Lead
where is lead found?
Homes painted before 1978
Soil
Shooting ranges
Electronics solder
Dyes and glazes used in ceramic tile and pottery (including new)
LEAD POISONING (PLUMBISM)
Lead-based paint and its dust, usually found in older buildings, are common sources of exposure. Young children are especially at risk. Occupational exposure, such as welding, is a more common cause for adults.
Symptoms include:
developmental delays
Abdominal pain
Neurologic changes
Irritability
Consult with a licenced physician if you are experiencing any of these symptoms.
Long Bone Radiograph of Hands - "lead lines" shown as increased density on the metaphysis (growth plate) in a 5-year-old male. Increased density of the metaphysis can impair growth.
lEAD ABSORPTION
Lead absorption can be impacted by route of exposure. For example, exposure to lead dust (respiratory route) may result in higher absorption than exposure to the equivalent amount of lead from chips (digestive route).
Adults typically absorb up to 20% of ingested inorganic lead after a meal and up to 60-80% on an empty stomach
Children absorb about 50% of ingested lead after a meal and up to 100% on an empty stomach.
In times of stress (particularly pregnancy and lactation), the body can mobilize lead stores, thereby increasing the level of lead in the blood.