I was reading even before the Covid issues metal i

I was reading even before the Covid issues metal illness inflicted 17% of the US population. I think most drug addiction like opiods is people self medicating for underlining issues. I read a article that young people that consume large amount of THC have a 6 point IQ reduction. Hi potency THC can remain in the body longer. So that kid microdosing could have been high almost all his waken hours. I think if you substituted alcohol and was drunk all the time it's been known to hurt IQ also. This would also cause the underlining Mental illness condition to worsen That's Why i think that formulated and lab tested products and dosage could fix this problem.
I have a case of chicken and the egg.
What should you correct first