Assessment 1 - Lead is a powerful and systemic toxin that...

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Lead is a powerful and systemic toxin that serves no useful purpose in the human body. Humans can become acutely ill from high doses of lead absorption during a single exposure or chronically ill after several low dosage exposures over a period of time; days, months, or even years of exposure The severity of lead exposure is measured through blood tests (Lead Action News, 1995). Lead is absorbed into the body through ingestion into the gastrointestinal tract, inhalation through the nose or mouth into the lungs and upper respiratory tract, or through absorption from direct skin contact. Inhalation is the most common route of absorption since lead particles are commonly dispersed through dust in the air during manufacturing processes. Lead workers can easily absorb lead into the digestive tract through the mouth while eating, smoking, chewing tobacco, applying make-up, or any other activity where the mouth is touched with lead contaminated hands.
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