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Zhou S, Hu S, Ding K, Wen X, Li X, Huang Y, Chen J, Chen D. Occupational noise and hypertension in Southern Chinese workers: a large occupational population-based study. BMC Public Health 2024; 24:541. [PMID: 38383328 PMCID: PMC10882732 DOI: 10.1186/s12889-024-18040-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2023] [Accepted: 02/07/2024] [Indexed: 02/23/2024] Open
Abstract
INTRODUCTION An increasing number of original studies suggested that occupational noise exposure might be associated with the risk of hypertension, but the results remain inconsistent and inconclusive. In addition, the attributable fraction (AF) of occupational noise exposure has not been well quantified. We aimed to conduct a large-scale occupational population-based study to comprehensively investigate the relationship between occupational noise exposure and blood pressure and different hypertension subtypes and to estimate the AF for hypertension burden attributable to occupational noise exposure. METHODS A total of 715,135 workers aged 18-60 years were included in this study based on the Key Occupational Diseases Surveillance Project of Guangdong in 2020. Multiple linear regression was performed to explore the relationships of occupational noise exposure status, the combination of occupational noise exposure and binaural high frequency threshold on average (BHFTA) with systolic and diastolic blood pressure (SBP, DBP). Multivariable logistic regression was used to examine the relationshipassociation between occupational noise exposure status, occupational noise exposure combined with BHFTA and hypertension. Furthermore, the attributable risk (AR) was calculated to estimate the hypertension burden attributed to occupational exposure to noise. RESULTS The prevalence of hypertension among occupational noise-exposed participants was 13·7%. SBP and DBP were both significantly associated with the occupational noise exposure status and classification of occupational noise exposure combined with BHFTA in the crude and adjusted models (all P < 0·0001). Compared with workers without occupational noise exposure, the risk of hypertension was 50% greater among those exposed to occupational noise in the adjusted model (95% CI 1·42-1·58). For participants of occupational noise exposed with BHFTA normal, and occupational noise exposed with BHFTA elevated, the corresponding risks of hypertension were 48% (1·41-1·56) and 56% (1·46-1·63) greater than those of occupational noise non-exposed with BHFTA normal, respectively. A similar association was found in isolated systolic hypertension (ISH) and prehypertension. Subgroup analysis by sex and age showed that the positive associations between occupational noise exposure and hypertension remained statistically significant across all subgroups (all P < 0.001). Significant interactions between occupational noise status, classification of occupational noise exposure combined with BHFTA, and age in relation to hypertension risk were identified (all P for interaction < 0.001). The associations of occupational noise status, classification of occupational noise exposure combined with BHFTA and hypertension were most pronounced in the 18-29 age groups. The AR% of occupational noise exposure for hypertension was 28·05% in the final adjusted model. CONCLUSIONS Occupational noise exposure was positively associated with blood pressure levels and the prevalence of hypertension, ISH, and prehypertension in a large occupational population-based study. A significantly increased risk of hypertension was found even in individuals with normal BHFTA exposed to occupational noise, with a further elevated risk observed in those with elevated BHFTA. Our findings provide epidemiological evidence for key groups associated with occupational noise exposure and hypertension, and more than one-fourth of hypertension cases would have been prevented by avoiding occupational noise exposure.
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Affiliation(s)
- Shanyu Zhou
- Department of Epidemiology and Biostatistics, School of Public Health, Peking University, 100191, Beijing, China
- Guangdong Province Hospital for Occupational Disease Prevention and Treatment, 510300, Guangzhou, Guangdong, China
| | - Shijie Hu
- Guangdong Province Hospital for Occupational Disease Prevention and Treatment, 510300, Guangzhou, Guangdong, China
| | - Kexin Ding
- Department of Epidemiology and Biostatistics, School of Public Health, Peking University, 100191, Beijing, China
| | - Xianzhong Wen
- Guangdong Province Hospital for Occupational Disease Prevention and Treatment, 510300, Guangzhou, Guangdong, China
| | - Xudong Li
- Guangdong Province Hospital for Occupational Disease Prevention and Treatment, 510300, Guangzhou, Guangdong, China
| | - Yongshun Huang
- Guangdong Province Hospital for Occupational Disease Prevention and Treatment, 510300, Guangzhou, Guangdong, China
| | - Jiabin Chen
- Guangdong Province Hospital for Occupational Disease Prevention and Treatment, 510300, Guangzhou, Guangdong, China.
| | - Dafang Chen
- Department of Epidemiology and Biostatistics, School of Public Health, Peking University, 100191, Beijing, China.
