What effects does noise have on people? The harm of noise has been around for a long time. Noise can harm people invisibly, sometimes even more than weapons and guns. This shows how serious the impact of noise is.
1. The impact of noise on the nervous system
People who work and live in a noisy environment for a long time often suffer from symptoms such as headache, dizziness, brain swelling, tinnitus, insomnia, dreaminess, drowsiness, palpitations, general fatigue, memory loss, and other symptoms. These symptoms are commonly known as neurasthenia syndrome in medicine. Noise acts on the human central nervous system, causing an imbalance in the excitation and inhibition balance of the cerebral cortex, leading to abnormal conditioned reflexes, damage to cerebral blood vessels, changes in brain potential, dissolution of chromatin at the edges of nerve cells, and in severe cases, exudative bleeding. kitchen. If these physiological changes are caused by short-term exposure to noise, they can be restored within 24 hours. However, if the noise acts long, it will form a strong excitatory focus, affect the autonomic nervous system, produce pathological effects, and lead to neurasthenia.
2. Effect of noise on the cardiovascular system
Noise can cause sympathetic nervous tension, accelerated heart rate, arrhythmia, myocardial structural damage electrocardiogram abnormalities, etc., and can even cause arrhythmia, hypertension, coronary heart disease, vasospasm, and myocardial infarction. In recent years, it has also been found that significant DNA damage was found in atrial and ventricular cardiomyocytes in the noise exposure group. Cardiovascular disease is the number one killer of human death. 1 million people die from cardiovascular disease every year in the United States, while 3 million people die in China. Noise has been listed as one of the factors leading to cardiovascular disease. Therefore, noise is closely connected with human life, and sufficient attention must be paid to noise control.
3. The impact of noise on the digestive system, visual organs, endocrine system, etc.
In terms of effects on the digestive system, surveys and studies have found that workers exposed to noise are prone to gastric dysfunction, which manifests as loss of appetite, nausea, poor eating habits, weakness, weight loss, and weakened physical fitness.
Regarding visual organs, although noise directly affects the auditory organs, it may cause changes in the functional status of other sensory organs, such as vision, through the interaction of nerve afferent systems. The investigation found that workers who work in a noisy environment for a long time often suffer from eye pain, vertigo, vision loss, and other symptoms due to damage to their hearing organs. Some people have found that exposure to medium-to-high-intensity noise between 800 and 2000 Hz can cause changes in human visual function, manifested by reduced photoreceptivity of retinal axis cells. Some people also found that under the influence of 11SdB aircraft engine noise, the light sensitivity of workers' eyes was reduced by 20%. Experiments show that noise also affects the visual field, such as increasing the visual field of green and blue light and reducing the visual field of orange-red light. Vision clarity is also closely related to noise intensity. The greater the noise intensity, the worse the vision clarity. At the same time, the greater the noise intensity, the longer it takes for vision to recover after work.
Regarding the impact on the endocrine system, the medical community believes that the metabolism of substances in patients working in a noisy environment is destroyed, the fat and cholesterol in the blood increase, and thyroid activity increases and mild swelling occurs. Noise is also a risk factor for pregnancy obstruction, hypertension, edema, dystocia, and insufficient lactation. There is also a dose-response relationship between the risk of pregnancy, hypertension insufficient lactation, and noise intensity. In addition, investigation and research have found that long-term noise exposure can also cause changes in blood cell classification, manifested as a decrease in eosinophils and neutrophils, an increase in lymphocytes, and anemia.
The key to solving the noise problem is to prescribe the right medicine. Only by fully analyzing all aspects of the noise problem and adopting corresponding solutions according to its characteristics can noise be controlled economically and effectively. Chongqing Shengyingmei Building Materials Co., Ltd. provides professional noise control and sound insulation materials to help you better control noise and enjoy a quiet and poetic life.
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Post time: Dec-04-2023
