptoms depend upon the type, dose, method, and duration of exposure. [3] [4] They may include muscle weakness, poor coordination, numbness in the hands and feet, skin rashes, anxiety, memory problems, trouble speaking, trouble hearing, or trouble seeing. [1]
They include the collection and testing of mercury levels in blood, hair, nails, and urine. [20] Most of these biomarkers have a shorter half-life for mercury (e.g. in blood the half-life is usually only around 2–4 days), which makes some of them better for testing acute, high doses of mercury exposure.
Species on the food chain can amass body concentrations of mercury up to ten times higher than the species they consume. This process is called biomagnification. For example, herring contains mercury levels at about 0.1 parts per million, while shark contains mercury levels greater than 1 part per million. [5]: Vol. 4
Baby foods and their ingredients had up to 91 times the arsenic level, up to 177 times the lead level, up to 69 times the cadmium level, and up to five times the mercury level that the U.S. allows ...
The study states, "during follow-up [blood mercury levels were] 1.0 to 1.5 μg higher in the amalgam group than in the composite group." EPA considers high blood mercury levels to be harmful to the fetus and also states, "exposure at high levels can harm the brain, heart, kidneys, lungs, and immune system of people of all ages."
The European Commission told Euronews Health the “maximum levels for mercury in food are established on the basis of the data we have on the actual, real-life occurrence of mercury in food”.