Here is just one report, out of many catalogued at www.pubmed.gov: Verbal Memory Performance and Reduced Cortical Thickness of Brain Regions Along the Uncinate Fasciculus in Young Adult Cannabis Users.
The cortical thickness is reduced because either cells are not growing properly, or they are dying.
There are many other articles on PubMed. My search phrase was "marijuana effect on brain."
And thank you for your kind words in another post. I try to raise awareness that there are no harmless drugs, with the hope of encouraging people to "just say no." Obviously, the addicts don't want to hear that they are damaging themselves--addiction is a relentless master. But the people who could become addicted, maybe they will find the strength to resist that first use once they understand the dangers.
[[ “I try to raise awareness that there are no harmless drugs, with the hope of encouraging people to “just say no.”” ]]
Great idea; I’m thinking of getting on the “please don’t do benzos” trail, after peeling myself off klonopin one painful day at a time. I only took them for a few months and at a dosage I felt was low enough to get off of with ease, but I don’t know if there is such a thing. Never again!
Keep up the great work!