Prevention Of Noise-induced Hearing Loss Research Articles

Prevalence of Noise-Induced Hearing Loss Among Construction Workers in Puducherry, India

Prevalence of Noise-Induced Hearing Loss Among Construction Workers in Puducherry, India

Survey on sound exposure for musician using a noise dosemeter

Recently, the Ministry of Health, Labour and Welfare (MHLW) in Japan has revised guidelines for the prevention of noise-induced hearing loss among workers in the workplace. The target group is workers who are engaged in noisy work in factories and construction sites. It is thought that it is not only those engaged in noisy work who are exposed to loud noises. We considered that musicians playing musical instruments are also exposed to loud noises on a daily basis. Therefore, we have considered protecting musicians from hearing loss by determining the extent to which they are exposed to loud sounds on a daily basis. As a basic study, we explored the daily sound exposure of professional musicians using a RION dosemeter, which was developed in accordance with the Guidelines for the Prevention of Noise Disturbance.

Quality and Readability of Noise-Induced Hearing Loss Prevention-Related Websites.

This cross-sectional website analysis aimed to determine the readability and quality of English and Spanish websites pertaining to the prevention of noise-induced hearing loss. Cross-sectional website analysis. Various online search engines. We queried four popular search engines using the term "noise-induced hearing loss prevention" to reveal the top 50 English and top 50 Spanish websites for data collection. Websites meeting inclusion criteria were stratified based on the presence of a Health on the Net Code certificate (independent assessment of honesty, reliability, and quality). Websites were then independently reviewed by experts using the DISCERN criteria in order to assess information quality. Readability was calculated using the Flesch reading ease score for English and the Fernandez-Huerta formula for Spanish websites. Thirty-six English websites and 32 Spanish websites met the inclusion criteria. English websites had significantly lower readability (average = 56.34, SD = 11.17) compared to Spanish websites (average = 61.88, SD = 5.33) (P < .05). Spanish websites (average = 37, SD = 8.47) were also of significantly higher quality than English websites (average = 25.13, SD = 10.11). This study emphasizes the importance of providing quality and readable materials to patients seeking information about noise-induced hearing loss prevention. All of the English and Spanish websites reviewed were written at a level higher than the American Medical Association-recommended sixth-grade reading level. The study also highlights the need for evidence-based information online provided by experts in our field.

Prevalence and Factors Associated With Occupational Noise-Induced Hearing Loss Among Palm Oil Mill Workers in Selangor, Malaysia.

Introduction Occupational noise-induced hearing loss (NIHL) continues to be a significant public health issue globally, with Malaysia being no exception. In Malaysia, the majority of NIHL cases are reported from the manufacturing sector, with Selangor among the states with the highest number of confirmed cases. This study aimed to assess the prevalence of and factors associated with occupational NIHL among palm oil mill workers in Selangor, Malaysia. Methods A cross-sectional study was conducted to analyze the data from the data collection form, noise risk assessment reports, and audiometric test results done between 2021 and 2022 with a comparable baseline audiometric test. Results A total of 143 participants from three palm oil mills joined this study. The prevalence of NIHL was 42.7% (n = 61). Following the logistic regression model, NIHL was significantly associated with a duration of employment of 10 years and above, a history of occupational noise exposure at the previous workplace, and the use of personal hearing protectors at the current workplace with an adjusted OR of 2.41 (95% CI (1.14, 5.07)), 5.89 (95% CI (2.38, 14.53)), and 0.36 (95% CI (0.16, 0.83)), respectively. Conclusion The prevalence of NIHL among the study participants was high, and the associated factors are modifiable factors that can be prevented with a comprehensive hearing conservation program in the palm oil mills.

Overview of the Prevalence and Contributing Factors for Occupational Noise-Induced Hearing Loss (NIHL) in Malaysia

