What is a major risk factor for children regarding lead exposure?

In considering major risk factors for children regarding lead exposure, both ingestion of lead-based paint and breathing lead dust in the air are significant concerns.

Children are particularly vulnerable to lead exposure because they may frequently put their hands or objects into their mouths, leading to the ingestion of lead dust or paint chips. Lead-based paint, which was commonly used in homes built before 1978, can deteriorate over time, creating dust and chips that are easily ingested. This route of exposure is a major risk factor, especially in older homes where the paint may be peeling or chipping.

Additionally, breathing in lead dust is also a considerable risk. When renovations are done, or if there are deteriorating lead surfaces, fine particles can become airborne. Children, who tend to crawl or play near these contaminated surfaces, may inhale this dust, leading to lead exposure.

Considering both ingestion of lead-based paint and inhalation of lead dust as significant risks highlights the multifaceted nature of lead exposure in children. This understanding emphasizes the importance of addressing both routes to effectively mitigate lead risk in environments where children live and play. Therefore, the best choice is a combination of these two modes of exposure.