Longitudinal Interplay Between Alcohol Use, Mood, and Functioning in Bipolar Spectrum Disorders

Area of Science:

• Psychiatry
• Neuroscience
• Clinical Psychology

Background:

• Alcohol use disorder (AUD) frequently co-occurs with bipolar disorder (BD), significantly worsening patient outcomes.
• Concurrent treatment for BD and AUD is under-researched and clinically neglected, necessitating a deeper understanding of their interplay.
• Characterizing the dynamic relationship between alcohol use and mood symptoms in BD is crucial for improving patient care and prognosis.

Purpose of the Study:

• To investigate longitudinal alcohol use patterns in individuals diagnosed with bipolar disorder (BD).
• To examine the temporal associations between alcohol consumption, mood states (depression, mania/hypomania), anxiety levels, and overall functioning over time.
• To identify how these factors influence each other longitudinally in a BD cohort.

Main Methods:

• A cohort study utilizing data from the Prechter Longitudinal Study of Bipolar Disorder (PLS-BD).
• Inclusion criteria: diagnosis of Bipolar I (BDI) or Bipolar II (BDII) disorder with a minimum of 5 years of study participation.
• Data collection spanned February 2006 to April 2022, with follow-up durations ranging from 5 to 16 years. Standardized assessments measured alcohol use, mood symptoms, anxiety, and functioning.

Main Results:

• Problematic alcohol use correlated with increased depressive and manic/hypomanic symptoms and decreased workplace functioning in the subsequent six months.
• Conversely, elevated depressive or manic/hypomanic symptoms did not predict increased future alcohol use.
• These associations were more pronounced in Bipolar II disorder compared to Bipolar I disorder. Alcohol use showed no significant association with anxiety levels over time.

Conclusions:

• Alcohol use, irrespective of AUD diagnosis, is associated with mood instability and impaired work functioning in individuals with BD.
• Increased mood symptoms in BD do not appear to drive subsequent alcohol use.
• There is a critical need for integrated, dimensional, and longitudinal assessment and management strategies for alcohol use within BD research and clinical practice.