Environmental noise, sleep and health.
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...Occupational noise-induced hearing loss Despite the introduction of standards for hearing protection, reduction in occupational noise exposure in developed countries, and extensive public health eff orts, hearing loss induced by exposure to occupational noise remains a dilemma and is the focus of extensive research. Noise-induced hearing is the most common occupational disease in the USA: about 22 million US workers are exposed to hazardous noise levels at work, and, annually, an estimated US$242 million is spent on compensation for hearing loss disability.(16) Many countries enforce general health and safety legislation that specifi es maximum exposure levels and requirements for action, including noise assessments, regular audiometric testing, protective equipment, and monitoring, which are intended to protect both workers and the public from excessive noise exposure. However, the available evidence for associations between occu pational noise exposure and hearing loss is complex and its quality varies. Many studies have a lack of appropriate non-exposed controls, and longitudinal studies are scarce. Contributors to a Cochrane collaboration review(17) con cluded that “higher quality prevention programs, better quality of studies especially in the fi eld of engin eering controls and better imple mentation of legislation are needed to better prevent noise-induced hearing loss”. This Review also indicated that current eff orts for hearing loss prevention focus on hearing protection rather than on noise control. The exact level of noise exposure in industrial settings that carries risk of hearing damage is debated internationally. For example, in the UK, the Control of Noise at Work Regulations (2005)(18) set levels for action at LAeq8h 80 dB (protection made available) and 85 dB (protection mandatory)....
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Cites background from "Environmental noise, sleep and heal..."
...considered the most severe non-auditory effect of environmental noise exposure.(24,25)...
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References
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