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Cantuaria ML, Pedersen ER, Poulsen AH, Raaschou-Nielsen O, Hvidtfeldt UA, Levin G, Jensen SS, Schmidt JH, Sørensen M. Transportation Noise and Risk of Tinnitus: A Nationwide Cohort Study from Denmark. ENVIRONMENTAL HEALTH PERSPECTIVES 2023; 131:27001. [PMID: 36722980 PMCID: PMC9891135 DOI: 10.1289/ehp11248] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/14/2022] [Revised: 12/13/2022] [Accepted: 12/20/2022] [Indexed: 06/18/2023]
Abstract
BACKGROUND There is a growing body of evidence linking residential exposure to transportation noise with several nonauditory health outcomes. However, auditory outcomes, such as tinnitus, are virtually unexplored. OBJECTIVES We aimed to investigate the association between residential transportation noise and risk of incident tinnitus. METHODS We conducted a nationwide cohort study including all residents in Denmark age ≥30y, of whom 40,692 were diagnosed with tinnitus. We modeled road traffic and railway noise at the most (Ldenmax) and least (Ldenmin) exposed façades of all Danish addresses from 1990 until 2017. For all participants, we calculated 1-, 5-, and 10-y time-weighted mean noise exposure and retrieved detailed information on individual- and area-level socioeconomic covariates. We conducted analyses using Cox proportional hazards models. RESULTS We found positive associations between exposure to road traffic noise and risk of tinnitus, with hazard ratios of 1.06 [95% confidence interval (CI): 1.04, 1.08] and 1.02 (95% CI: 1.01, 1.03) per 10-dB increase in 10-y Ldenmin and Ldenmax, respectively. Highest risk estimates were found for women, people without a hearing loss, people with high education and income, and people who had never been in a blue-collar job. The association with road Ldenmin followed a positive, monotonic exposure-response relationship. We found no association between railway noise and tinnitus. DISCUSSION To our knowledge, this is the first study to show that residential exposure to road traffic noise may increase risk of tinnitus, suggesting noise may negatively affect the auditory system. If confirmed, this finding adds to the growing evidence of road traffic noise as a harmful pollutant with a substantial health burden. https://doi.org/10.1289/EHP11248.
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Affiliation(s)
- Manuella Lech Cantuaria
- The Mærsk McKinney Møller Institute, University of Southern Denmark, Odense, Denmark
- Work, Environment and Cancer, Danish Cancer Society Research Center, Copenhagen, Denmark
- Department of Clinical Research, University of Southern Denmark, Odense, Denmark
| | - Ellen Raben Pedersen
- The Mærsk McKinney Møller Institute, University of Southern Denmark, Odense, Denmark
| | - Aslak Harbo Poulsen
- Work, Environment and Cancer, Danish Cancer Society Research Center, Copenhagen, Denmark
| | - Ole Raaschou-Nielsen
- Work, Environment and Cancer, Danish Cancer Society Research Center, Copenhagen, Denmark
- Department of Environmental Science, Aarhus University, Roskilde, Denmark
| | - Ulla Arthur Hvidtfeldt
- Work, Environment and Cancer, Danish Cancer Society Research Center, Copenhagen, Denmark
| | - Gregor Levin
- Department of Environmental Science, Aarhus University, Roskilde, Denmark
| | | | - Jesper Hvass Schmidt
- Department of Clinical Research, University of Southern Denmark, Odense, Denmark
- Research Unit for ORL – Head and Neck Surgery and Audiology, Odense University Hospital, Odense, Denmark
- OPEN, Odense Patient Data Explorative Network, Odense University Hospital, Odense, Denmark
| | - Mette Sørensen
- Work, Environment and Cancer, Danish Cancer Society Research Center, Copenhagen, Denmark
- Department of Natural Science and Environment, Roskilde University, Roskilde, Denmark
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Michaud DS, Thomson EM, van Oosterhout P, McNamee JP. Hair cortisol as a viable tool for the assessment of an association between environmental noise exposure and chronic stress. THE JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA 2022; 152:866. [PMID: 36050175 DOI: 10.1121/10.0012887] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/14/2022] [Accepted: 07/07/2022] [Indexed: 06/15/2023]
Abstract
Entrenched in the well-established link between stress and health, noise exposure as a potential contributor to stress-related health effects receives tremendous attention. Indeed, exposure to noise can act as a stressor as evidenced through increased heart rate, blood pressure, adrenaline, epinephrine, and cortisol. Cortisol is secreted from the adrenal glands in response to stressor-induced activation of the hypothalamic-pituitary-adrenal axis. For assessment of environmental noise and stress, repeated sampling in blood, saliva, or urine is necessary to evaluate the association between environmental noise exposure and protracted changes in cortisol. Controlling for the many variables that influence the secretion of cortisol at discrete sampling intervals is challenging. Studies suggest that systemically produced cortisol integrates and remains in hair as it grows, providing a measure that integrates a cortisol response over a longer period, circumventing several limitations associated with multiple sampling. Robust evidence supports the integration of cortisol into hair, yet recent studies call into question the notion that cortisol is retained with growth. The current paper discusses the strengths and limitations of hair cortisol analysis with an emphasis on its utility as a measure of chronic stress in environmental noise studies.
