Cannabis use disorder linked to 57% higher suicide risk, a concern that won't go away

This large-scale study examined the relationship between cannabis use disorder (CUD) and suicidal ideation among U.S. adults over a 10-year period (2014-2023), analyzing data from over 415,000 survey respondents. The researchers found that adults with CUD had approximately 57% higher odds of experiencing past-year suicidal ideation compared to those without the condition, after accounting for other demographic and health factors. This elevated risk remained consistent throughout the entire decade studied.

Notably, despite significant changes in the cannabis landscape—including widespread legalization, increased product potency, and shifting public attitudes toward cannabis—the strength of the association between CUD and suicidal ideation did not change over time. The association remained stable across all demographic groups examined, including differences by sex, age, and race/ethnicity. The researchers expected the relationship might weaken as cannabis became more normalized and accepted socially, but their findings suggest this did not occur.

These findings have important implications for mental health and substance use policy. The persistent link between cannabis use disorder and suicide risk indicates that mental health screening and support should remain a priority for individuals struggling with problematic cannabis use, regardless of the changing legal or social context around cannabis. The results suggest that liberalization policies and changing perceptions of cannabis harm have not altered the fundamental psychiatric risks associated with cannabis use disorder, underscoring the need for continued clinical attention and intervention.