A hearing aid is a small electronic device that you wear in or behind your ear. It makes some sounds louder. A hearing aid can help people hear more in both quiet and noisy situations.
Hearing aids help people who have hearing loss from damage to the small sensory cells in the inner ear. The damage can occur as a result of disease, aging, or injury from noise or certain medicines. Only about one out of five people who would benefit from a hearing aid actually uses one. If you think a hearing aid could help you, visit your doctor.
There are different kinds of hearing aids. They differ by size, their placement on or inside the ear, and how much they amplify sound. The hearing aid that will work best for you depends on what kind of hearing loss you have, and how severe it is.
NIH: National Institute on Deafness and Other Communication Disorders
- Hearing Aids (Food and Drug Administration)
- Hearing Aids (National Institute on Deafness and Other Communication Disorders) Also in Spanish
- Hearing Aids and Personal Sound Amplification Products: What to Know (Food and Drug Administration) Also in Spanish
- Struggling to Hear? Tiny Devices Can Keep You Connected (National Institutes of Health) Also in Spanish
- Buying a Hearing Aid (American Academy of Otolaryngology--Head and Neck Surgery)
- Hearing Aid Buying Guide: Sound Advice (Consumer Reports)
- Hearing Aids: How to Choose the Right One (Mayo Foundation for Medical Education and Research) Also in Spanish
- How to Get Hearing Aids (Food and Drug Administration)
Statistics and Research
- Use of Hearing Aids by Adults with Hearing Loss (National Institute on Deafness and Other Communication Disorders)
- ClinicalTrials.gov: Hearing Aids (National Institutes of Health)
Journal Articles References and abstracts from MEDLINE/PubMed (National Library of Medicine)
- Article: Hearing-Aid Directionality Improves Neural Speech Tracking in Older Hearing-Impaired Listeners.
- Article: Prevalence of Hearing Loss and Hearing Aid Use Among Adults in...
- Article: Percutaneous Bone-Anchored Hearing Implant: Is It Clinically Useful in Korean?
- Hearing Aids -- see more articles
Find an Expert
- Directory of Organizations (Deafness and Communication Disorders) (National Institute on Deafness and Other Communication Disorders)
- Find an Audiologist (American Academy of Audiology)
- National Institute on Deafness and Other Communication Disorders
- Hearing Aids (For Teens) (Nemours Foundation)