Scientists at the Research Institute of the McGill University Health Centre utilized adolescent and adult lab rats to conduct the study. The researchers found that after 20 days of exposure to cannabinoids (the active ingredient in marijuana), only the adolescent rats were negatively affected.
The adolescent rats exhibited a decrease in brain serotonin levels. Serotonin is a neurotransmitter that is known to be involved in emotional perception and that has been linked to depression. In addition, the adolescent rats showed increased levels of norepinephrine, which plays a key role in the fight-or-flight response. Increased levels of this chemical could contribute to heightened anxiety.
Gabriella Gobbi, one of the study's co-authors, commented on the findings: "Just because marijuana is a plant doesn't mean that it is harmless. Our study demonstrated that the cannabinoid, when consumed daily, can induce a permanent change in the brain."
(Source: www.canada.com)
Labels: marijuana, depression, anxiety, pot
Posted By: Aspen Education Group