According to the results of the second national sampling survey of disabled people, there are 27.8 million hearing disabled people in China, over 20 million hearing disabled adults and the elderly. There are many cases of hearing loss, such as children’s congenital deafness, acquired infections, major diseases, functional degradation of the elderly and other common factors. Hearing loss will bring great trouble to life and work, and it is related to many factors, smoking is one of them.
Japan’s national international medical center and other institutions surveyed 50195 men and women aged 20 to 64 working in eight enterprises with headquarters in Kanto, Japan. The investigators asked them to provide physical examination data from 2008 to 2010, including smoking status, and followed up the investigation to see if their hearing declined after that. The investigation continued until spring 2016. During this period, it is difficult for about 3500 people to hear high-frequency sound and 1600 people to hear low-frequency sound.
Taking into account age, hypertension, diabetes and other factors, the analysis found that the more the number of smokers, the more obvious the trend of hearing loss. Compared with the non-smokers, people who smoke more than 21 cigarettes a day have a 70% higher risk of hearing loss at high frequency and 40% higher risk of hearing loss at low frequency. At the time of the survey, there was no difference between the risk of hearing loss and that of non-smokers. Therefore, it can be speculated that the toxicity of nicotine and poor blood flow lead to the decline of inner ear cell function. Because nicotine is also contained in popular e-cigarettes, it is also expected to have an impact on inner ear cells, increasing the risk of hearing loss.
In addition, passive smoking, commonly known as “second-hand smoke”, has attracted more and more attention. Although we usually know that secondhand smoke can cause damage to respiratory health, its effect on hearing is little known. US researchers have found that people who inhale secondhand smoke for a long time have an increased risk of hearing loss, the BBC reported.
In the study, researchers from the University of Miami and the Florida International University looked at the hearing test results of 3307 nonsmoking volunteers, some of whom had previously smoked, while others had never smoked in their lives. The results showed that the risk of hearing loss of people who inhaled second-hand smoke increased by about 1 / 3, and the people with the most serious hearing loss were even difficult to hear others’ words clearly when there was background noise.
With the increase of age, hearing will decrease with high frequency as the center. In addition, studies have shown that long-term hearing loss increases the risk of Alzheimer’s disease.
Warm reminder: smoking is harmful to health. Please try not to smoke. Pay attention to health care, avoid long-term exposure to noise, eat less saturated fat diet, and prevent cardiovascular diseases in the elderly. Once hearing loss is found, seek medical advice in time.
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Link：Smoking is harmful, and the hearing is afraid to drop
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