Clinical evidence

The science behind
the sound.

HealthTunes is built on peer-reviewed research. Every playlist is informed by clinical evidence, not wellness trends. Below is a summary of the published science — with full citations.

26.3%
Reduction in preoperative anxiety
Padmanabhan et al., Anaesthesia 2005
55
Randomized controlled trials in the
leading depression music therapy meta-analysis
2024–2025
Year of most recent systematic reviews
across anxiety, depression, and sleep

Anxiety

Measurable relief,
demonstrated in trials.

26.3%

Reduction in preoperative anxiety in a randomized controlled trial

Patients scheduled for surgery received music embedded with binaural beats prior to their procedure. Compared to a control group receiving standard care, those who listened showed a statistically significant 26.3% reduction in measured anxiety. The effect was comparable to benzodiazepine sedation without the pharmacological side effects.

Padmanabhan R, Hildreth AJ, Laws D. Anaesthesia, 2005. DOI: 10.1111/j.1365-2044.2005.04287.x

Music with auditory beat stimulation significantly reduces state anxiety in a general population

A randomized clinical trial using music combined with auditory beat stimulation — including binaural beats — demonstrated significant reductions in self-reported state anxiety across a general adult population. The findings extend the evidence base beyond surgical settings to everyday anxiety.

Mallik A, Russo FA. PLOS ONE, 2022. DOI: 10.1371/journal.pone.0259312

Systematic review confirms binaural beats reduce both anxiety and depression

A 2024 systematic review of multiple studies found consistent evidence that binaural beats reduce anxiety and depressive symptoms. Theta-frequency beats — 4 to 8 Hz — showed the strongest association with relaxation and anxiety reduction, which aligns with HealthTunes' playlist design for those conditions.

Baseanu ICC et al. Applied Sciences, 2024. DOI: 10.3390/app14135675

Depression

A non-pharmacological option
with consistent evidence.

55

Randomized controlled trials in the most comprehensive music therapy depression meta-analysis

A meta-analysis synthesizing 55 randomized controlled trials found that music therapy produces a significant, moderate-to-large reduction in depressive symptoms. Notably, music medicine — where music is prescribed without a therapist present — showed an even stronger effect than supervised therapy, making self-directed listening clinically meaningful.

Tang Q, Huang Z, Zhou H, Ye P. PLOS ONE, 2020. DOI: 10.1371/journal.pone.0240862

Music therapy significantly more effective than standard care for depression

A 2025 systematic review and meta-analysis of randomized controlled trials found music therapy significantly more effective than control conditions in reducing depressive symptoms, with a standardized mean difference of −0.97. The effect was consistent regardless of delivery method or clinical setting, suggesting robustness across contexts.

Lee YJ, Kim SJ, Yoon J, Lee JH. BJPsych Open, 2025. DOI: 10.1192/bjo.2025.10822

Sleep

Non-pharmacological sleep support
with a strong evidence base.

Music therapy significantly improves sleep quality in older adults

A systematic review and meta-analysis of randomized controlled trials confirmed that music therapy is a successful non-pharmacological intervention for improving sleep quality. Participants in music groups reported significantly better sleep than controls — particularly relevant for HealthTunes' elderly user segment, where sleep challenges are common and medication carries higher risk.

Chen CT, Fang CJ, Chang YJ et al. Journal of the American Geriatrics Society, 2021. DOI: 10.1111/jgs.17149

−0.79

Effect size in the most recent sleep meta-analysis (10 studies, 602 participants)

A 2025 systematic review and meta-analysis found that music interventions produce a statistically significant improvement in sleep quality in older adults, with a moderate-to-large standardized mean difference of −0.79. The consistency across 10 studies involving 602 participants strengthens the evidence considerably.

Multiple authors. PLOS ONE, 2025. DOI: 10.1371/journal.pone.0334356

Active research

Studies currently in progress.

HealthTunes is involved in several ongoing clinical collaborations. Results will be published as they become available.

Ongoing

Wellstar Health System

Healthcare worker wellness — studying HealthTunes' effect on stress, burnout, and sleep quality in clinical staff.

Ongoing

Chelsea & Westminster NHS

UK-based research collaboration examining music therapy outcomes in hospital patients across multiple conditions.

Ongoing

Dialysis patient study

Investigating the role of therapeutic music in reducing anxiety and discomfort during long-duration dialysis sessions.

Clinical disclaimer. The research cited on this page represents independent peer-reviewed studies. Results from published studies may not apply to all individuals. HealthTunes is a complementary wellness service and is not a substitute for professional medical advice, diagnosis, or treatment. If you have a medical condition, consult a qualified healthcare provider.

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