Cannabis Use and Mental Health Problems

This paper investigates whether cannabis use leads to worse mental health. To do so, we account for common unobserved factors aecting mental health and cannabis consumption by modeling mental health jointly with the dynamics of cannabis use. Our main nding is that using cannabis increases the likelihood of mental health problems, with current use having a larger eect than past use. The estimates suggest a dose response relationship between the frequency of recent cannabis use and the probability of currently experiencing a mental health problem.