Marijuana: Heavy Users Risk Changes to Brain

A new study finds that heavy marijuana use by adults could have long-term effects on the brain. What kinds of effects? WSJ’s Jason Bellini has #TheShortAnswer.

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50 Comments

  1. I'm sofa king hungry! on July 26, 2019 at 7:13 pm

    If marijuana was harmful, I think our ancestors using marijuana the last 5000 years would have felt the impact long ago.



  2. mopthermopther on July 26, 2019 at 7:13 pm

    Marijuana affects your wain.
    err, no. I meant to say brain.
    That’s right brainy-wainy wain
    brain wain brain 🧠 πŸ”ͺ🧠πŸ”ͺ



  3. Axell Lopez on July 26, 2019 at 7:15 pm

    You only have sleep problems when u go on a tolerance break



  4. Bubby Flippu on July 26, 2019 at 7:17 pm

    Bruh anything and everything will change your brain.



  5. Christopher Baez on July 26, 2019 at 7:20 pm

    Risks of smoking marijuana more happy and relaxed, anti-inflammatory stay away you don’t want that. πŸ˜‚



  6. Paul Leaner on July 26, 2019 at 7:20 pm

    My car accident did unrecoverable brain damage. Nicotine is addictive physically and mentally.



  7. Daniel Torres on July 26, 2019 at 7:24 pm

    WSJ is not real journalism



  8. R W on July 26, 2019 at 7:25 pm

    Whoever created man created herbs. Studies are limited God is boundless



  9. popeye steve on July 26, 2019 at 7:26 pm

    Its a load of bollocks the reason they want to do more research has to do with tenure at certain universities its all about the dollar



  10. Sasha Cordon on July 26, 2019 at 7:29 pm

    Deff true I’ve been smoking for 12 years and now just started to taper of because now it gives me anxiety and I get depressed the next day



  11. R A on July 26, 2019 at 7:29 pm

    There is a relevant link between psychosis and weed… maybe moderations key bc too much of anything can kill you



  12. user name on July 26, 2019 at 7:29 pm

    The withdrawals are real son



  13. Shawn on July 26, 2019 at 7:30 pm

    I started smoking pot when I was 11 yo, I’m now 60 ……..um…..what was I saying…….oh , it’s all good



  14. Spuddallysprinks on July 26, 2019 at 7:31 pm

    Vaping weed is much safer. But still gets u high.



  15. legalise nature on July 26, 2019 at 7:36 pm

    Pot shouldnt be smoked because it’s a carcinogen just like cigarettes! We should be eating it with dinner



  16. Greg Kuntz on July 26, 2019 at 7:36 pm

    I never thought that I would be writing this but I have been smoking for a long time daily for about 3 months now.
    I feel very lazy and tired a lot. I smoke very good quality marijuana but it’s kind of destroying my life. When I don’t smoke it I feel very irritable and mean. However it makes me feel very tired and unmotivated. I’m not telling anyone what to do.I an curious if anyone else has or is going through the same thing? Thank you



  17. transcendental veganism on July 26, 2019 at 7:37 pm

    why are people upset he’s an objective journalist he even said "more science is needed"



  18. Mr Ginga on July 26, 2019 at 7:38 pm

    Im a long term smoker and of coure there are side effects. Nothing as bad as drinking alcohol in my opinion. I for one do look for immediate rewards. Well now see if i can change this while still smoking



  19. Marc Neblett on July 26, 2019 at 7:40 pm

    Never stop researching overseas been curing every cancer since 1960 our drug companies not going to allow that.only president trump can change this.



  20. Rune Heidenreich on July 26, 2019 at 7:41 pm

    You can use marijuana daily. Ev n 2-3 times per day but it’s good to take a break every now and then so you don’t become saturated . 11 times a day is ridiculous. It’s not crack ! But I don’t think marijuana is really harmful to the brain .



  21. Rafael Arandas on July 26, 2019 at 7:42 pm

    Is this drug really this popular around this world outside the USA? Just curious…..



  22. Ben Snider on July 26, 2019 at 7:43 pm

    Doctors and negligence caused my brain damage and neurological issues ! Oh wow !! Unreal. Doctors who prescribe. Blood pressure meds when no blood pressure problems ! I can’t take doctors seriously about this when they ignored literally ignored
    My brain cyst , csf leak , disc bulges , loss of eye sight ! And literally caused all
    By negligence



  23. Beanmachine91 on July 26, 2019 at 7:44 pm

    marijuana made me want to beat up people and animals!



  24. Grzegorz Golebiowski on July 26, 2019 at 7:44 pm

    Here is answer
    https://youtu.be/rtHO4EFmbIk
    Peace&Love



  25. NeitouSama on July 26, 2019 at 7:45 pm

    Whatdya know, no citations in the description.



