程序代写 PowerPoint Presentation

PowerPoint Presentation

Poisons and History – Trial and Error!
Foods Versus Poisons

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Harmfulness Versus Safeness
Definition of “Toxicology”
History of Toxicology
Summary and Conclusions

Definition of Toxicology
The study of toxic chemicals – No!
The study of the adverse effects of chemicals – Yes!
Paracelsus said it best: “All substances are poisons; there are none that are not. Dose differentiates between a poison and a remedy.”

History of Toxicology
The Ebers (papyrus) – 1500 BC
Discorides (employed by Nero) – 50 BC
de Medicis (employed by the Borgias) – Middle Ages
“Bombastic” Paracelsus – 1500 AD
Percival Pott (English Physician) – 1775 AD
Orfila (“father of toxicology”) – early 1800s
Pesticide Boom – mid-1900s
(“Silent Spring”) – early 1960s

Catherine de Medici

“Bombastic” Paracelsus

Percival Pott

Pesticide Boom of the 1900s

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