Short answer · Medically reviewed summary · Last updated: 2023-07-13

Mercury poisoning, also known as mercury toxicity, occurs when a person is exposed to high levels of mercury, a toxic heavy metal. Mercury can exist in various forms, including elemental mercury, inorganic mercury compounds, and organic mercury compounds. Exposure to mercury can happen through: Ingesting contaminated food or water Inhaling mercury vapors, often released from industrial processes or certain products like thermometers or fluorescent light bulbs Direct skin contact with mercury The symptoms of mercury poisoning depend on the level and duration of exposure: Acute exposure can cause symptoms such as nausea, vomiting, abdominal pain, and diarrhea. Chronic exposure to lower levels of mercury may lead to neurological and behavioral problems, including tremors, memory loss, irritability, and difficulty concentrating. Pregnant women and young children are particularly vulnerable to the harmful effects of mercury: Mercury can pass from a pregnant woman to her developing fetus, potentially causing developmental issues. In children, mercury poisoning can impair neurological development, leading to learning difficulties and delays. Prevention involves: Avoiding or minimizing exposure to mercury sources Proper handling and disposal of mercury-containing products Eating low-mercury fish and avoiding high-mercury fish If you suspect mercury poisoning, it is crucial to seek medical attention promptly.