Improving sleep quality leads to better mental health: A meta-analysis of randomised controlled trials

🤖 Plain-English Summary

The extent to which sleep is causally related to mental health is unclear. Our findings suggest that sleep is causally related to the experience of mental health difficulties.

🔑 Key Findings

• One way to test the causal link is to evaluate the extent to which interventions that improve sleep quality also improve mental health.
• We conducted a meta-analysis of randomised controlled trials that reported the effects of an intervention that improved sleep on composite mental health, as well as on seven specific mental health difficulties.
• 65 trials comprising 72 interventions and N = 8608 participants were included.

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