How does lead paint get from the surfaces of an apartment or home (walls, windows, doors, etc.) to a child’s blood stream and body organs?

Lead-based paint often peels and chips. Often, lead paint can be found on surfaces such as door jambs or window sills or other friction/impact surfaces.  Lead paint or dust can easily be sent airborne this way, and a child can then efficiently ingest the lead paint.  Young children are also exposed through routine hand-to-mouth activity after they have touched surfaces which were laden with lead paint dust, or by eating paint chips. Once ingested, a young child’s body efficiently absorbs the lead which is deposited throughout the child’s body, including the young child’s brain.