Routine cognitive screening tools like the MoCA are verbal assessments, so hearing-impaired seniors get misdiagnosed with dementia when they actually just cannot hear the test questions

The Montreal Cognitive Assessment (MoCA) is the most widely used cognitive screening tool in primary care and neurology, administered to millions of older adults annually to detect mild cognitive impairment and early dementia. The test is primarily verbal: a clinician reads instructions aloud, asks the patient to repeat words, name animals from spoken descriptions, and recall word lists delivered orally. For a patient with untreated hearing loss — which affects two-thirds of adults over 70 — the MoCA does not measure cognition. It measures hearing. A patient who cannot hear 'face, velvet, church, daisy, red' cannot repeat them back, and their failure is scored as a memory deficit, not an auditory access problem. This matters because a false positive on the MoCA can trigger a cascade of life-altering consequences. The patient may be referred for expensive neuroimaging and specialist visits. Family members begin treating them as cognitively impaired — taking over finances, restricting driving, discussing nursing home placement. The patient internalizes the label and withdraws further, which accelerates actual cognitive decline in a devastating self-fulfilling prophecy. Meanwhile, the actual problem — treatable hearing loss — goes unaddressed. The 2024 Lancet Commission identified hearing loss as the largest modifiable risk factor for dementia, responsible for more attributable risk than smoking, depression, or physical inactivity. A 2024 meta-analysis of 50 studies encompassing 1.5 million participants found a 16% increase in dementia risk for every 10-decibel worsening of hearing. Treating the hearing loss with hearing aids demonstrably slows cognitive decline — but only if someone identifies it as hearing loss rather than dementia. The structural reason this persists is that primary care workflows are not designed to screen for hearing loss before screening for cognition. There is no standard protocol that says 'check hearing first, then administer the MoCA.' Audiometric testing requires equipment and training that most primary care offices lack. The U.S. Preventive Services Task Force has not issued a recommendation for universal hearing screening in older adults, so there is no billing code incentive for PCPs to add it. The result is that millions of seniors walk into a 15-minute annual wellness visit, fail a verbal cognitive screen because they could not hear it, and leave with a preliminary diagnosis of mild cognitive impairment — when a $50 hearing test would have revealed the real problem.