currentsinbiology:

Cannabis: scientists call for action amid mental health concerns

The risks of heavy cannabis for mental health are serious enough to
warrant global public health campaigns, according to international drugs
experts who said young people were particularly vulnerable.

The warning from scientists in the UK, US, Europe and Australia
reflects a growing consensus that frequent use of the drug can increase
the risk of psychosis in vulnerable people, and comes as the UN prepares
to convene a special session
on the global drugs problem for the first time since 1998. The meeting
in New York next week aims to unify countries in their efforts to tackle
issues around illicit drug use.

A woman blows rings with marijuana smoke during an event in in Denver, Colorado.
Photograph: Mark Leffingwell/Reuters