- The Weed Blog https://www.theweedblog.com

First Of Its Kind Study Concludes That Using Marijuana As A Teen Does Not Lower IQ


Teen Age Dope SlavesMarijuana opponents often say that consuming marijuana makes a person dumber. Many opponents specifically point towards marijuana use as a teenager and try to link it to a lower IQ later in life. Those claims almost always point to a long debunked study that concluded that marijuana use as a teenager would lower a person’s IQ 8 points later in life. The results of another study were recently released which concluded that using marijuana as a teenager does not lower one’s IQ. Per Oregon Live:

If smoking pot harmed test scores, the researchers reasoned, people who’d smoked more pot should show poorer trends than those who’d smoked less. But that’s not what the data revealed. Among users, those who’d smoked more than 30 times or used it daily for more than a six-month stretch didn’t do worse.

The study also looked at 290 pairs of twins in which one had used marijuana and the other had not. The members of each pair had grown up together and 137 sets were identical twins so they shared the same DNA. Again, the pot users did not fare worse than their abstaining twin siblings.

So, the researchers concluded, pot smoking itself does not appear responsible for declines in test scores. Isen noted, however, that the work says nothing about other potential harmful consequences of smoking marijuana in adolescence.

Some of the smartest people that have ever lived have consumed marijuana while growing up. I personally know people that used cannabis as teenagers (and still do to this day) that I would consider to be geniuses. Marijuana does not make a person dumber, and in fact, can boost creativity. There are countless testimonies from smart, successful people out there attesting to how marijuana has improved their lives, and not that marijuana has hurt their brains. Reefer madness debunked by science, again.


About Author

Johnny Green


  1. Non smokers who live around smokers are just as likely to die of cancer by being exposed to 2nd hand smoke.

  2. Non-smokers (of tobacco) never got cancer at the same rate as smokers. ( I know you’re just trolling, but please try to do a better job at it :-)

  3. This was a study on twins. The twin who smoked pot lost 4 iq points and the
    twin who didnt smoke pot also lost 4 iq points. Maybe the non pot
    smoking twin was affected from 2nd hand pot smoke. Its the same argument tobacco companies used in the 70s and 80s about how non smokers get lung cancer too. So it cant be the cigarettes.

  4. There’s a lengthy fear-mongering article from a former Bush administrator of ONDCP in need of commentary smack-down. I’ve done my bit already vis-a-vis the IQ issue, but there are plenty of other untruths and distortions awaiting your attention.

    http://newsok.com/article/5473307 “Hudson Institute Fellow: Marijuana’s Toll on Colorado’s Kids”

  5. David Yoseph Schreiber on

    If you search psychedelics on YouTube, you will see a large number of Ph.D s and highly intelligent people who like cannabis and other entheogens. It would seem that marijuana attracts people with who like intellectual stimulation and it in facts raises their intelligence. Prohibitionists tend to be rigid and mediocre. Avid users often are concerned about things like self knowledge and saving the planet. Ardennt prohibitionist tend to be sleazy and corrupt.

Leave A Reply