Hearing loss and dementia linked

March, 2011

Another study builds on earlier indications that hearing loss is a risk factor for dementia, and emphasizes the need for early intervention.

Data from the Baltimore Longitudinal Study on Aging, begun in 1958, has revealed that seniors with hearing loss are significantly more likely to develop dementia than those who retain their hearing. The study involved 639 people whose hearing and cognitive abilities were tested between 1990 and 1994, then re-tested every one to two years. By 2008, 58 (9%) of them had developed dementia (37 of which were Alzheimer’s).

Those with hearing loss at the beginning of the study were significantly more likely to have developed dementia. The degree of hearing loss also correlated with greater risk: those with mild, moderate, and severe hearing loss had twofold, threefold, and fivefold, respectively, the risk of developing dementia over time. The association was maintained after other risk factors, (high blood pressure, smoking, education, age, sex, race) were taken into account.

The reason for the association is not yet known. It’s possible that a common pathology may underlie both, or that the strain of decoding sounds over the years may make the brain more vulnerable to dementia, or that hearing loss makes people more socially isolated (a known risk factor for dementia).

The findings do suggest that hearing loss should be regarded more seriously, and not simply accepted as a natural part of growing old.

Reference: 

Related News

A small study comparing 38 younger adults (average age 22) and 39 older adults (average age 68) found that the older adults were less able to recognize when they made errors.

Can computer use, crafts and games slow or prevent age-related memory loss?

Americans with a college education live longer without dementia and Alzheimer's

Socially active 60-year-olds face lower dementia risk

Stressors in middle age linked to cognitive decline in older women

Data from some 900 older adults has linked stressful life experiences among middle-aged women, but not men, to greater memory decline in later life.

A study involving more than 2,500 older adults (65+) found that the rate of worsening vision was associated with the rate of cognitive decline. More importantly, vision has a stronger influence on cognition than the reverse.

Hearing loss linked to increased dementia risk

Chronic insomnia linked to memory problems

Link found between chronic inflammation and Alzheimer's gene risk

Brain scans of 9,772 people aged 44 to 79, who were enrolled in the UK Biobank study, have revealed that smoking, high blood pressure, high pulse pressure, diabetes, and high BMI — but not high cholesterol — were all linked to greater brain shrinkage, less

Pages

Subscribe to Latest newsSubscribe to Latest newsSubscribe to Latest health newsSubscribe to Latest news