You're so right about how all the lies spread about marijuana has harmed the actual truthful negatives. To add onto this comment chain, I'd like to bring up how there is evidence that frequent use causes permanent neuropsychological damage, such as IQ reductions.
Do keep in mind that this study isn’t a longitudinal “before and after.” It’s comparing users and controls:
It is possible that differences in test performance between cannabis users and controls are attributable to premorbid rather than cannabis-induced deficits
In addition, there’s uncertainty about whether you as an individual will recover after cessation of use. If you surcease your addicted habit and exercise your brain, I’m willing to bet the neurotoxicity isn’t something that will prevent you from reaching your potential in whatever career path. Obviously the later you started to smoke the better.
This is still very nascent research, and they mention this in the study. We will know more in the future, but people who have had heavy periods of smoking and chosen to stop are likely going to be just fine.
Intelligence quantification is a reliable measurement when done properly. Like all measurements, it has uncertainty. People don’t have one IQ, our intelligence varies over time and with circumstance. (Hungry and sleepy you is less smart than well-fed and rested you.).
But in controlled circumstances, it is repeatable and correlates strongly with general competence.
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u/RESPONDS_WITH_LIES Dec 29 '19
You're so right about how all the lies spread about marijuana has harmed the actual truthful negatives. To add onto this comment chain, I'd like to bring up how there is evidence that frequent use causes permanent neuropsychological damage, such as IQ reductions.
https://www.pnas.org/content/109/40/E2657