Have a source? I think weed should be legal, but lets not pretend that its a miracle drug thats bullied by the medical community.
" Clinicians agree that cannabis use can cause acute adverse mental effects that mimic psychiatric disorders, such as schizophrenia and bipolar disorder. Although there is good evidence to support this, the connections are complex and not fully understood."
" Epidemiological studies have shown that as the frequency of cannabis abuse increases, so does the risk for a psychotic disorder such as schizophrenia.
1 Studies have also shown that cannabis is the most commonly abused drug among those diagnosed with bipolar disorder.
1"
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2811144/