Lead poisoning occurs when lead, a toxic metal, builds up in the body, often over months or years. It can affect anyone, but young children are particularly vulnerable due to their developing brains and bodies. Common sources of lead exposure include old paint, contaminated soil, and plumbing pipes made of lead. Symptoms of lead poisoning can vary but may include abdominal pain, fatigue, and developmental delays in children. If left untreated, it can lead to serious health issues, including learning disabilities and behavioral problems. Screening and prevention are essential to protect at-risk populations from lead exposure.