Which type of lead exposure is most dangerous to children under six?

Lead-based dust is considered the most dangerous type of lead exposure for children under six due to several key factors. Young children are particularly vulnerable to lead poisoning because their bodies and brains are still developing. Ingesting or inhaling lead dust can happen easily as young children often engage in hand-to-mouth behaviors. This type of exposure can cause serious health issues, including cognitive deficits and developmental delays.

Lead-based dust can originate from deteriorating lead paint, which is commonly found in older homes and buildings. Unlike lead in soil or lead-derived water, the fine particles of lead dust can be readily inhaled or ingested when children play or crawl on contaminated surfaces. Because lead dust can circulate indoors and settle on toys, furniture, or floors, children may be exposed during their normal activities at home. As such, mitigating lead dust exposure is critical in protecting children's health, making it a primary concern for caregivers and educators in environments where young children are present.