In young adults with bipolar disorder, a brain response to stress was linked to less cannabis use and better mood outcomes
Young adults with bipolar disorder showed increased amygdala-prefrontal connectivity during stress, and this brain response was associated with less frequent cannabis use and shorter, less severe depression over one-year follow-up.
Quick Facts
What This Study Found
People with bipolar disorder showed increased right amygdala-rostral prefrontal cortex connectivity during stress compared to controls. Greater connectivity increase was associated with less frequent cannabis use and prospectively with shorter duration and lower severity of depression symptoms over one year.
Key Numbers
42 participants (19 bipolar, 23 controls). Mean age 21.4 years. Greater right amygdala-rPFC connectivity during stress in bipolar group. This connectivity associated with less cannabis use and better depression outcomes over 1-year follow-up.
How They Did This
fMRI study of 42 young adults (19 with bipolar disorder, mean age 21.4) during the Montreal Imaging Stress Task. A subset of bipolar participants completed 1-year follow-up assessments for mood symptoms and substance use.
Why This Research Matters
Understanding how stress response circuits relate to both cannabis use and mood outcomes in bipolar disorder could identify biomarkers for disease course and potential intervention targets.
The Bigger Picture
The finding that stronger prefrontal regulation of the amygdala during stress correlates with both less cannabis use and better depression outcomes suggests a shared neural mechanism underlying self-regulation in bipolar disorder.
What This Study Doesn't Tell Us
Very small sample (19 bipolar participants). Preliminary associations, not causal. Follow-up subset even smaller. Cannabis use measured as correlate, not experimentally manipulated. Multiple comparisons increase false positive risk.
Questions This Raises
- ?Does cannabis use weaken the prefrontal stress response in bipolar disorder, or do those with stronger responses naturally use less?
- ?Could stress management interventions strengthen this circuit and reduce both cannabis use and depression?
Trust & Context
- Key Stat:
- Stronger stress response linked to less cannabis use and less depression
- Evidence Grade:
- Small pilot neuroimaging study with preliminary one-year follow-up associations.
- Study Age:
- Published in 2022.
- Original Title:
- Neural functional connectivity changes to psychosocial stress in young adults with bipolar disorder and preliminary associations with clinical trajectories.
- Published In:
- Bipolar disorders, 24(3), 298-309 (2022)
- Authors:
- Kirsch, Dylan E(2), Preston, Alex, Tretyak, Valeria, Le, Vanessa, Weber, Wade, Strakowski, Stephen M, Lippard, Elizabeth T C
- Database ID:
- RTHC-03967
Evidence Hierarchy
Enrolls participants and follows them forward in time.
What do these levels mean? →Frequently Asked Questions
How does cannabis relate to bipolar disorder outcomes?
In this small study, young adults with bipolar disorder who used cannabis less frequently showed a stronger prefrontal brain response to stress, which was also linked to shorter and less severe depression over one year.
Does the brain handle stress differently in bipolar disorder?
Yes. People with bipolar disorder showed increased connectivity between the amygdala and prefrontal cortex during stress, a pattern not seen in controls, suggesting different stress processing circuitry.
Read More on RethinkTHC
Cite This Study
https://rethinkthc.com/research/RTHC-03967APA
Kirsch, Dylan E; Preston, Alex; Tretyak, Valeria; Le, Vanessa; Weber, Wade; Strakowski, Stephen M; Lippard, Elizabeth T C. (2022). Neural functional connectivity changes to psychosocial stress in young adults with bipolar disorder and preliminary associations with clinical trajectories.. Bipolar disorders, 24(3), 298-309. https://doi.org/10.1111/bdi.13127
MLA
Kirsch, Dylan E, et al. "Neural functional connectivity changes to psychosocial stress in young adults with bipolar disorder and preliminary associations with clinical trajectories.." Bipolar disorders, 2022. https://doi.org/10.1111/bdi.13127
RethinkTHC
RethinkTHC Research Database. "Neural functional connectivity changes to psychosocial stres..." RTHC-03967. Retrieved from https://rethinkthc.com/research/kirsch-2022-neural-functional-connectivity-changes
Access the Original Study
Study data sourced from PubMed, a service of the U.S. National Library of Medicine, National Institutes of Health.
This study breakdown was produced by the RethinkTHC research team. We analyze and report published research findings without making health recommendations. All interpretations are based solely on the published abstract and study data.