This fact was first able to prove the Australian scientists from the University of Melbourne. These findings are allowed to make long-term study. At the beginning of the experiment 121 teen was examined by MRI at the age of 12 years.
Over the next four years, 28 of them have started using drugs. Upon reaching the age of 16 teenagers underwent re-examination, which showed that those who are addicted to "grass", the volume of the orbitofrontal cortex was lower than that of their peers, do not do drugs.
Orbitofrontal cortex is responsible for emotional reactions and self-control. Scientists expect to find in the brain examined lovers smoke and other abnormalities characteristic of adult consumers "grass".
In particular, investigators have assumed detect structural changes in the amygdala, hippocampus and anterior cingulate cortex. However, nothing like they did not find.
As a result, it was concluded that the use of marijuana has a neurotoxic action on the brain tissue gradually, over time, with more prolonged drug use.
Until now, there was no evidence that changes in the brain among fans of soft drugs developed as a result of marijuana use, and do not exist initially.
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