Hearing loss can run in families, though you won’t necessarily be as susceptible as your relatives. Across 19 clinics, from Belleville and Napanee to Guelph, Oakville, and Windsor, HEAR Ontario’s audiologists and hearing instrument specialists can evaluate your hearing within the context of your family history and help you understand how genetics may affect your hearing health. If hearing loss is a known condition in your family, early testing and protective habits should come first, because they help preserve your hearing and address changes sooner.
How Can Changes in Your Genes Affect Your Hearing?
Changes in your genes can affect your hearing by altering how the ear develops or functions, which is what causes genetic hearing loss. Most genetic hearing loss is sensorineural, meaning it involves the hair cells of the inner ear or the auditory nerve. It may be present at birth or develop later in life.
Genetic hearing loss is generally divided into two categories. Nonsyndromic hearing loss accounts for about 70% of genetic cases and occurs without other medical symptoms. Syndromic hearing loss makes up the remaining 30% and occurs alongside other health conditions, such as Usher, Pendred, and Waardenburg syndromes.
Who Is Most Likely to Inherit Hearing Loss?
Your likelihood of inheriting hearing loss depends on the inheritance pattern of the specific gene involved. Depending on the pattern, a child’s chance may range from no risk to 50% or higher, and in many cases, parents with normal hearing can still have a child with genetic hearing loss.
The main inheritance patterns include:
- Autosomal dominant: Only one changed gene from one parent is needed, giving each child a 50% chance of inheriting the condition.
- Autosomal recessive: Both parents carry one changed gene without having hearing loss themselves, giving each child a 25% chance of inheriting the condition.
- X-linked: The changed gene is on the X chromosome, so males are more likely to be affected, while females are often carriers.
- Mitochondrial: The condition is passed only by the mother and can affect all of her children.
Autosomal recessive inheritance accounts for about 80% of nonsyndromic genetic hearing loss, which explains why most infants with hearing loss are born to parents with normal hearing. Even within the same family, severity and age of onset can vary from one person to another.
Do Hereditary Hearing Loss Symptoms Start in Childhood or Adulthood?
Hereditary hearing loss symptoms can start in either childhood or adulthood, and in certain cases they’re present at birth. Some forms are congenital and identified through newborn hearing screening, while others are progressive and develop gradually over years or decades.
Congenital hearing loss affects up to three in every 1,000 babies, and inherited genetic factors contribute to about 60% of hearing loss in infants. In young children, signs may include not reacting to loud sounds, not turning toward voices, or delays in speech and language development.
Later-onset genetic hearing loss often develops slowly, which can make it easy to overlook. Adults may notice:
- Difficulty following conversations in noisy places
- Asking others to repeat themselves
- Turning up the television or phone volume
- Ringing or buzzing in the ears
Because gradual changes can go unnoticed, family members are often the first to recognize them.
When Is the Best Time for a First Hearing Check?
The best time for a first hearing check is as soon as you notice changes in your hearing, and if you have a family history of hearing loss, a baseline test and regular evaluations can be worthwhile even before symptoms appear.
Almost all hospitals screen newborns for hearing loss within the first few days of life. Children who pass newborn screening but have a family history of hearing loss may still benefit from monitoring, since some genetic forms develop later.
For adults, a baseline hearing evaluation provides a reference point for tracking changes over time. Our hearing care team can perform a comprehensive hearing test, discuss your family history, and recommend how often you should return for follow-up testing. When a genetic cause is suspected, your hearing care provider may recommend a referral for genetic counselling or testing. Currently, no genetic test can predict whether a person will develop age-related hearing loss, which makes regular hearing evaluations especially important.
What Helps Keep Your Hearing Healthy When Genetics Are a Factor?
When genetics are a factor, limiting noise exposure, using hearing protection, reviewing medications with your healthcare providers, managing your overall health, and scheduling regular hearing evaluations all help keep your hearing healthy.
Because some genes can make the inner ear more vulnerable to damage, avoiding additional strain is especially important. Wearing earplugs or earmuffs around loud equipment, concerts, or firearms and keeping headphone volume at moderate levels can reduce noise exposure. Some medications can affect hearing, so let your healthcare providers know about a family history of hearing loss before starting new prescriptions.
Overall health also plays a role. Conditions such as high blood pressure, heart disease, and diabetes may increase the risk of hearing loss, so managing these conditions supports long-term hearing health.
When hearing loss does develop, our hearing care team can recommend options such as hearing aids and track changes over time to adjust your care as needed.
Visit a HEAR Ontario Clinic, From Belleville to Windsor
If hearing loss runs in your family, a hearing evaluation at HEAR Ontario is a smart first step. Your first visit includes a hearing test that establishes a baseline and helps determine whether you need treatment now or continued monitoring. Services can vary by location, so mention your family history when you reach out.
Call the clinic nearest you or contact HEAR Ontario to find its number and schedule an appointment close to home.