A systematic review , a number of very important points in this very fine paper . Lancet Psychiatry is one of the premier medical journals out there and they evaluated a huge number of studies . They actually looked at more than 4000 studies .
So if this isn't clear enough , just from my statements , I'd like to point to a particular paper . This is one of the more impactful papers in this area in recent years , this is a paper published in Lancet Psychiatry in 2022 title is Association of Cannabis Potency with Mental ill health and addiction . A systematic review , a number of very important points in this very fine paper .
I'm pulling some phrases directly from the paper heavy cannabis use , meaning cannabis use more frequent than twice per week has been associated with four times the risk of psychosis later in life . In particular , schizophrenia and bipolar like episodes . Now we've done an episode on bipolar disorder so called bipolar depression .
They selected the ones that were only the most rigorous in terms of study design and analysis and rigor of conclusions . And they looked at how early use of cannabis impacted later probability of development of psychosis and other psychiatric conditions . And the takeaways from this study are very clear .
And the takeaways from this study are very clear . First of all , chronic cannabis use , so more than twice per week has consistently been associated with mental health disorders . I'm pulling some phrases directly from the paper heavy cannabis use , meaning cannabis use more frequent than twice per week has been associated with four times the risk of psychosis later in life .
