In biology, it affects people's lives and makes people sick.
Harm of noise pollution
Long-term exposure of pregnant women to noise exceeding 50 decibels will lead to endocrine gland dysfunction, mental stress and endocrine system disorder. Serious will raise blood pressure, fetal hypoxia and ischemia, leading to fetal malformation, and even abortion. Moreover, high decibel noise will damage the fetal hearing organs, causing some areas to be affected. It affects the development of the brain and leads to mental retardation in children.
The malignant stimulation of noise seriously affects our sleep quality, which will lead to neurasthenia symptoms such as dizziness, headache, insomnia, dreaminess, memory loss, inattention, and digestive tract symptoms such as nausea, vomiting, stomachache, bloating and loss of appetite. Nutritionists have found that noise can also increase the consumption of vitamins, amino acids, glutamic acid, lysine and other trace elements in the human body, affecting health; Noise increases adrenal gland secretion, heart rate and blood pressure, which easily leads to heart attack; At the same time, noise can reduce the secretion of saliva, gastric juice and gastric acid, thus suffering from gastric ulcer and duodenal ulcer. It is harmful to people's cardiovascular system. According to the survey of urban noise and residents' health in China, the incidence of hypertension increases by 3% for every increase of 1 decibel in regional noise.
It affects people's nervous system and makes people irritable.
Affect sleep and cause fatigue.
way
1 build a soundproof forest
2. Move enterprises with serious noise pollution out of urban areas.
3 source prevention, reduce the transmission process
The physical and psychological damage caused by noise mainly includes the following aspects:
1, hearing loss. Relevant data show that people's hearing will be impaired after 8 hours of continuous listening to the sound of motorcycles; If you are in a rock concert hall, your hearing will be impaired after half an hour; If you live in a noise environment above 80 decibels, the possibility of deafness can reach 50%.
2. Noise impairs vision
As we all know, noise will seriously affect the hearing organs and even make people lose their hearing. However, there is a subtle internal "connection" between ears and eyes. When noise acts on the auditory organs, it will also "diffuse" the visual organs through the action of the nervous system, which will weaken people's vision.
It is pointed out that noise can make color vision and color gamut abnormal. The survey found that among 80 workers exposed to steady noise, the visual field of red, green and white was as high as 80%, which was 85% higher than that of the control group.
The influence of noise on eyesight can be seen everywhere in daily life. For example, when shopping in a quiet and bright store, it looks very pleasant and calm, so you can choose carefully and buy everything. However, when the tweeter plays fast-paced pop music loudly (some so-called pop music is just deafening noise), shopping tends to be restless, dazzling, and even mixed with random transactions. I didn't buy what I should have bought, but I was dissatisfied because I didn't identify it carefully. The main reason is that dry sound affects vision.
3. It is harmful to people's cardiovascular system. According to the Survey of Urban Noise and Residents' Health in China, the incidence of hypertension increases by 3% for every increase of 1 decibel in regional noise.
4, affecting people's nervous system, making people irritable.
Scientific research has found that noise can stimulate and inhibit the nervous system. People who work in noisy environment for a long time can also cause neurasthenia syndrome (such as headache, dizziness, tinnitus, memory loss, vision loss, etc.). ).
5, affecting sleep, causing fatigue.
Harm of noise to sleep: Sudden noise can wake up 10% of people at 40 decibels, and 70% of people at 60 decibels.
Psychologically speaking, noise will first cause psychological symptoms such as poor sleep, inattention, memory loss, etc., and then lead to irritability, emotional instability, and even decreased patience and bad temper, and finally produce a series of diseases such as hypertension, ulcer and diabetes. Psychologically, this disease is called psychosomatic disease, which refers to a physical disease caused by psychological factors. Dr. Li also introduced that the probability of psychosomatic diseases caused by noise is quite high, the treatment is difficult and it takes a long recovery period, which brings great troubles to people's daily life and work.
The direct harm of noise to human body includes: destroying human nerves, causing vasospasm, accelerating the metabolism of hair cells, thus accelerating the arrival of aging period. In clinical diagnosis, the external manifestations of patients are that the whole person is in a bad mood, emotional and speaks loudly; The most common symptoms are tinnitus, earache, hearing loss, dizziness, headache and noise deafness; For babies who are in the growth and development stage, the harm of noise is particularly obvious. Babies who are often in a noisy environment will not only suffer from hearing impairment, but also suffer from intellectual development. Because noise can cause sensory nerve damage and hair cell damage, it is difficult to repair.
Relevant experts believe that noise is very harmful to the human body, and the impact of noise (decibel) on the human body: for example, 0-50 decibels: comfortable, quiet; 50-90 decibels: it interferes with sleep, sadness and anxiety; 90- 130 dB: itchy ears and earache; /kloc-above 0/30 db: eardrum rupture, deafness.