INTRODUCTION: This manuscript aims to provide a synopsis of the current situation surrounding noise exposure at work and the risk of noise-induced hearing loss (NIHL) in Malaysia. NIHL is an occupational illness that affects most many people and can be prevented in many countries in the world. The production and agriculture businesses and the extraction of natural resources and urban traffic all contribute to ambient noise levels. Working in a noisy environment is the main occupational risk factor for adult-onset hearing loss. In this study, we investigate the prevalence of NIHL across different industries, as well as research publication trends on NIHL. MATERIAL AND METHODS: Conducted thorough several online databases, like Science Direct, Web of Science, and Google Scholar, for related research that had already been published. The review phases were carried out according to the recommendations laid out by the preferred reporting items for systematic reviews. A set of criteria was developed for selecting relevant studies. RESULTS: The prevalence of NIHL among workers in Malaysia, varies across different industries and has been reported to range from 5.0% to 82.6%. NIHL has multiple contributing factors, including noise intensity, long-term exposure to daily noise, hearing protection devices and age. A review of these studies found varying percentages of individuals affected by each contributing factor. CONCLUSION: Occupational NIHL is a preventable health risk for workers across industries. Employers must adopt engineering and administrative controls (education and training) and provide personal hearing protectors to protect workers from noise.

Knowledge, Attitude and Practices (KAP) regarding hearing health and noise-induced hearing loss among folk/light music professionals from Chennai

Introduction: Musicians are exposed to music at high intensities and are at risk for developing noise- induced hearing loss (NIHL). Since hearing is so important to their career, they deserve special consideration. To avoid the deleterious effects of loud music, the professionals should be sensitized to the noise exposure and the use of strategies to prevent NIHL. The aim of the study is to determine the knowledge and attitude towards noise induced hearing disorders, and hearing conservative practices among professional musicians. Method: A KAP questionnaire was administered online to 136 professional musicians belonging to folk/ light music genre in Chennai. The participants were 115 males and 21 females, ranging in age from 18 to 75 years with the mean age of 29 (SD= 11). Results: The findings revealed that musicians were aware of the nature and cause of NIHL, but knowledge of NIHL prevention and treatment was limited to few. They had common misconceptions about the sources of harmful loud sounds, the effects of hearing loss, and hearing conservation strategies. Only a few participants reported to have used Ear Protective Devices (EPDs). Conclusion: Although musicians are aware of the risks of exposure to loud noise, they seldom use hearing protection. It is therefore vital to provide crucial information regarding NIHL and its prevention and promote musicians for better hearing preservation practices.

Prevalence and associated factors of noise-induced hearing loss among workers in Bishoftu Central Air Base of Ethiopia

Excessive occupational exposure to noise results in a well-recognized occupational hearing loss which is prevalent in many workplaces and now it is taken as a global problem. Therefore, this study aims to assess the prevalence of noise-induced hearing loss and associated factors among workers in the Bishoftu Central Air Base in Ethiopia. An institutional-based cross-sectional study was conducted among 260 central air base workers through face-to-face interviews, an environment noise survey, and an audiometric test for data collection. Data were entered by Epi-data version 3.1 and SPSS was used to analyze the data. Finally, a statistical analysis such as descriptive and binary logistic regression analysis was applied. A P-value < 0.05 at 95% CI was considered statistically significant. The overall prevalence of noise-induced hearing loss and hearing impairments was 24.6 and 30.9%, respectively. The highest prevalence of noise-induced hearing loss was recorded for workers who were exposed to noise levels greater than 90 dBA. Out of 132 workers exposed to the average noise level of 75 dB A, only 5% of workers were affected with noise-induced hearing loss, while 128 workers exposed to an average noise level equal to or greater than 90 dB A, 19.6% of workers were identified with noise-induced hearing loss. Regarding sex, around 21.9% of male workers were identified with noise-induced hearing loss. Workers who were exposed to a high noise level workplace previously or before the Central Air Base workplace were five times (AOR = 5.0, 95% CI 1.74–14.36) more likely affected by noise-induced hearing loss than those workers not previously exposed. Those workers who were exposed to greater or equal to 90dBA noise level were 4.98 times (AOR = 4.98, 95% CI 2.59–9.58) more likely to be exposed to noise-induced levels than those who were exposed to less than 90dBA noise level. Moreover, male air base workers were 3.5 times more likely exposed to hearing impairment than female workers (AOR = 3.5, 95% CI 1.01–12.0). This study identified that the prevalence of noise-induced hearing loss and hearing impairments was significantly high. So implementation of a hearing conservation program, giving noise education, and supplying adequate hearing protective devices (HPDs) are essentials.

Variations in the Cadherin 23 Gene Associated With Noise-Induced Hearing Loss.

