Lead (Pb)

Lead (Pb) is a heavy metal once commonly used in products like paint, pipes, and gasoline due to its durability. However, it is toxic to humans, especially affecting the brain and nervous system. Exposure can occur through inhaling dust, swallowing contaminated food or water, or skin contact. Lead poisoning can cause health issues such as cognitive impairments in children, high blood pressure, and kidney problems in adults. Due to its health risks, the use of lead has been heavily regulated or phased out in many countries, and efforts continue to reduce exposure and contamination.