What are the risks of ingestion of lead?

Lead ingestion&poiso. Lead ingestion may have no symptoms, anemia is the first to appear anf if the level goes above 60ug/dl, and causes encephalopathy and seizures, abdominal pain.But if not treated there can be long term sequele affecting mental development and learning disorders.In adults it can be delirium, cognitive deficit, tremors, hallucination&convulsions.Abdominal pain, memory loss, kidney failure, weakness&depression.