It's been a pretty good run for legal weed these past few years. Recreational use is legal in 9 states and some form of medical use is permitted in 29 states. At least 3 states have legalization questions on their November ballots.
One of the main arguments for keeping weed on the schedule 1 drug list has been the supposed cognitive effects on users (particularly young people). These effects were assumed to be true even without longitudinal studies proving it.
A new metadata analysis in JAMA (Journal of the American Medical Association) suggests that these effects are small at most. This is a pretty big deal as JAMA is the premier medical journal in the US.
clicky
The moral of the story... Smoke it if you got it! Your brain apparently won't turn into a fried egg.
Studies can prove whatever you want, depending on what you want.
I can only tell you this from personal experience: pretty much every person Ive known over the last 30 years who have used regularly, it made them stupid and lazy.
Like, very consistently.
In my own immediate family and my brothers kids, all but 3 individuals are college graduates.
Yep, those 3 were the only ones who smoked pot.
Believe what you want and have fun.
Not me. I enjoy life enough without having to seek an alternate reality.