Is deafness hereditary?

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Deafness has brought inconvenience to many people's lives. Not only can they not hear wonderful sounds, but they have also suffered hardships and challenges in growing up and finding a job. There are many causes of deafness, including genetic factors, accidental injuries, pathological factors, etc. Some couples have deafness problems and are very worried that their children will also be deaf.


Is deafness hereditary?


It cannot be generalized. Some types of deafness are not hereditary.

There are many causes of deafness, which cannot be generalized. Some deafness is not hereditary, such as trauma, blast, and otitis media. More than 60% of congenital deafness is caused by hereditary factors. About 6 out of 100 people carry the gene for deafness, which can appear normal and carry the gene, but do not cause the disease. Such genes can be inherited or inherited from generation to generation.


The incidence of congenital deafness accounts for about 50% of deaf people in my country, while genetic deafness accounts for about 85% of congenital deafness, most of which are autosomal recessive inheritance. . Consanguineous marriage is the main factor that causes genetic deafness. If both men and women are genetically deaf, most of their offspring will become genetic deafness or deafness gene carriers. Therefore, the issue of marriage and childbearing for people who are congenitally deaf should attract social attention. Congenital hereditary deafness should focus on prevention. First of all, the marriage law must be strictly enforced and consanguineous marriages are absolutely prohibited. Two people who are congenitally deaf should not get married. If they cannot get married for various reasons, they must be sterilized. Congenital hereditary deafness must be sterilized. People can marry a person who is not genetically deaf or a normal person, but they must undergo strict premarital examinations and regular physical examinations during pregnancy; if a person who is genetically deaf marries a person who is not genetically deaf or a normal person, the first child will be a congenitally deaf child and will never be born. A second pregnancy is not possible.



People who need to be tested for congenital deafness

According to large-scale epidemiological survey data, my country’s normal hearing population The carrier rate of middle-hearing deafness gene mutations is about 6%, which is a very high carrier rate. Therefore, we recommend promoting genetic screening for hereditary deafness in the general population. In fact, Beijing, Chengdu, Wuhan, Foshan and other places have incorporated deafness genetic screening into government livelihood projects. With the increase in people's health needs and the government's investment in medical and health care, deafness genetic screening will become an important part of general population screening. The project will be of great significance to the prevention and control of deafness in my country.


Of course, the key groups for prevention and control mainly include deaf patients, those who have given birth to deaf children or those with a family history of deafness. For this group of people, measures should be taken based on the specific situation and the patient’s Based on clinical phenotypes and genetic testing results, the subjects and their families will be provided with corresponding genetic counseling in terms of inheritance mode, recurrence risk, life guidance, medication guidance, etc..