Where Does Lead Exposure Come From?
Lead in soil often comes from homes previously painted with lead-based paint or from nearby streets that were contaminated before leaded gasoline was banned in the late 1970s. In turn, the lead in soil often contributes to high lead levels in household dust. Kids can also be exposed to lead in soil by playing in dirt and putting their hands in their mouths.
This study suggests that we need to take a closer look at soil contamination — especially in places kids play at home, at playgrounds and in parks.
Kids can also be exposed to lead through tainted toys — often jewelry — or even, as a recent study found, lead can be found in kids drinks and snacks.
What Problems Does Lead Cause?
When lead gets into the body — through inhalation, swallowing or skin absorption — the neurotoxin gets treated like calcium, iron or other helpful minerals, circulating through the system. High levels of lead in the blood long-term can lead to big problems for kids in learning, memory and brain development. It can lower IQs, stunt growth, delay development, and damage the nervous system, hearing and/or kidneys. Long term lead poisoning can also cause behavior problems, speech and language problems and poor muscle coordination. Studies also suggest prolonged lead exposure can lead to violent criminal behavior as the toxin can lower serotonin levels causing aggression and anti-social behavior.
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