STATE OF THE EVIDENCE
CANNABIS USE
AND REGULATION
ABOUT THE INTERNATIONAL CENTRE FOR SCIENCE IN DRUG POLICY
WRITING COMMITTEE
ICSDP SCIENTIFIC BOARD
DONATE
EXTERNAL PEER REVIEWERS
ACKNOWLEDGEMENTS
TABLE OF CONTENTS
INTRODUCTION
METHODS
COMMON CLAIMS ON CANNABIS USE
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COMMON CLAIMS ON CANNABIS REGULATION
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REFERENCES
FIGURES
FIGURE 1. Lifetime Probabilities of Drug Dependence
FIGURE 2. Estimated Price and Potency of Cannabis in the United States, 1990 - 2009
FIGURE 3. Trends in Cannabis Use Pre and Post Legal Change
FIGURE 4. Colorado Traffic Fatalities by Month
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INTRODUCTION
Common Claims on Cannabis Regulation
State of the Evidence: Cannabis Use and Regulation
Using Evidence to
Talk About Cannabis
State of the Evidence: Cannabis Use and
Regulation
State of the Evidence: Cannabis Use and Regulation
Common Claims
on Cannabis Use
Common Claims on Cannabis
Regulation
Common Claims on Cannabis Use
3
METHODS
Using Evidence to Talk About Cannabis
COMMON CLAIMS ON CANNABIS USE
CLAIM
COMMON CLAIMS ON
CANNABIS USE
6
STRENGTH OF
SUPPORTING
EVIDENCE
BOTTOM LINE
CLAIM:
STRENGTH OF SUPPORTING EVIDENCE:
BOTTOM LINE:
STATE OF THE EVIDENCE:
leads
not
CLAIM:
Health Canada advertisement
STRENGTH OF SUPPORTING EVIDENCE:
BOTTOM LINE:
STATE OF THE EVIDENCE:
th
CLAIM:
Enrique Peña
STRENGTH OF SUPPORTING EVIDENCE:
BOTTOM LINE:
STATE OF THE EVIDENCE:
not
th
CLAIM:
World
3
STRENGTH OF SUPPORTING EVIDENCE:
BOTTOM LINE:
STATE OF THE EVIDENCE:
3
th
CLAIM:
-
STRENGTH OF SUPPORTING EVIDENCE:
BOTTOM LINE:
STATE OF THE EVIDENCE:
ble confounding variables are accounted for.
alcohol use was associated with IQ decline
CLAIM:
STRENGTH OF SUPPORTING EVIDENCE:
BOTTOM LINE:
STATE OF THE EVIDENCE:
An analysis of twins who were discordant
genetic and environmental risk factors.
CLAIM:
STRENGTH OF SUPPORTING EVIDENCE:
BOTTOM LINE:
STATE OF THE EVIDENCE:
COMMON CLAIMS ON CANNABIS REGULATION
CLAIM
COMMON CLAIMS ON
CANNABIS REGULATION
STRENGTH OF
SUPPORTING
EVIDENCE
BOTTOM LINE
CLAIM:
STRENGTH OF SUPPORTING EVIDENCE:
BOTTOM LINE:
Potency (%)
Price (USD)
STATE OF THE EVIDENCE:
de facto
CLAIM:
Robert L. DuPont
STRENGTH OF SUPPORTING EVIDENCE:
BOTTOM LINE:
STATE OF THE EVIDENCE:
de
facto
th
CLAIM:
STRENGTH OF SUPPORTING EVIDENCE:
BOTTOM LINE:
increase
STATE OF THE EVIDENCE:
in favour
not
many
CLAIM:
STRENGTH OF SUPPORTING EVIDENCE:
BOTTOM LINE:
STATE OF THE EVIDENCE:
fatal
th
CLAIM:
6
STRENGTH OF SUPPORTING EVIDENCE:
BOTTOM LINE:
STATE OF THE EVIDENCE:
6
th
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CLAIM:
STRENGTH OF SUPPORTING EVIDENCE:
BOTTOM LINE:
STATE OF THE EVIDENCE:
REFERENCES
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