- Hearing loss affects all age groups
- Half of all hearing loss cases can be avoided through primary preventive methods
- Ten million Americans suffer irreversible hearing damage from loud noise
- Listening to sound music through headsets is the main reason behind hearing loss in adolescents
Hearing loss or hearing impairment is the partial or total inability to hear in one or both the ears. Hearing loss is one of the most widespread sensory deficit globally today, according to the World Health Organization (WHO). An individual who is not able to hear a hearing threshold of 25dB (decibel) in both ears is said to have hearing loss.
‘Hearing loss or hearing impairment is the result of sound waves not reaching the brain. Brett Lee is in India to promote the use of cochlear implant to overcome hearing disability.’
|Degree of Hearing Loss||Hearing Loss Range (dB)|
- Sensorineural hearing loss caused by the damage to the hair cells present inside the inner ear
- Conductive hearing loss when sounds are unable to pass from the outer ear to the inner ear due to ear wax or glue ear.
Hearing Loss Facts and Statistics
- Around 360 million people worldwide (328 million adults and 32 million children) suffer disabling hearing loss. Disabling hearing loss refers to hearing loss >40 dB in the better hearing ear in adults and >30dB in the better hearing ear in children
- Up to 5 in every 1000 infants are born with or develop hearing loss in early childhood
- One out of every three people over the age of 65 years are affected by hearing loss
- Causes of hearing loss can be classified into congenital and acquired
- People with hearing loss can benefit from hearing aids, cochlear implants (a medical device that replaces the function of the damaged inner ear) and other assistive devices.