The relationship between CDH23 gene variants and NIHL is unclear. This study investigates the association between cadherin 23 (CDH23) gene variants and noise-induced hearing loss (NIHL). This is a case-control study. Workers who were exposed to noise from a steel factory in North China were recruited and divided into two groups: the case group (both ears' high-frequency threshold average [BHFTA] ≥40dB) and the control group (BHFTA ≤25 dB). This study used the generalised multifactor dimensionality reduction method to analyse the association among 18 single-nucleotide polymorphisms (SNPs) in CDH23 and NIHL. Logistic regression was performed to investigate the main effects of SNPs and the interactions between cumulative noise exposure (CNE) and SNPs. Furthermore, CNE was adjusted for age, gender, smoking, drinking, physical exercise and hypertension. This study recruited 1,117 participants. The results showed that for rs11592462, participants who carried the GG genotype showed an association with NIHL greater than that of those who carried the CC genotype. Accordingly, genetic variation in the CDH23 gene could play an essential role in determining individual susceptibility to NIHL. Genetic variations in the CDH23 gene may play an important role in determining individual susceptibility to NIHL. These results provide new insight into the pathogenesis and early prevention of NIHL.

Noise Induced Hearing Loss Among Sawmill Workers in a Sub-Saharan African Country

Introduction: Noise Induced Hearing Loss (NIHL) is a permanent sensorineural hearing loss (HL) which affects the quality of life of exposed individuals. Aim: To determine the prevalence of NIHL among sawmill workers at the Timber market and petty traders in Accra, Ghana, and to assess the difference in actual and self-reported HL among the sawmill workers. Methods: This was a comparative study of NIHL among sawmill workers at the Agbogbloshie Timber Market of Accra and petty traders whose work environment was situated remotely from the sawmill. Data was analysed using SPSS version 20.0. Demographic characteristics and pure tone audiometric testing of study participants were analysed and presented as mean±standard deviation, counts and percentages. Independent T-test was used in comparing pure tone hearing thresholds of sawmill workers and petty traders at various frequencies. Results: A total of 120 sawmill workers and 120 petty traders were studied. Sixty-four (53.3%) of the petty traders were females and all the sawmill workers were males. Mean age of the sawmill workers was 41.5±11.8 years. The prevalence of NIHL among the sawmill workers was 37.5% in the right ear and 43.3% in the left ear. Among the petty traders, the prevalence of NIHL was 12.5% in the right ear and 8.3% in the left ear. There was a statistically significant difference in NIHL between the sawmill workers and the petty traders (p-value = 0.0001). The prevalence of HL in the better ear for the sawmill workers and petty traders was 16.7% and 1.7% respectively. Sixty-nine (57.5%) sawmill workers self-reported HL compared to actual HL of 39 (32.5%) which showed a statistically significant difference (p-value = 0.011). Conclusions: The prevalence of NIHL among the sawmill workers was 37.5% and 43.3% in the right and left ears. There was a significant difference between actual and self-reported HL among the sawmill workers.

Norepinephrine protects against cochlear outer hair cell damage and noise-induced hearing loss via α2A-adrenergic receptor

BackgroundThe cochlear sympathetic system plays a key role in auditory function and susceptibility to noise-induced hearing loss (NIHL). The formation of reactive oxygen species (ROS) is a well-documented process in NIHL. In this study, we aimed at investigating the effects of a superior cervical ganglionectomy (SCGx) on NIHL in Sprague-Dawley rats.MethodsWe explored the effects of unilateral and bilateral Superior Cervical Ganglion (SCG) ablation in the eight-ten weeks old Sprague-Dawley rats of both sexes on NIHL. Auditory function was evaluated by auditory brainstem response (ABR) testing and Distortion product otoacoustic emissions (DPOAEs). Outer hair cells (OHCs) counts and the expression of α2A-adrenergic receptor (AR) in the rat cochlea using immunofluorescence analysis. Cells culture and treatment, CCK-8 assay, Flow cytometry staining and analysis, and western blotting were to explore the mechanisms of SCG fibers may have a protective role in NIHL.ResultsWe found that neither bilateral nor unilateral SCGx protected the cochlea against noise exposure. In HEI-OC1 cells, H2O2-induced oxidative damage and cell death were inhibited by the application of norepinephrine (NE). NE may prevent ROS-induced oxidative stress in OHCs and NIHL through the α2A-AR.ConclusionThese results demonstrated that sympathetic innervation mildly affected cochlear susceptibility to acoustic trauma by reducing oxidative damage in OHCs through the α2A-AR. NE may be a potential therapeutic strategy for NIHL prevention.

