Risk factors for cannabis use disorders and cannabis psychosis in Japan: Second report of a survey on cannabis-related health problems among community cannabis users using social networking services.
Yuji Masataka, Takeshi Sugiyama, Yoshiyuki Akahoshi, Toshihiko Matsumoto
Neuropsychopharmacology reports March 1, 2023 DOI: 10.1002/npr2.12307 via PubMed
Summary
AI-generated from the abstractAmong 3142 Japanese cannabis users surveyed online in 2021, those who started using cannabis at a younger age, had a family history of mental health problems, had psychiatric disorders before using cannabis, or used cannabis products other than dry flower were more likely to develop cannabis use disorders. Cannabis psychosis was linked to younger age at first use and family history of mental health problems. The causal direction of these associations remains unclear.
Study at a glance
| Characteristics | Cross-sectional survey Peer reviewed |
|---|---|
| Sample size | 3,142 |
| Population | Japanese users of social network services who had used cannabis within the preceding year |
| Topics | Cannabis |
| Keywords | Japan Marijuana abuse Mental health Psychotic disorders |
| Key finding | Risk factors for cannabis use disorders include younger age of initiation, family history of mental health problems, pre-existing psychiatric disorders, and use of non-dry-flower cannabis products; for cannabis psychosis, younger initiation and family history of mental health problems are risk factors. |
Abstract
To determine the risk factors for cannabis use disorders and cannabis psychosis in Japan based on a 2021 online survey among Japanese users of social network services. The 3142 respondents who had used cannabis within the preceding year were categorized into two groups based on the development of cannabis use disorder and/or cannabis psychosis. Analyses were performed to determine these conditions' risk factors. Multivariate analysis revealed that factors significantly associated with cannabis use disorders were "cannabis-use initiation at a young age" (p = 0.004, OR: 0.951, 95% CI [0.920-0.984]), "family history of mental health problems" (p < 0.001, OR: 1.988, 95% CI [1.545-2.556]), "psychiatric disorders preceding cannabis use" (p = 0.039, OR: 1.672, 95% CI [1.026-2.722]), and "use of cannabis products other than dry flower" (p < 0.001, OR: 2.725, 95% CI [1.844-4.026]). Factors significantly associated with cannabis psychosis were "cannabis-use initiation at a young age" (p = 0.011, OR: 0.888, 95% CI [0.811-0.973]) and "family history of mental health problems" (p = 0.002, OR: 2.531, 95% CI [1.400-4. 576]). Risk factors for problematic cannabis use were cannabis initiation at a young age, pre-cannabis psychiatric disorders, family history of mental health problems, and the use of cannabis products other than dry flower. However, the causal relationship among these factors remains ambivalent.