Potential problems include harms from prenatal exposure and unintentional childhood exposure; decline in educational or occupational functioning after early adolescent use, and in adulthood, impaired driving and vehicle crashes; cannabis use disorders (CUD), cannabis withdrawal, and psychiatric comorbidity. That’s a long list of the potential harms in using marijuana. The last line of the paper’s introduction reads, “The public, health professionals, and policy makers would benefit from education about the risks of cannabis use, the increases in such risks, and the role of marijuana laws in these increases.”
https://www.narcononarrowhead.org/blog/what-about-marijuana-use-is-addictive.html