Question

how noise pollution is harmful to human beings

Answer 1

1.Loud noises can cause ear discomfort, such as ear ringing, ear pains and hearing loss, etc. Noises above 115db can even lead to deafness. According to statistics, about 50 percent of those who are exposed to the noise above 80db for a long time lose their hearing.

2.Noises can cause decrease work efficiency . Under the circumstance of noises above 85db,one may feel discomfort and distracted, thus he can not concentrate on his work or study.

3.Harm to blood vessels of human hearts. Noise is a dangerous factor for heart diseases, speeding up the aging process of hearts, causing high rate of miocardial infarction incidence. Long-term exposure to noises may lead to high blood pressure. Especially in night, noises cause much higher rate of incidence of a disease.

Answer 2

Noise pollution affects both health and behavior. Unwanted sound (noise) can damage psysiological and psysiological health. Noise pollution can cause hypertension, high stress levels, tinnitus, hearing loss, sleep disturbances, and other harmful effects.