Prevalence of Noise-Induced Hearing Loss Related to the Mills in the Markets of the Municipality of Parakou in 2021

Prevalence of Noise-Induced Hearing Loss Related to the Mills in the Markets of the Municipality of Parakou in 2021

Necessity of Hearing Conservation Program in India: A Systematic Review

Abstract: Background: Noise-induced hearing loss (NIHL) is a significant public health concern in India. Occupational noise exposure is prevalent in various industries and poses a significant risk to workers' hearing health. Implementing effective hearing conservation programs (HCPs) is essential for preventing and managing NIHL. This systematic review aims to assess the necessity of hearing conservation programs in India and explore their potential impact on occupational noise-induced hearing loss. Methods: A comprehensive literature search was conducted across major electronic databases, including PubMed, Google Scholar, Science Direct, ProQuest and Psynet. Studies published between 2009 to 2023 were included if they focused on hearing conservation programs, NIHL prevalence, awareness, or interventions in the Indian context. Relevant articles were selected, and their quality was assessed using with Preferred reporting Items for systematic review and meta-analysis (PRISMA) Results: The initial search yielded 3102 articles, of which 12 met the inclusion criteria. The included studies highlighted the alarming prevalence of NIHL among Indian workers, particularly in industries such as manufacturing, construction, and textiles. Moreover, they emphasized the lack of awareness and inadequate implementation of hearing conservation programs across various sectors. However, a limited number of studies evaluated the effectiveness and outcomes of existing programs. Conclusion: The findings of this systematic review underscore the urgent need for comprehensive hearing conservation programs in India. The prevalence of noise-induced hearing loss among workers indicates a significant occupational health challenge. Strengthening awareness campaigns, implementing preventive measures, such as engineering controls and personal protective equipment, and regular audiometric monitoring are crucial for reducing the burden of NIHL

Prevalence of Hearing Loss among Noise Exposed Industrial Workers

Exposure to any type of noise has a potential risk. Higher the level of noise and longer duration of exposure, more the risk for hearing sensitivity and health as a whole. Occupational noise induced hearing loss (ONIHL) is a major cause of disability throughout the world. So this study was designed to know the prevalence of NIHL among the noise exposed industrial workers in Bangladesh. A prospective observational study of 377 People working at industrial environment in Jute mills at Faridpur region were studied between January 2021 to June 2021. Data collected from each respondent recorded on a predesigned data collection form. Pure tone audiometry was performed in both ears. Among 377 study population, 157(41.6%) subjects had hearing loss and 220 subjects (58.4%) had no loss. Among the workers with hearing loss, 98(62.4%) got hearing loss on both sides, 32(20.4%) on the right side and 27(17.2%) on the left side. Among them 83(52.9%) had mild hearing loss, 37(23.6%) had moderate hearing loss, 31(19.7%) had severe hearing loss and 6(3.8%) had profound hearing loss. The average duration of work in the industry was 6.94±5.64 years and majority (78.5%) had 8 hours working hour per day and 21.5% had more than 8 hours. The average sound intensity was 91.51±8.12 dB(A) with 10.9% exposed to &lt;_85 dB(A) and 89.1% to &gt;85 dB(A). This study shows Noise-induced hearing loss (NIHL)as highly prevalent among noise-exposed workers in Bangladesh. Age &gt;35 years, high noise level, exposure of more than 10 years, were significantly associated with increased risk of hearing loss. The local and national authority should focus on noise monitoring, engineering modifications of buildings and machinery, occupational safety policies, administrative controls, providing education on NIHL, periodic audiometric assessments and follow-up evaluation for hearing threshold shift. This study supported the elements for further research studies related to the employer compliance with occupational health and safety regulations to address awareness of their responsibility in minimizing hazards in workplaces.&#x0D; Bangabandhu Sheikh Mujib Med. Coll. J. 2022;1(1):90-95

