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Sleep Quality
Sleep · Moderate evidence
Evidence
50
Impact
35
Continuity and depth of sleep, independent of total hours in bed.
- Studies
- 4
- RCTs
- 1
- Meta-analyses
- 3
Research summary
- The evidence base for this topic is comparatively weak and diffuse: available studies address related but distinct subjects, such as loneliness and sleep, herbal supplements (ashwagandha, lemon balm) and psychological well-being, and gut-brain-axis nutrition, none of which directly test structured interventions to improve sleep quality itself.
- One randomized trial found aerobic exercise combined with sleep hygiene education improved self-reported sleep in older adults with insomnia, offering some direct support.
- Overall, while poor sleep quality is well recognized as clinically important, the specific evidence available here is preliminary and indirect, so conclusions about how to reliably improve sleep quality (independent of duration) should be considered tentative.
Cognitive FunctionMood & StressGut Health
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