Lead Exposure

The harmful effects of lead poisoning in humans is well documented. However, the causes of lead poisoning and its effects upon children can be different than it is for adults. Please depress the links on the left to learn more.

Lead Exposure in Children:

In 1978, lead-based paint was banned from use in all homes to protect people from the hazards of lead. However, many older houses and apartments still contain lead-based paint. Children under age 6 have the greatest risk of getting lead poisoning because their nervous systems are still developing, which makes them particularly vulnerable. Also, children's play activities can expose them more to lead-based paint hazards, including lead-contaminated dust, soil and paint chips.
The Centers for Disease Control and Prevention reports that nearly 1 million children ages one to five have elevated blood lead levels. The majority of the cases involve low-income children.

Being exposed to lead can cause permanent damage to the nervous system as well as widespread health problems, including reduced intelligence and attention span, hearing loss, stunted growth, reading and learning problems and behavioral difficulties.

Lead Exposure in Adults:

Lead exposure occurs when lead dust or fumes are inhaled, or when lead is ingested via contaminated hands, food, water, cigarettes or clothing. Lead entering the respiratory and digestive systems is released to the blood and distributed throughout the body. More than 90% of the total body burden of lead is accumulated in the bones, where it is stored. Lead in bones may be released into the blood, re-exposing organ systems long after the original exposure.

Adverse Effects:

The toxic nature of lead is well documented. Lead affects all organs and functions of the body to varying degrees. The frequency and severity of symptoms among exposed individuals depends upon the amount of exposure. The table below shows many of the key lead-induced health effects.

What Lead Levels are Considered Elevated in Adults?

At levels above 80 g/dL, serious, permanent health damage may occur
Between 50 and 80 g/dL, serious health damage may occur
At lead levels between 30 and 50 g/dL, health damage may be occurring, even if there are no symptoms
From 20-30 g/dL, regular exposure is occurring. There is some evidence of potential physiologic problems.
From 1-20 g/dL, lead is building up in the body and some exposure is occurring
6 micrograms is the typical level for U.S. adults.