The Wisconsin Department of Natural Resources regulates the amount of mercury that can be released by industries. Metallic liquid mercury generally does not absorb very well when it swallowed. Breathing its vapors is very dangerous. When metallic mercury is touched it can slowly pass through the skin. There is no evidence that mercury causes cancer.
Symptoms can include menstrual problems, possible miscarriages and damage to unborn babies.
People's nervous systems and kidneys are very sensitive to mercury and are easily damaged. Symptoms of damage include blood in urine, shaking, burning pain in legs and feet, sleep disturbance, personality changes, irritability and memory loss. In general, chemicals affect the same organ systems in all people who are exposed. A person' s reaction depends on several things, including individual health, previous exposure to chemicals, and personal habits such as smoking or drinking. Blood, urine, hair and breast milk can all be tested for mercury.