Prolonged lead exposure can lead to health problems. Pregnant women, young children and elderly adults are most impacted. In pregnant women, lead can be passed to the fetus through the placental membrane leading to premature deliveries and reduced growth. In young children, low levels of lead exposure have been related to damage to the central and peripheral nervous system, learning disabilities, shorter height, impaired hearing, and impaired blood cell formation and function. For adults, high levels of lead exposure can cause damage to the kidneys, brain, and nervous system.
According to the US EPA, there is no safe level of lead that can be consumed or ingested.