European psychiatry : the journal of the Association of European Psychiatrists

Connections between sleep patterns and body weight in people with bipolar disorder

Circadian Biology Weekly Brief ↗PubMed ↗DOI ↗

Updated

Abstract

In patients with bipolar disorder, higher body mass index (BMI) is associated with significantly lower sleep efficiency.

  • A significant correlation exists between higher BMI and lower sleep efficiency in individuals with bipolar disorder (P=0.009).
  • Higher BMI is also associated with shorter total sleep time (P=0.01) and longer sleep onset latency (P=0.05) in this population.
  • Increased BMI correlates with a higher fragmentation index (P=0.008) and greater inter-day variability in sleep (P=0.05).
  • Patients with bipolar disorder show a higher total score on the Pittsburgh Sleep Quality Index (PSQI) with increased BMI (P=0.004).
  • These findings may reflect exaggerated sleep disturbances in individuals with bipolar disorder compared to healthy controls.

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