This article is from the Hemp / Cannabis / Marijuana FAQ, by Brian S. Julin verdant@twain.ucs.umass.edu with numerous contributions by others.
Marijuana produces no withdrawal symptoms no matter how
heavy it is used. It is habit forming (psychologically
addictive), but not physically addictive. The majority of
people who quit marijuana don't even have to think twice
about it. Comparing marijuana to addictive drugs is really
quite silly.
For a drug to be physically addictive, it must be
reinforcing, produce withdrawal symptoms, and produce
tolerance. Marijuana is reinforcing, because it feels good,
but it does not do the other two things. Caffeine, nicotine
and alcohol are all physically addictive.
``Behavioral, Neurochemical, and Neurohistological Effects of Chronic
Marijuana Smoke Exposure in the Nonhuman Primate'' by William Slikker
Jr. et al. in ``Marijuana Cannabinoids Neurobiology and
Neurophysiology'' Laura Murphy, Andrzej Bartke ed. pub. CRC Press Boca
Raton, FL, 1992.
``Marihuana A Signal of Misunderstanding '' pub. U.S. Government
Printing Office Washington, 1972.
``The Marijuana Problem in the City of New York'' (Mayor Laguardia's
Commission on Marijuana. The text of the decision can be found in a
three volume set entitled ``The Marijuana Papers'') more pub. data
pending.
``Marihuana reconsidered Lester Grinspoon.'' by Lester Grinspoon M.D.
1928- pub. Harvard University Press Cambridge, MA, 1977.
 
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