Or maybe the causality is reversed, and it is not that weed causes higher alcohol consumption but rather people who would choose to consume more alcohol would a

Or maybe the causality is reversed, and it is not that weed causes higher alcohol consumption but rather people who would choose to consume more alcohol would also be more likely to choose to consume more weed? Maybe there is no causality and only correlation? Has this been explained in the article? Maybe having paid job makes you use weed less (for possible consequences of being high at work)? Maybe cannabis doesn't cause depression but rather it is just correlated for some other unknown reason? That's again, very poorly written article by a confused author who does not understand causality and correlation.