Noise can cause deafness

Noise above 115 decibels can also cause deafness, it has been determined. According to clinical statistics, if living in a noise environment above 80 decibels, deafness can be up to 50%. Medical experts believe that family noise is one of the causes of deafness in children.

Noise reduces the efficiency of work

Research has found that noise above 85 decibels can cause people to feel upset. People feel loud and can't concentrate on their work, resulting in lower productivity.

Damage cardiovascular and cerebrovascular diseases

Noise is a risk factor of cardiovascular disease, which can accelerate the aging of the heart and increase the incidence of myocardial infarction. Medical expert classics human body and animal experiment prove, contact noise for a long time can make inside body adrenal secrete increase, make blood pressure rise thereby, the person that lives for a long time in average 70 decibels noise, can make its incidence of myocardial infarction increases 30% left and right side, especially nocturnal noise can make incidence of disease is higher. The study found an increase of about 30 percent in heart attacks among people living near highways. The incidence of hypertension among 1101 female textile workers was 7.2%, among which the incidence of hypertension was 15.2% in those exposed to 100 dB noise.

Cause nervous system dysfunction

High noise working environment can cause dizziness, headache, insomnia, excessive dreaming, fatigue, memory loss, fear, irritability, low self-esteem and even mental disorder. In Japan, there have been cases of people becoming unhinged by the noise of trains and committing suicide.

Interferes with rest and sleep

Rest and sleep are necessary for people to eliminate fatigue, restore their strength and maintain their health. But noise disturbs people and makes it difficult to rest and fall asleep. When a person tossing and turning can not sleep, will be tense state of mind, breathing fast, the pulse rate is intensified, the brain is more than excited, the next day will feel tired, or weak limbs. Thus affect the work and study, as time passes, will get neurasthenia disease, performance for insomnia, tinnitus, fatigue.