The Hearing Loss Association of America (HLAA) estimates that by age 65, one out of three people in the U.S. have some degree of hearing loss, according to a report by CNN.

Age-related hearing loss mostly comes from the inner ear, where vibratory energy is converted into nerve impulses.

Heredity, aging, and exposure to loud noises are the main factors experts say contribute to hearing loss over time.

Probably the most reliable sign that one’s hearing is deteriorating is the sensation of being able to hear things but not understand them, such as getting complaints from family, friends and coworkers that you’re not responding, particularly if they’re in a different room.

Some older adults live with hearing difficulties before seeking help, or never seek treatment at all, but experts say treatment can improve one’s quality of life.

Noise is the most important preventable cause of hearing loss, and it’s a cumulative effect, year after year, say experts. In particular, use of iPhone ear buds really contributes to preventable hearing loss according to experts.