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Cardiovascular consequences of marijuana use.
1Kaiser Permanente Medical Care Program, Division of Research, Oakland, California 94612, USA.
Journal of Clinical Pharmacology
|November 5, 2002
Summary
Marijuana use can acutely increase heart rate and blood pressure, potentially triggering cardiac events in at-risk individuals. However, large studies show no link between marijuana and cardiovascular disease hospitalization or mortality.
Area of Science:
- Cardiovascular Physiology
- Cannabinoid Pharmacology
Background:
- Marijuana and its active compounds, like delta-9-tetrahydrocannabinol (THC), exert significant physiological effects.
- Understanding these effects is crucial for assessing cardiovascular health risks.
Purpose of the Study:
- To review current knowledge on marijuana and cannabinoid effects on human physiology and disease.
- To evaluate the impact of marijuana use on cardiovascular outcomes and risk factors.
Main Methods:
- Literature review of studies on marijuana/cannabinoid effects.
- Analysis of physiological responses, including heart rate, blood pressure, and exercise capacity.
- Examination of data on cardiovascular disease incidence, mortality, and acute events.
Main Results:
- Acute marijuana use increases heart rate and may cause orthostatic hypotension.
- Tolerance to THC's effects develops with continued use.
- While some studies suggest marijuana may trigger angina or myocardial infarction, large cohort studies show no association with cardiovascular disease hospitalization or mortality.
Conclusions:
- Patients with coronary heart disease should be cautious about marijuana use due to potential acute risks.
- Further research is needed on chronic effects, cardiovascular risk factors, and therapeutic cannabinoid applications.