Scientists offer a strong counter-position to the belief that cannabis causes psychosis, pointing out the difference between correlation and causation. They argue that smoke exposure from any source (including cigarettes) could explain the reported link between cannabis and psychosis.
A study in March found that daily use of high-potency cannabis is “strongly linked to the risk of developing psychosis.” But on June 1st, six scientists published a study in The Lancet, a British medical journal, that disputed this claim. The authors of the study note that correlation doesn’t equal causation. In other words, people with schizophrenia may be more likely to use cannabis, but there’s no evidence to suggest that it works the other way around. #psychosis #schizophrenia The news: http://bit.ly/2WeuM9E The articles & academic commentary: http://bit.ly/2Wf04wT
Benjamin Caplan, MDDoes cannabis cause psychosis? Evidence is lacking, scientists say