Noise And Hearing

Noise is a major problem, particularly for people living in large cities, because it affects not only the ears but also the whole body. Moderately loud noise causes the blood vessels of the skin to contract, and can temporarily impair the ability of the eyes to focus and see in depth. Sudden, unexpected noise can momentarily upset the body - the head jerks forward, the muscles tense and the heartbeat quickens.

If such physical reactions happen only rarely, they are harmless. But unpleasant psychological effects, such as irritability and tension, can build up after repeated or continuous exposure to noise. Prolonged exposure to high-volume music in discotheques may impair the hearing. One way to overcome discomfort or possible hearing damage from noise is to wear ear-plugs or ear-muffs.

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