How Soundscapes Affect Sensory Health

A systematic review of 180 studies has confirmed that soundscapes have a profound effect on the well-being of people with sensory vulnerabilities. The paper, published in the Journal of Multidisciplinary Healthcare in 2026, found consistent links between poor acoustic environments and worse outcomes in health, cognitive function, and emotional state. Led by Jingyi Mu, Zhe Qin, and Tian Wang from the Harbin Institute of Technology, the review provides one of the most comprehensive overviews of how noise and sound design impact sensitive populations (PMID: 42273356).

How the Evidence Was Gathered and Assessed

The research team followed the PRISMA 2020 guidelines for systematic reviews. They searched four major scientific databases—PubMed, Web of Science, Scopus, and Embase—for peer-reviewed studies published between 2000 and 2025. Their focus was on populations considered “sensory-vulnerable,” which included older adults, children, individuals with hearing loss, and patients in clinical settings. To evaluate the strength of the evidence they found, the authors used the GRADE approach, a standard method for rating the certainty of evidence in medical and public health research.

Acoustic Environments Worsen Health, Thinking, and Mood

The central finding across the 180 included articles was clear: unfavorable acoustic environments are generally associated with poorer outcomes. “Unfavorable” typically means environments with intrusive, unpredictable, or uncontrollable noise, poor speech intelligibility, or a lack of beneficial sound masking.

The negative effects fell into three broad categories. For health, poor soundscapes were linked to increased disease risk, worsened clinical recovery, and disrupted sleep. In terms of cognition, studies showed reduced performance on tasks, impaired learning, and challenges with speech perception. On an emotional level, noisy or chaotic acoustic settings contributed to stress, annoyance, and a lower overall sense of well-being.

Different Groups, Different Vulnerabilities

A critical insight from the review is that the primary impact of sound differs depending on the population.

• Older Adults: Research here concentrated on how noise exposure increases the risk of diseases like cardiovascular illness and dementia, and affects general cognitive status.
• Children: The evidence primarily highlighted cognitive and learning-related impacts. Poor classroom acoustics can directly hinder a child’s ability to concentrate, process information, and achieve academically.
• People with Hearing Loss: For this group, the dominant issues were speech perception difficulties and increased auditory effort or burden. A noisy room isn’t just annoying; it can completely block communication, leading to fatigue and social withdrawal.
• Patient Populations: In hospitals and clinics, studies showed that uncontrolled noise negatively affects clinical recovery rates, severely disrupts sleep quality, and worsens emotional well-being during treatment.

This aligns with other research on how conditions like hyperacusis and misophonia create specific auditory burdens.

A Call for Better Acoustic Design in Key Settings

The authors state that their findings offer useful implications for the acoustic design of specific environments. For schools, the evidence supports investment in sound-absorbing materials and classroom layouts that minimize noise to protect children’s learning. In hospitals, the review strengthens the case for noise-reduction protocols, quiet zones, and the thoughtful use of sound masking to improve patient sleep and recovery—a concept explored from a different angle in our article on music in surgical settings. For nursing homes, design should aim to reduce chaotic noise while maintaining clear pathways for communication to support both the health and social engagement of older residents.

Strong Patterns, But Evidence Certainty Remains Low

Perhaps the most important caveat from this large review is about the quality of the underlying science. Using the GRADE system, Mu and colleagues rated the certainty of evidence (CoE) for most outcome categories as “low” or “very low.” This means that while the pattern of association is strong and consistent across many studies, the individual studies themselves often have limitations, such as small sample sizes or observational designs that cannot prove cause and effect.

This low certainty rating is a direct call to action. It underscores a significant gap in high-quality, controlled studies in this field. The authors conclude that further rigorous research is essential to strengthen the evidence base and ultimately improve the well-being of sensory-vulnerable populations through better sound management.