Gateway Drug Theory
The relationship between tobacco and other drug use has been well-established, however the nature of this association remains unclear. The two main theories are the phenotypic causation (gateway) model and the correlated liabilities model. The causation model argues that smoking is a primary influence on future drug use, while the correlated liabilities model argues that smoking and other drug use are predicated on genetic or environmental factors.
Read more about this topic: Tobacco Smoking
Famous quotes containing the words gateway, drug and/or theory:
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—Friedrich Nietzsche (1844–1900)
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—Gus Van Sant, U.S. screenwriter and director, and Dan Yost. Bob Hughes (Matt Dillon)
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It is the theory of the word for those
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The buzzing world and lisping firmament.”
—Wallace Stevens (1879–1955)