First, it seriously affects the function of the central nervous system, leading to nervous system weakness and dysfunction. For example, long-term noise can lead to insomnia, dreaminess, poor rest and sleep conditions, or poor rest and sleep quality, leading to shortened deep sleep period, prolonged shallow sleep period or neurological headache, migraine, insomnia, dreaminess and other clinical symptoms and manifestations.
Second, it will produce symptoms of cardiac insufficiency, which will lead to coronary artery ischemia and short-term vasospasm under the long-term noise hazard, thus leading to chest tightness, shortness of breath, palpitation, precordial discomfort and so on.
Thirdly, noise can also cause irreversible damage to the ear canal and auditory system, such as nervous tinnitus and even nervous deafness.