Body Clock Types and Substance Use Disorder: How Misaligned Daily Rhythms Relate to Mental Health and Illness Progress

Individuals with evening preference have a 1.55 times higher likelihood of being diagnosed with a substance use disorder compared to those with morning preference.

• Circadian rhythms influence important biological functions such as sleep and mood.
• Chronotype, or individual differences in circadian preference, may impact the risk of psychiatric disorders.
• Evening preference is linked to emotional dysregulation and impulsive behavior.
• The review synthesized clinical literature on the relationship between chronotype and substance use disorders.
• Evidence shows evening preference is associated with earlier onset and greater symptom severity of substance use disorders.
• Poorer treatment outcomes are also reported for individuals with evening preference.

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