Mercury — a heavy metal, the only one among metals that is in a liquid state at room temperature.
Due to its high density, electrical conductivity, and ability to evaporate at moderate heating, mercury has been used in thermometers, lamps, and the chemical and electronics industries.
However, the toxicity of mercury vapors and compounds makes it dangerous to humans even at low levels of exposure.
Sources of Exposure
Mercury is not an essential element for life, and its intake into the body should be minimal.
The safe level of consumption is no more than 0.001 mg/kg of body weight per day.
The main sources of mercury intoxication are:
- marine fish (tuna, swordfish, shark);
- mercury lamps, thermometers, batteries;
- industrial emissions and environmental pollution;
- mining and processing of ores containing mercury.
Possible Risks of Excess and Their Manifestations
Mercury in the body can cause acute and chronic poisoning. Children and pregnant women are particularly sensitive to its effects.
Manifestations of mercury intoxication include:
- tremors, weakness, coordination disturbances;
- headaches, irritability, insomnia;
- nausea, metallic taste, gastrointestinal disorders;
- kidney damage and reduced immunity;
- cognitive impairments, memory and speech deterioration.
Inhaling vapors — the most dangerous route of exposure. Even small amounts of mercury can accumulate and cause irreversible consequences.