Posted on 04/28/2026 10:41:29 AM PDT by dennisw
Teens who use marijuana may be at greater risk of permanent brain damage later in life, a study has revealed.
About 18 million Americans report using marijuana daily or nearly every day, and use is on the rise, largely due to recent decriminalisation across the US. From 1992 to 2022, for example, daily and near-daily use saw a 15-fold increase.
About one in seven of those users are teenagers, whose brains are still undergoing rapid changes in areas responsible for judgement, decision-making and memory.
Now, the largest-ever study of American teenagers has found regular cannabis use restricted vital growth in memory, attention, language and processing speeds over time, despite normal development when they were younger.
However, as they moved into later adolescence, their development in these areas slowed compared with their peers.
Experts from the University of California San Diego believe the culprit is tetrahydrocannabinol (THC), the psychoactive ingredient in marijuana, which was linked to worse memory in teens compared with cannabidiol (CBD), which is not intoxicating.
It is thought THC may lead to shrinkage of the hippocampus – the brain’s memory centre – and changes in white matter, which controls how different parts of the brain communicate with each other.
The researchers said while the deficits were small, the brain develops so quickly during adolescence that even subtle shifts could affect school performance and daily life.
(Excerpt) Read more at dailymail.com ...
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IOW If you must smoke weed or vape THC, wait until you are 25 and your brain is fully formed.
Bummer, man.
well, the good thing about being Scottish is the fact that my family would never spend money on drugs or cigarettes or alcohol or anything like that because we’re too cheap
I thought this was going to be booger picking.
Just nurturing new generations of Democrats.
That’s far out, Man
The human brain is not fully developed until age 25 or so.
We did not know this when we allowed 18 year olds to vote, and when we legalized marihuana!
It boggles my mind that with all that was done to ban or discourage tobacco use, with less information about pot, it is legalized.
Makes no sense to me from a health standpoint
It happened to my cousin. He started smoking pot very early in his teens.
He also stole his mother's valium.
He has the hallucinations under control these days but can't hold any kind of job.
He spends most days when the weather is nice sitting by the road watching the traffic go by.
Very sad. He was a very handsome and intelligent young man.
“I thought this was going to be booger picking.”
LOL! Me too. I was worried.
This is a lot to take in. I’ll light a blunt and meditate upon this.
Parents should involve their kids in motorsports. That way they won’t have any money for drugs and alcohol.

They always told me it was masturbation.
“Dave’s not here, man.”
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