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Links between sleep and body mass index in bipolar disorders: An exploratory study
Connections between sleep patterns and body weight in people with bipolar disorder
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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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