Science of Poison Documentary | Modern Marvels Documentary

The fields of medicine (particularly veterinary) and zoology often distinguish a poison from a toxin, and from a venom. Poisons are toxins produced by organisms in nature, and venoms are toxins injected by a bite or sting (this is exclusive to animals).
Poisoning can affect the body in different ways, from minor discomfort to long-term organ damage. Lead poisoning, for example, can lead to permanent brain and kidney damage. A caustic or chemical poison can burn the throat and stomach and lead to scarring.
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