Hearing and Vision as Overlooked Aging Biomarkers

Age-related hearing loss and vision decline are often treated as isolated, unavoidable inconveniences of getting older, addressed separately from broader health tracking. Research has increasingly found that hearing loss specifically is associated with an elevated risk of cognitive decline and dementia, with some researchers proposing that the increased cognitive load of straining to hear, along with reduced auditory stimulation to the brain, may partly explain the connection.

Vision decline carries its own set of downstream risks, including increased fall risk in older adults, which itself is a major driver of disability and mortality risk. Because both hearing and vision loss tend to develop gradually, people frequently adapt without fully registering the decline, which is part of why researchers have pushed for these senses to be tracked with the same regularity as other health metrics rather than addressed only once decline becomes severe.

Why this matters for tracking: treating hearing and vision as routine biomarkers to track, rather than inevitable background noise of aging, connects to broader research on cognitive health and fall risk that most people don't associate with sensory decline.