Metallic toxicity occurs when harmful metals accumulate in the body, leading to adverse health effects. Common toxic metals include lead, mercury, and cadmium. These metals can enter the body through contaminated food, water, or air, and can affect various organs, including the nervous system, kidneys, and liver. Symptoms of metallic toxicity vary depending on the metal and exposure level. They may include headaches, fatigue, gastrointestinal issues, and neurological problems. Long-term exposure can lead to serious conditions, such as organ damage or cancer. Prevention involves reducing exposure and monitoring environmental sources of these toxic metals.