- Lead is ubiquitous in the environment, so, each one of us has some amount of lead in our blood.
- There is no known blood level of lead that is safe; its presence in whatever amounts is an health hazard.
- The primary cause of lead's toxicity is its interference with a variety of enzymes by replacing metallic cofactors (calcium, iron, and zinc) in enzymes in addition to induction of oxidative stress associated with cell membrane damage (by lipid peroxidation) and cell deaths.
- Lead may be found in food (think sugar) when food . . .
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