What Is Presbycusis and What Causes It? Topic Guide

What Is Presbycusis and What Causes It? What Is Presbycusis and What Causes It?: Presbycusis is hearing loss that gradually occurs in most people as they age. Causes of presbycusis include changes in the inner ear as people age (most common cause), changes in the middle ear, and complex changes along the nerve pathways leading to the brain. About 30 to 35 percent of adults age 65 and older experience hearing loss and up to 50 percent of people 75 and older have hearing loss.

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