WEED FEED / John Ross Ferrara / Monday, Oct. 8, 2018 @ 8:22 a.m.
Weed Feed: Marijuana More Damaging to Teen Brains Than Alcohol, New Study Finds

Not an actual photo of teen brains. | Wikimedia
Teens who use marijuana cause more damage to their brains than those who drink alcohol, a new study published in The American Journal of Psychiatry finds.
According to the study, marijuana use showed signs of short and long-term effects on the teens’ cognitive brain functions, including problem solving, long-term memory, short-term memory and manipulation, USA Today reports.
“For adolescents who use substances, the lasting effects of cannabis on cognition appear to be more pronounced than those observed for alcohol,” The American Journal of Psychiatry Tweeted Friday.
The study looked at 4,000 students in the Montreal area during a four-year period, starting when the average research subject was roughly 13 years old.
Although researchers reportedly expected alcohol to have worse effects on the teens’ brains, they could not link teen alcohol use to any signs of brain damage.
“We initially suspected alcohol would have a bigger effect,” lead author and professor of psychiatry at the University of Montreal Patricia Conrod told USA TODAY.
The study also found that teens who used marijuana were more prone to drug addiction as they grew older.
###
The Weed Feed is a weekly column written by John Ross Ferrara.
The Weed Feed is a one-stop shop for the best local and national cannabis news.
Each week, original content will be posted to the page, as well as various other stories from around the country.
These aggregated stories are organized into six separate sections. The News (basic news), The Biz (financial news), The Life (features), The Game (sports), The Fame (celebrity), and the Grub (food).
The News
The Biz
The Life
The Game
The Fame
The Grub
The Humboldt Chronicles
- A Congressperson Dropped By
- A Chat With Jesse Duncan
- September NEWS ROUNDUP!
- Trad Ag Vs Canna Ag
- A Fabulous News Roundup
- All About Budtending
- A Conversation With Papa & Barkley
- Revisiting A Market Disruption
From the Outpost
- Two Arrested, Over Five Thousand Growing Cannabis Plants Eradicated During Old Fashioned Weed Bust at Redway Home
- Marijuana Enforcement Team Busts Illegal Indoor Grow on Freshwater Road, Sheriff’s Office Says
- YESTERDAY in SUPES: Board Grants Tax-Delinquent Weed Growers Another Reprieve, Receives a Decent Audit Report and Considers Organizational Shakeup
- WEED IS STILL LEGAL: California Supreme Court Tosses Out Appellate Court Decision Citing Federal Illegality
- Humboldt Planning Commission Approves Contentious Weed Farm Near Garberville, Despite Claims That Cannabis is No Longer Legal in California
- A State Appellate Court Says Weed is Illegal ‘Because Federal Law Says So.’ What Does That Mean for Humboldt?
- TODAY in SUPES: Board Suspends 2025 Weed Taxation, Directs Staff to Explore ‘Repeal and Replace’ Options for Measure S
- Humboldt County Officials Applaud as Gov. Newsom Issues Emergency Regulations On Intoxicating Hemp
The Feed
- Marijuana Business Daily: Wisconsin lawmakers shoot down governor’s marijuana legalization effort
- Marijuana Business Daily: New York quarantines $10 million worth of select cannabis products
- The Emerald Magazine : Growing Your Cannabis: A Regenerative Approach to Wellness and Self-Sufficiency
- Marijuana Business Daily: Arizona marijuana regulators flag major testing lab for multiple violations
- The Emerald Magazine : LivWell’s Mendo Breath: A New York Twist on a Cali Classic
- Marijuana Business Daily: Marijuana MSO Canopy Growth hit with class-action lawsuit
- Marijuana Business Daily: Trulieve marijuana cultivation workers in Arizona make labor history
- Marijuana Business Daily: Unchecked credit is choking the cannabis supply chain
- Marijuana Business Daily: Colorado marijuana sales fall by $20 million in early 2025
- Marijuana Business Daily: Pennsylvania lawmakers pass first adult-use marijuana legalization bill
(WHAT?)
CHOOSE YOUR COMMENT EXPERIENCE