  26. richard abbott on July 26, 2019 at 7:46 pm

    maybe I’m mistaken but doesn’t extended use of any substance change your brain



  27. bkohler89 on July 26, 2019 at 7:47 pm

    This is why i use cbd instead



  28. jehad abu al-rrub on July 26, 2019 at 7:48 pm

    I agree with one thing, and that it causes an anxiety and paranoia on the long term, besides that ,nothing is bad about it !
    not considering the harms of smoking itself.



  29. John Paul on July 26, 2019 at 7:48 pm

    Boi why he look like a scuffed older version of Andy and from toy story



  30. I'm sofa king hungry! on July 26, 2019 at 7:48 pm

    What about the government studies in the 70’s on marijuana? I thought they said marijuana causes brain damage in monkeys deprived of oxygen for five minutes and only given marijuana smoke. Who can you trust?



  31. Janet Baker on July 26, 2019 at 7:48 pm

    Because guys are really desperate to make pot look bad aren’t they! What a bunch of BS.



  32. Shawn on July 26, 2019 at 7:49 pm

    Seriously though, I think the thc content of pot today is way higher than years ago. Like hawai’i 78 or Sweet lady of Waiāhole has a thc of 12% , that was really good smoke back then. This level is all a person needs not the 24 %+ that peeps smoke. My opinion .



  33. Mrs. on July 26, 2019 at 7:51 pm

    experts have been unable to make ANY definite statements….hmm maybe thats because ol pharma does not plan on losing their monopoly on every single Americans life.



  34. John Yeager on July 26, 2019 at 7:53 pm

    Ant nuttin wong wit mi dain



  35. Carl Parish on July 26, 2019 at 7:54 pm

    Alcoholic beverages are more dangerous.



  36. Lemmy lame on July 26, 2019 at 8:00 pm

    Its okay. cause i only live once lol.



  37. Kenneth Butler on July 26, 2019 at 8:00 pm

    Some doctors worry a lifetime of smoking pot can cause severe consequences, with pain from irreversible brain damage. Fortunately we now have medical marijuana to treat those symptoms effectively.



  38. shoot_the_moon on July 26, 2019 at 8:01 pm

    says the persons that rob the US people



  39. Amiko_Garcia187 on July 26, 2019 at 8:04 pm

    This dude’s voice makes me wanna go on a killing spree



  40. mel saint on July 26, 2019 at 8:06 pm

    You can’t deny neurology. Subjective opinions do not invalidate actual brain scans.



  41. Curtis Fields on July 26, 2019 at 8:06 pm

    my mom said eventually i may die from weed cuz its laced yea i wanna dye my hair and lace the blunt wit keif from my grinder



  42. Colin Powell on July 26, 2019 at 8:08 pm

    My brain must be fucked then. Lol.



  43. D foster on July 26, 2019 at 8:08 pm

    That looks like matt Smith at 2:30 ish



  44. Misterlaxx d on July 26, 2019 at 8:09 pm

    More susceptible to short term gratification…. This is why North Korea allows weed… It’s a wonderful drug for being so benign, but that fact that instant gratification is a consequence of habitual usage is proof that it’s a catalyst for mind control



  45. Redtooth 75 on July 26, 2019 at 8:10 pm

    Just like with alcohol, cigarettes, sugar, and many other things there is the potential for abuse. Recreational use has little to no long term harmful effects. If you abuse it of course there will be harmful effects on the body. A person who drinks a beer or two a week will not see any harmful effects from it. But a person who drinks a bottle of whiskey every two days will have severe damage to their body. Its the same with weed, if you smoke a bowl or two a week your fine, if you smoke an ounce a week you have a problem.



  46. godforever27 on July 26, 2019 at 8:12 pm

    now do this test with pharmaceutical antidepressants. from experience pharmaceutical ssris cause significantly more problems with memory and make you flatline emotionally. weed never caused me pyschosis but a epilepsy drug prescribed did. i was up for 2 to 3 weeks straight but it only felt like 3 days. i stopped breathing and almost died. natural cannabis with lower thc around 12% thc with equal cbd is perfect and more medicinal then weed sprayed with insecticides, genetically engineered to have no cbd thus way higher thc. when i used to smoke a ton of weed i was more able to live my life, focus better, have more drive to do things, and pain free. a lot of todays weed is narcotic and not medicinal anymore which is causing more anxiety and side effects.



  47. Joe Dirt on July 26, 2019 at 8:12 pm

    Oh I’m not addicted to weed if you do something everyday your addicted



  48. John Calderon on July 26, 2019 at 8:12 pm

    It’s not for everyone, simple as that



  49. E.T GropeHome on July 26, 2019 at 8:12 pm

    11x a week is enough to go crazy?!

    I smoke every 50 minutes



  50. jesse bluedog on July 26, 2019 at 8:12 pm

    its either weed or im railing a line of meth to take the edge off. sooooooo weed it is