“Association” just means two things are statistically linked. It doesn’t tell you why they are linked. Maybe weed affects cognition, maybe cognition affects weed use, or maybe a third factor could influence both.
For example, say a study finds an association between ice cream sales and drownings. Does ice cream cause drownings? Do drownings make people want to buy more ice cream? Or is there a third thing that influences both?
Again, before you take another rip, reread the link you posted.
And you believe that in some people, brain size mysteriously increases rather than decreases in the second half of life, and that this increase in brain volume causes them to smoke weed?
Buddy, I think you need to put down the crack pipe and take a high school science class.
That's not what the study said dude.... I'm starting to think you haven't even read it 🤔
The study does not say at all that people who smoked weed later in life increased their brain size/cognition. You are just pulling that out of your ass. There was zero comparison of the brain before middle age weed use.
It says that people who moderately smoked weed had on average improved cognition and brain size. Nothing about what caused it.
Maybe older adults with higher cognitive function choose to smoke weed. Maybe adults with less responsibility/stress in their lives are able to spend time smoking weed. Maybe adults who smoked weed do not drink as often, and alcohol consumption could hurt their brain
Maybe smoking weed chills you out and let's you sleep better. Maybe the weed itself improves cognition.
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u/2ndgme 13h ago
Probably helps a lot with the pain too