Cambios

'''Poison''' is any substance that causes disturbances or a harmful effect when administered to a living organism.<ref name=toxicology>{{cite book|editor=Hodgson, Ernest|author=Hodgson, Ernest|chapter=1 - Introduction to Toxicology|title=A Textbook of Modern Toxicology|page=3|edition=3rd|publisher=John Wiley & Sons|location=Hoboken, New Jersey|year=2004|isbn=0-471-26508-X}}</ref> Another definition states that poison is any substance or blend of substances that can be life threatening.<ref>{{cite book|editor=James, Robert C.; Roberts, Stephen M.; Willians, Philip L|author=Kem, William R|title=Principles of Toxicology: Environmental and Industrial Applications|edition=2nd|chapter=17 Properties and Effects of Natural Toxins and Venoms|page=409|publisher=John Wiley & Sons|location=New York|year=2000|isbn=0-471-29321-0}}</ref> The term poison is closely related to the amount as high doses of a substance can be harmful, and at the same time not cause injury in a lower dose.<ref name=toxicology /><ref group=note>Paracelsus stated that "all things are poison and not without poison; only the dose makes a thing not a poison" in {{cite book|editor=Krieger, Robert|title=Hayes’ Handbook of Pesticide Toxicology|edition=3rd|volume=1|publisher=Elsevier/Academic Press|location=Amsterdan|year=2010|volume=1|page=xxix|isbn=978-0-12-374481-4}}</ref> [[File:Melk16.jpg|thumb|250px|St. Benedict and the cup of poison, anonymous Austrian master, oil on wood, end 15th century.]]