Legal marijuana in the US may be less potent than packaging claims
12 April 2023
Tests of marijuana sold legally in Colorado found that most products contained significantly less THC, the main psychoactive component, than was listed on the packaging
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Premium
Legalised cannabis in Canada and US hasn’t killed illegal market
24 May 2022
Even when cannabis is legalised, some users still prefer to stick with their usual illegal sources, which can be cheaper and easier to access
Cannabis was domesticated in north-west China around 12,000 years ago
16 July 2021
The cannabis plant originally had multiple uses, and farmers only started breeding distinct strains for drug or fibre production around 4000 years ago
The science of cannabis: Can it really help our mental health?
2 December 2019
Cannabis was long thought to harm mental health but is now prescribed as a treatment. Psychopharmacologist Val Curran looks at the evidence
Cannabis
21 May 2019
Cannabis is the most popular illegal drug in the world, with an estimated 192 million users in 2016. It can make people feel happy, chilled out, giggly, hungry, lethargic, anxious or paranoid. It has been enjoyed as a relaxant, employed as a medicine...