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Affiliation(s)
- David S Michaud
- Health Canada, Environmental and Radiation Health Sciences Directorate, Consumer and Clinical Radiation Protection Bureau, 775 Brookfield Road, Ottawa, Ontario K1A 1C1, Canada
| | - Errol M Thomson
- Health Canada, Environmental and Radiation Health Sciences Directorate, Environmental Health Science and Research Bureau, 251 Sir Frederick Banting Driveway, Tunney's Pasture, Ottawa, Ontario K1A 0K9, Canada
| | - Priya van Oosterhout
- Department of Neuroscience, Carleton University, 1125 Colonel By Drive, Ottawa, Ontario K1S 5B6, Canada
| | - James P McNamee
- Health Canada, Environmental and Radiation Health Sciences Directorate, Consumer and Clinical Radiation Protection Bureau, 775 Brookfield Road, Ottawa, Ontario K1A 1C1, Canada
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Michaud D, Sivakumaran K, Ritonja J, Waseem H, AlShenaiber L, Morgan E, Ahmadi S, Denning A, Morgan R. Impact of Noise Exposure on Risk of Developing Stress-Related Metabolic Effects: A Systematic Review and Meta-Analysis. Noise Health 2022; 24:215-230. [PMID: 36537446 PMCID: PMC10088431 DOI: 10.4103/nah.nah_21_22] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
Background Exposure to noise can increase biological stress reactions, which may increase adverse health effects, including metabolic disorders; however, the certainty in the association between exposure to noise and metabolic outcomes has not been widely explored. The objective of this review is to evaluate the evidence between noise exposures and metabolic effects. Materials and Methods A systematic review of English and comparative studies available in PubMed, Cochrane Central, EMBASE, and CINAHL databases between January 1, 1980 and December 29, 2021 was performed. Risk of Bias of Nonrandomized Studies of Exposures was used to assess risk of bias of individual studies and certainty of the body of evidence for each outcome was assessed using the Grading of Recommendations Assessment, Development and Evaluation (GRADE) approach. Results Fifty-six primary studies reporting on cortisol, cholesterol levels, waist circumference, glucose levels, and adrenaline and/or noradrenaline were identified. Although meta-analyses suggested that there may be an increase in waist circumference and adrenaline with increased noise exposure, the certainty in the evidence is very low. Overall, the certainty in the evidence of an effect of increased noise on all the outcomes were low to very low due to concerns with risk of bias, inconsistency across exposure sources, populations, and studies, and imprecision in the estimates of effects. Conclusions The certainty of the evidence of increased noise on metabolic effects was low to very low, which likely reflects the inability to compare across the totality of the evidence for each outcome. The findings from this review may be used to inform policies involving noise reduction and mitigation strategies, and to direct further research in areas that currently have limited evidence available.
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Michaud DS, Marro L, McNamee JP. High frequency hearing impairment and cardiovascular disease in Canada: Results from the Canadian Health Measures Survey. THE JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA 2021; 150:1001. [PMID: 34470330 DOI: 10.1121/10.0005589] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/07/2021] [Accepted: 06/22/2021] [Indexed: 06/13/2023]
Abstract
Noise-induced stress may precipitate cardiovascular diseases. This research assessed the association between sensorineural bilateral high frequency hearing loss (HFHL), as an indication of excessive noise exposure, and cardiovascular outcomes. Participants (n = 6318, ∼50% male) 20-79 years were recruited through the cross-sectional Canadian Health Measures Survey. Questionnaires included several demographic and health-related variables. Audiometry and blood/urine collection took place in a mobile examination centre. Average thresholds ≥25 dB averaged across 3, 4, and 6 kHz defined HFHL. Logistic or linear regression models explored associations between HFHL and cardiovascular-related risk factors/outcomes. Adjusted models indicated elevated diastolic blood pressure in respondents with normal hearing, X¯ = 72.52 (95% confidence interval: 71.85-73.18) compared to the group with bilateral HFHL, X¯ = 70.28 (95%CI: 69.13-71.43), p < 0.05. Average total cholesterol, high-density lipoprotein, low-density lipoprotein and apolipoprotein A1 were elevated in the normal hearing group (p < 0.05). Insulin, high-sensitivity C-reactive protein, and average resting heart rate were elevated in the group with bilateral HFHL, p < 0.05. A stratified analysis by sex- and age, or history of loud occupational noise exposure, did not change the overall results. Although some findings warrant further exploration, the overall analysis did not provide compelling evidence for an association between HFHL and cardiovascular-related biomarkers, or cardiovascular diseases among Canadians aged 20-79 years.
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Affiliation(s)
- David S Michaud
- Health Canada, Environmental and Radiation Health Sciences Directorate, Consumer and Clinical Radiation Protection Bureau, Ottawa, Ontario, Canada
| | - Leonora Marro
- Health Canada, Population Studies Division, Biostatistics Section, Ottawa, Ontario, Canada
| | - James P McNamee
- Health Canada, Environmental and Radiation Health Sciences Directorate, Consumer and Clinical Radiation Protection Bureau, Ottawa, Ontario, Canada
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