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Abstract
A strictly quantitative assessment of the contribution made by car exhaust gas lead to the body lead burdens of young children will probably never be attained. However, there is now available a substantial scientific literature relating airborne lead to lead in humans; especially in young children who ingest deposited and impacted aerosol lead on both food and non‐food items. The distributions of lead burdens reported for new‐born and pre‐school children have been set against levels of lead absorption recently associated with pregnancy problems in women and impaired cognitive/ behavioural functioning in children. When viewed from the perspective provided by geochemically derived natural levels of lead in air, water, food and the blood of Man, the findings described should not be surprising.