While I agree with your general sentiment, this is not a great study. They did not control for weight, physical activity, drug use (other than tobacco and alcoh

While I agree with your general sentiment, this is not a great study. They did not control for weight, physical activity, drug use (other than tobacco and alcohol), socioeconomic status, etc.... When you take people who have substance abuse disorders, you have a grab bag of related behaviors that will be hard to correct for, and in this study they barely tried. In other words, what percentage of daily MJ users do you think have diagnosed cannabis use disorder and how do you think those people's lives look compared to daily users who are not diagnosed with this label? There are other meta-analyses on the same subject which suggest no correlation [[1](https://www.sciencedirect.com/science/article/abs/pii/S0003996915300418 https://www.sciencedirect.com/science/article/abs/pii/S00039...)] [[2](https://link.springer.com/article/10.1007/s00508-023-02303-3 https://link.springer.com/article/10.1007/s00508-023-02303-3)]. The only really regular correlations I've seen in the literature are related to a type of testicular cancer (TGCT). I hope we can get higher quality research on this subject now that the legal issues are starting to be less onerous, it would be great for people to know the long term effects of MJ use.