What is the effect of vegetables grown by the waste water containing lead Pb on human health?

Lead is a naturally-occurring element that can be harmful to humans when ingested or inhaled, particularly to children under the age of six. Lead poisoning can cause a number of adverse human health effects, but is particularly detrimental to the neurological development of children.

Failure to treat lead poisoning in the early stages can cause long-term or permanent health damage, but because of the general nature of symptoms at early stages, lead poisoning is often not suspected.

In adults, lead poisoning can cause:

• poor muscle coordination, nerve damage to the sense organs and nerves, controlling the body, increased blood pressure, hearing and vision impairment, reproductive problems (e.g., decreased sperm count), retarded fetal development even at relatively low exposure levels

In children, lead poisoning can cause:

• damage to the brain and nervous system, behavioral problems, anemia, liver and kidney damage, hearing loss, hyperactivity, developmental delays, in extreme cases, death

  hence, any presence for Pb in food chain will lead to big danger on human life.