Natural Highs: The Oldest Drugs Flashcards
From Reefer Madness
to High Economy:
Cannabis
What IS
cannabis,
anyway?
One of the world’s oldest crops (hemp harvested in China 8500 years ago).
However, cannabis is very mysterious.
Current broad use of the term ‘cannabis’ is often vague, unscientific, and confusing.
Unsure if the genus Cannabis is monotypic (one species) or polytypic (three or more
species?)
Why so weird?
ancient origin.
extremely long evolutionary and domestication history (including artificial
selection) – may have wiped out other variants.
widespread geographic dispersal.
prohibition made it hard to investigate scientifically.
By the end of this lecture, you will be
able to…
Describe the botanical profile of cannabis.
Describe key events in the cultivation and use of cannabis
in the US and Australia.
Describe the basic pharmacodynamics and
pharmacokinetics of cannabis.
Describe the benefits and limitations of cannabis as a
medical treatment, based on current evidence.
A ‘third strain’
– ruderalis?
Molecular genetics is providing increasing evidence that cannabis
is a polytypic genus.
Some classify cannabis as three sub-species:
Indica
Sativa
Ruderalis
Ruderalis plants are small and yield relatively little medicine with
low potency?
Seems to have a different flowering and life cycle.
Ruderalis strains are typically avoided by breeders and cultivators.
Medical cannabis is usually indica or sativa strains (whatever they
may be!)
Cannabis in
the US
Hemp grown in North American colonies from early seventeenth
century (by slaves).
American hemp industry peaked before 1860 - declined after
Civil War (loss of slaves; rise of industrialisation).
Medicinal cannabis included in the American pharmacopoeia by
1851.
Imported from India via Britain.
Medical uses were sporadic and ill-defined.
By the early 1900s, US government began experimenting with
domestic production of drugs, including cannabis.
Recreational
uses
Early reports of recreational cannabis use in the US - Southwest
and the port of New Orleans, c.1900.
New term - ‘marijuana’ - smoked version of cannabis indica.
Racist fears about Mexican immigrants and drug trade.
In 1915, El Paso, Texas was first US municipality to ban the nonmedical cannabis trade (fears of Mexican drug trade).
Street name was ‘muggles’!
Recreational marijuana smoking spread rapidly during the 1920s:
industrial hubs like Kansas City and Chicago – working class, youth,
Black associations.
jazz musicians like Louis Armstrong brought ‘reefers’ to various gigs
across the country
The 1950s and 1960s
1950s Beatnik movement – cannabis use.
1960s – growing counterculture.
American soldiers sampled Thai and Vietnamese varieties while
serving in Vietnam.
Mostly imported cannabis – wild cannabis has little THC.
By the 1970s, harvesting of wild cannabis was common in the US.
Led to chemical pesticide spraying by local governments.
1980s and the USWar on Drugs –
dope goes indoors
Greater US state and federal law enforcement campaigns.
After 1989, growers moved largely indoors – labs, hydroponics.
1996 - California became the first state to re-legalise marijuana for
medicinal use.
Indoor growing became the norm.
2012: Colorado and Washington state re-legalise adult use of
marijuana.
Both states focused on regulating - and privileging - energyguzzling indoor cultivation!
Australia’s cannabis history
As with the US, medicinal cannabis available in colonial Australia.
No data on extent of use.
Opium was seen as a much more dangerous drug of abuse and
traffic (racist associations with Chinese).
1938: the term ‘marihuana’ appears in Australia in connection with
the ‘reefer madness’ moral panic in the US.
Medical cannabis finally phased out in the 1960s in Australia.
Destruction of wild crops in 1970s.
Similar VietnamWar and counterculture influences in Australia.
Current
cannabis law in
Australia
ACT, 1977 –
Australian
Marijuana
Party
Legalisation – the high economy
Impact of legalisation of recreational and medicinal use in the US:
23 US states allow adult recreational use, 38 allow medical sales.
2020: legal sales = $17.5 billion, a 46% increase from 2019.
By comparison, craft beer industry in the US = $41 billion in annual sales.
Estimated creation of just over 6,000 new full-time jobs in retail and
production.
Also marketing, data analysts, lawyers, health professionals.
Reduction of cannabis-related criminal convictions – similar use rates,
but black people are 3.6 times more likely to be arrested for marijuana
possession compared to whites.