Noise Levels and Hearing Health in Ghana

A study conducted in Kumasi, Ghana, found that noise levels at social events consistently exceed safe limits, with pubs, churches, weddings, and funerals producing average levels between 70 and over 110 decibels (dB). This research from Kwame Nkrumah University of Science and Technology (KNUST) provides a stark measurement of the auditory environment in a rapidly urbanizing area, directly linking common social activities to significant noise exposure.

## How Researchers Measured Urban Social Noise

Led by Lyndon N.A. Sackey and his team, the study aimed to quantify an often-overlooked source of urban pollution. The researchers selected five sub-metropolitan areas within Kumasi: Nhyiaeso, Bantama, Subin, Manhyia North, and Manhyia South. They took noise measurements at a variety of social venues, including churches, pubs, wedding ceremonies, and funeral gatherings.

To build a complete picture, the team didn’t just record sound levels. They also collected data on environmental variables like temperature, humidity, and elevation at each site to see if these factors changed how noise propagated. Alongside the physical measurements, they conducted surveys to assess public awareness, attitudes, and perceptions regarding noise pollution from such events. This mixed-method approach allowed them to connect objective data with community sentiment.

## Social Events as Major Noise Pollution Sources

The findings, published in *Scientific Reports* (DOI: 10.1038/s41598-026-61794-y; PMID: 42432183), were clear and concerning. Every type of social event produced noise levels that violated the Ghana Environmental Protection Agency’s (EPA) recommended daytime limit of 55 dB for residential areas.

Pubs registered the highest continuous noise emissions. Churches and funerals, however, showed more variable patterns, with levels spiking during specific activities like worship sessions or musical tributes, often reaching equally high peaks. The study recorded an overall range from 70 dB to over 110 dB. For context, 70 dB is similar to the noise of a vacuum cleaner, while sustained exposure to sounds above 85 dB can cause permanent hearing damage. Levels over 110 dB are comparable to a live rock concert or a power saw.

The analysis also revealed that climate plays a role. The researchers found a negative correlation between temperature and noise level, and a positive correlation with humidity. This suggests that on cooler, more humid days, sound may travel farther and more effectively, potentially increasing the radius of noise pollution impact.

## High Public Awareness Meets Cultural and Enforcement Barriers

Perhaps the most compelling part of the study is the disconnect it highlights between knowledge and action. The survey data showed that public awareness is exceptionally high: 90.5% of respondents were aware of noise pollution and its associated health risks. An overwhelming 94.3% expressed support for stricter regulations on noise from social events.

Despite this consensus, the researchers identified two significant obstacles. First, deep-seated cultural practices make reducing noise at events like funerals and weddings socially challenging. Second, there is limited enforcement of existing EPA standards. This creates a situation where people acknowledge the problem and want solutions but feel powerless to change behavior due to social pressure and a lack of legal follow-through.

## Implications for Hearing Health and Urban Policy

This research has direct implications for public health, particularly hearing health. Chronic exposure to the noise levels documented is a known risk factor for noise-induced hearing loss, tinnitus, and hyperacusis. For individuals already living with conditions like misophonia, where specific sounds trigger intense emotional distress, such pervasive and unpredictable noise pollution can severely degrade quality of life and mental well-being.

The study’s authors recommend a multi-faceted approach to mitigation. Strengthening public education is a first step, but it must be paired with practical community-based regulation strategies and, critically, enhanced enforcement of noise standards. This could involve setting and monitoring permissible noise levels for event venues and providing communities with the tools to report violations effectively.

From a global perspective, the findings from Kumasi are not isolated. They reflect a common challenge in growing cities worldwide, where social vitality and auditory health can come into conflict. Addressing it requires balancing respect for cultural traditions with the right to a healthy sound environment. As research into treatments for hearing disorders advances, including work on targeted drug delivery systems, public health efforts must equally focus on preventing the damage in the first place through effective noise pollution control.