Marijuana physiological effects

Tashkin, D.P., Shapiro, B.J., and Frank, I.M. Acute pulmonary physiologic effects of smoked marijuana and oral A -tetrahydro-cannabinol in healthy young men. N. Engl. J. Med. 289 336-341, 1973. 

Figure 10-1 depicts a model of the effects of drugs on consciousness that I developed when I was beginning to study marijuana intoxication [103, 105]. In addition to the physiological effects that constitute disrupting and patterning forces impinging... 

Cone, E. J., Johnson, R. E., Paul, B. D., Mell, L. D., and Mitchell, J. (1988) Marijuana-laced brownies behavioral effects, physiologic effects, and urinalysis in humans following ingestion. J. Anal. Toxicol. 12, 169-175. 

Heishman, S.J. et al., Acute and residual effects of marijuana profiles of plasma THC levels, physiological, subjective, and performance measures, Pharmacol. Biochem. Behav., 37, 561, 1990. 

Although the major effects of marijuana smoking last only about four to six hours, residual amounts can disrupt some physiological, mental, and emotional functions for a longer period. Urine tests may be positive for as long as ten to fifteen days in daily users and as long as a year in heavy users. Even casual use may result in positive tests for about five to seven days..—... 

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