NZ Herald 12 November 2014
Regular cannabis use shrinks the brain but increases the complexity of its wiring, a study has found.
To some extent the loss of brain volume is balanced by larger numbers of connections between neurons, scientists discovered.
But they warn that those who take the drug for too long are likely to suffer damaging effects.
The brain scan study of cannabis users is one of the first to investigate the drug’s long-term neurological impact in living people.
Dr Sina Aslan, from the University of Texas at Dallas, US, co-led the research.
“What’s unique about this work is that it combines three different MRI (magnetic resonance imaging) techniques to evaluate different brain characteristics,” she said.