Adapted from a presentation by Penny Le Couteur The Fraser Institute Vancouver Canada All substances are poisonous there is none which is not a poison the right dose differentiates a poison from a remedy ID: 548788
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Slide1
Natural or Man-made Chemicals?
Adapted from a presentation by Penny Le Couteur,
The Fraser Institute, Vancouver, CanadaSlide2
“All substances are poisonous,
there is none which is not a poison;
the right dose differentiates a poison from a remedy.”
Paracelsus
circa 1538Slide3
The great myth
“Natural is good;
man-made is bad”Slide4
It may be natural but you’ll be just as dead!Slide5
The seven most deadly chemical compounds
LD50 /
mg/kg
Botulinum toxin A
3 x 10
-8
Tetanus toxin A
5 x 10
-6
Diphtheria toxin
3 x 10
-4
Dioxin *
3 x 10
-2
Muscarine
2 x 10
-1
Bufotoxin4 x 10-1Sarin *4 x 10-1
LD
50
= The lethal dose of a compound for 50% of animals exposed
* SyntheticSlide6Slide7Slide8Slide9Slide10
Viktor Yushchenko
President of the Ukraine
July 2004 December 2004
Slide11Slide12
Muscarine - from mushroomsSlide13Slide14
Bufotoxin
– from the common toad