A Comprehensive Analysis of Noise-Induced Hearing Loss and Its Ayurvedic Insight

Noise-induced hearing loss (NIHL) is a growing global health concern, primarily attributed to our increasingly noisy environments. This comprehensive analysis delves into the multifaceted aspects of NIHL while exploring potential insights from Ayurveda, an ancient Indian system of medicine. NIHL results from prolonged exposure to loud noise levels, causing damage to the delicate structures of the inner ear. It is a gradual and irreversible condition that affects millions of people worldwide, impacting their quality of life and overall health. Traditional approaches to NIHL management primarily focus on hearing aids and protective measures. However, this analysis seeks to integrate Ayurvedic principles and treatments to offer a holistic perspective on NIHL prevention and management. Ayurveda, with its holistic approach to health, considers the interplay of physical, mental, and environmental factors. In Ayurveda, hearing loss can be linked to imbalances in the doshas (Vata, Pitta, and Kapha) and the accumulation of toxins in the body. By addressing these imbalances through dietary modifications, lifestyle changes, and herbal remedies, Ayurveda may offer valuable insights into preventing and managing NIHL. The analysis highlights the importance of noise awareness, emphasizing the need for public health campaigns and workplace regulations to reduce noise exposure. Additionally, it explores Ayurvedic herbs and therapies known for their potential in mitigating the effects of NIHL, such as Ashwagandha (Withania somnifera) and Panchakarma detoxification procedures. Furthermore, the study discusses the role of yoga and meditation in stress management, as chronic stress can exacerbate NIHL. Ayurvedic practices like Pranayama (breathing exercises) and Shirodhara (oil therapy for the head) may promote relaxation and reduce stress, contributing to overall hearing health. In conclusion, this analysis offers a comprehensive overview of NIHL, including its causes, symptoms, and conventional management strategies. By incorporating Ayurvedic insights, we explore a holistic approach to NIHL prevention and management, acknowledging the potential benefits of Ayurveda in promoting hearing health. Further research and collaboration between traditional and modern healthcare systems are essential to harness the full potential of Ayurveda in addressing the global issue of NIHL.

Prevention of noise-induced hearing loss by calpain inhibitor MDL-28170 is associated with upregulation of PI3K/Akt survival signaling pathway.

Noise-induced calcium overload in sensory hair cells has been well documented as an early step in the pathogenesis of noise-induced hearing loss (NIHL). Alterations in cellular calcium homeostasis mediate a series of cellular events, including activation of calcium-dependent protein kinases and phosphatases. Using cell-membrane- and blood-brain-barrier-permeable calpain-1 (μ-calpain) and calpain-2 (m-calpain) inhibitor MDL-28170, we tested the involvement of calpains, a family of calcium-dependent cysteine proteases, and the potential of MDL-28170 in preventing NIHL. CBA/J mice at the age of 12 weeks were exposed to broadband noise with a frequency spectrum from 2-20 kHz for 2 h at 101 dB sound pressure level to induce permanent hearing loss as measured by auditory brainstem response and distortion product otoacoustic emissions. Morphological damage was assessed by quantification of remaining sensory hair cells and inner hair cell synapses 2 weeks after the exposure. MDL-28170 treatment by intraperitoneal injection significantly attenuated noise-induced functional deficits and cochlear pathologies. MDL-28170 treatment also prevented noise-induced cleavage of alpha-fodrin, a substrate for calpain-1. Furthermore, MDL-28170 treatment prevented reduction of PI3K/Akt signaling after exposure to noise and upregulated p85α and p-Akt (S473) in outer hair cells. These results indicate that noise-induced calpain activation negatively regulates PI3K/Akt downstream signaling, and that prevention of NIHL by treatment with MDL-28170 is associated with upregulation of PI3K/Akt survival signaling pathways.

EFFECTS OF A TRAINING AND EDUCATION PROGRAM ON KNOWLEDGE, ATTITUDE AND PRACTICE TOWARDS NOISE-INDUCED HEARING LOSS PREVENTION AMONG VECTOR CONTROL WORKERS

Background: Noise-induced hearing loss (NIHL) is one of the most prevalent occupational disease globally. The objective of this study was to determine the effectiveness of a training and education program in increasing knowledge, attitude and practice (KAP) towards NIHL prevention among vector control workers.

Noise-induced Hearing Loss among Patients Requiring Pure Tone Audiometry Evaluation in a Tertiary Care Centre: A Descriptive Cross-sectional Study

Noise-induced hearing loss is a type of sensorineural hearing loss caused by long-term exposure to loud noise. This study provides insight into hearing loss problems the general population faces. The study aimed to find out the prevalence of noise-induced hearing loss among patients needing pure tone audiometry evaluation in a tertiary care centre. A descriptive cross-sectional study was conducted from 1 January 2021 to 30 July 2021 among patients requiring pure tone audiometry evaluation in the outpatient Department of Otorhinolaryngology in a tertiary care centre. The study was conducted after ethical approval from Institutional Review Committee (Reference number: 2812202001). Pure tone audiometry was used to diagnose noise-induced hearing loss. Convenience sampling was done. Point estimate and 95% Confidence Interval were calculated. Out of 690 patients, 14 (2.02%) (0.97-3.06, 95% Confidence Interval) were diagnosed with noise-induced hearing loss. The prevalence of noise-induced hearing loss among patients requiring pure tone audiometry evaluation was similar to other studies conducted in similar settings. audiometry; noise-induced hearing loss; tinnitus.

