UK information & news archive
Cannabis: what it is & what it does
A gateway into the CCGUIDE archive on cannabis and hemp: effects, health, science, history, law, medicine, driving, dependence, research and practical uses.
Cannabis archive
Start with the essentials
Core CCGUIDE pages covering cannabis, THC, medicines, dosage, law, prohibition and practical background.
The THC molecule
A short archive reference page on tetrahydrocannabinol.
→Recreational and medical use
Discussion of the differences between recreational and medical cannabis use.
→How long cannabis stays in the system
Archived reference material on detection times.
→What is not cannabis?
A distinction between natural cannabis and adulterated or synthetic material.
→Is cannabis a drug?
Archived discussion, including comparative mortality material.
→Administration and dosage
Historical CCGUIDE material on administration and dose.
→Cannabis prohibition
CCGUIDE's archive page on prohibition and its consequences.
→Cannabis law and drug testing
UK law, testing and related archive material.
→Cannabis cafés in the UK
Historical press coverage of UK cannabis cafés and coffeeshops.
→UK Government on hemp for fuel
DEFRA correspondence from July 2004 about hemp and bioenergy.
→Bad soapbar and contaminated cannabis
An archived warning about adulterated cannabis resin and plant material.
→Cannabis around the world
Archive material on the legal position internationally.
Health & effects
Effects, safety & dependence
Historical CCGUIDE pages collecting arguments, studies and commentary on cannabis effects and health.
What does cannabis do?
Archive material on effects when cannabis is smoked or eaten.
→Smoking cannabis and health
Historical material discussing health claims and evidence.
→Addiction and dependence
Discussion of physical and psychological dependence.
→Relative addictiveness
Comparative archive material on the addictiveness of substances.
→Cannabis and hard-drug myths
Material examining the “gateway” theory.
→Cannabis and cancer
Archived discussion of cannabis, cancer and lung disease.
→Cannabis and psychosis
Historical CCGUIDE material on psychosis research.
→Deaths from drugs: statistics
Comparative statistics and discussion of lethal dose.
→Cannabis myths
A collection of claims and counter-arguments from the archive.
→Cannabis as medicine
Archived article by Ian Williams Goddard.
→Cannabis, the brain and IQ
Archive material on cognition, the brain and cannabis.
→Cannabis and driving
Research and archive material on driving skills and road safety.
Plant, hemp & history
The plant and its wider uses
CCGUIDE pages on hemp, seeds, names, historical reference material and political history.
Hemp: what it is and what it is used for
Introductory archive material on industrial hemp.
→Hemp in Encyclopaedia Britannica
Historical reference material from the 1910–1914 Encyclopaedia Britannica.
→Cannabis hemp seeds and their uses
Archived information about hemp seed and practical uses.
→The many names of cannabis
Cannabis, marijuana, hemp and many other historical or regional names.
→Chronology of cannabis and hemp
A long-form historical timeline from the CCGUIDE archive.
→UK MPs who admitted trying cannabis
Archived political and press references.
Research & policy
Studies, hearings & human-rights material
Longer-form CCGUIDE archive sources for research, essays and historical policy work.
Official scientific studies and reports
CCGUIDE's collection of cannabis studies, reports and conference material.
→Institute of Medicine hearing, 1998
Report on the medicinal marijuana hearing in New Orleans.
→WHO report boost for cannabis
Archived Independent article from February 1998.
→Cannabis prohibition and human rights
CCGUIDE material relating prohibition to articles of the Universal Declaration of Human Rights.
External reference sites
Selected links still available
The older cannabis page contained many external links. This shortened list keeps only references that still resolve to relevant material.
Chemical constituents of cannabis
Erowid reference material on compounds found in cannabis.
External: Erowid ↗Hashish types and descriptions
An external historical reference retained from the original page.
External: A1B2C3 ↗Comparison of cannabis leaves
Erowid cannabis leaf image reference.
External: Erowid ↗Pictures of cannabis
Erowid's cannabis image archive.
External: Erowid ↗Cannabis and road safety
Dr G. B. Chesher's outline of driving research.
External: UKCIA ↗Dopamine and dependence liability
Jon Gettman's 1997 paper retained by UKCIA.
External: UKCIA ↗Global Hemp
Current hemp industry and reference material.
External: Global HempExplore more of CCGUIDE
Use the alphabetical site index for additional cannabis, hemp, law, medicine, news and campaign archive pages.