Assessment of noise-induced hearing loss (NIHL) of weaving factory workers in West Bengal, India - a pilot study

Introduction: Excessive noise exposure is one of the majorly considered occupational stress for industrial workers. The operation of steel weaving machinery producing a high level of noise such as weaving machines, crimping machines, and hydraulic press machines for a prolonged period increases the risk of developing noise-induced hearing loss (NIHL). The main aim of the study was to assess the auditory health of the workers exposed to a high level of noise in a steel weaving factory and the prevalence of NIHL among workers. Methods: 26 subjects in the age group of 25-55 years from a steel weaving industry of Chinsurah town, Hooghly district of West Bengal were randomly selected with 5 years of exposure for the study. The control group was selected from the same age group, socioeconomic status and geographical location and having no history of such exposure. The physiological parameters of the workers, noise levels in the workplace and auditory functions and the risk of NIHL were assessed by standardized protocol and statistically analyzed. Results: The study indicated that steel weaving factory workers had significantly reduced hearing functionality at 4000Hz and 6000Hz in the left ear respectively. It also revealed that the workers were exposed to high noise exposure of 131dB near weaving machine, 113dB at crimping machine, and 84dB at hydraulic press machine respectively. Conclusion: A high level of noise exposure leads to deterioration in the hearing capabilities of the steel weaving industrial workers. Implementation of ergonomic interventions in the workplace and the use of personal protective equipment (PPE) may decrease the prevalence of NIHL and can help to prevent hearing loss in workers.

Prevention of Noise-Induced Hearing Loss In Vivo: Continuous Application of Insulin-like Growth Factor 1 and Its Effect on Inner Ear Synapses, Auditory Function and Perilymph Proteins.

As noise-induced hearing loss (NIHL) is a leading cause of occupational diseases, there is an urgent need for the development of preventive and therapeutic interventions. To avoid user-compliance-based problems occurring with conventional protection devices, the pharmacological prevention is currently in the focus of hearing research. Noise exposure leads to an increase in reactive oxygen species (ROS) in the cochlea. This way antioxidant agents are a promising option for pharmacological interventions. Previous animal studies reported preventive as well as therapeutic effects of Insulin-like growth factor 1 (IGF-1) in the context of NIHL. Unfortunately, in patients the time point of the noise trauma cannot always be predicted, and additive effects may occur. Therefore, continuous prevention seems to be beneficial. The present study aimed to investigate the preventive potential of continuous administration of low concentrations of IGF-1 to the inner ear in an animal model of NIHL. Guinea pigs were unilaterally implanted with an osmotic minipump. One week after surgery they received noise trauma, inducing a temporary threshold shift. Continuous IGF-1 delivery lasted for seven more days. It did not lead to significantly improved hearing thresholds compared to control animals. Quite the contrary, there is a hint for a higher noise susceptibility. Nevertheless, changes in the perilymph proteome indicate a reduced damage and better repair mechanisms through the IGF-1 treatment. Thus, future studies should investigate delivery methods enabling continuous prevention but reducing the risk of an overdosage.

Noise Exposure and Hearing Health in the Workplace

Noise exposure is a potential occupational hazard found in almost every industrial sector.In Indonesia from research conducted on workers in workshops, wood industries and ferries, it was found that the noise intensity was between 85 – 103 dB and the prevalence of noise-induced hearing loss was between 21.7% - 34.5%. Besides being able to cause hearing loss, high-intensity noise also causes physical and psychological stress, interferes with communication and concentration, reduces work productivity, and even triggers work accidents. However, noise is often accepted as an unavoidable part of industrial processes causing workers to seem accustomed to noise and do not realize that it will gradually interfere with hearing and if left unchecked it can cause permanent / irreversible sensorineural hearing loss, so preventive measures are the best option to avoid hearing damage.