Why Hearing Loss May Be a Symptom of Physical Decline
Researchers say elderly adults with central hearing loss may also provide mild cognitive decline, an earlier indication of potential dementia.
Weight reduction is a common component of aging, but for some individuals, it can be an indication of serious trouble in the brain.
Researchers in Italy tested two kinds of age-related hearing loss, peripheral and fundamental.
Central hearing loss is caused by the brain diminished capacity to process noise. On average, people with such a hearing loss may hear noises, but can’t grasp their significance.
Study participants who had lower scores on a speech understanding evaluation also had lower scores on a test of thinking and memory abilities.
These preliminary results suggest that fundamental hearing loss may possibly share the same innovative loss of functioning in brain tissues that occurs in cognitive decline, instead of the sensory deprivation that happens with peripheral hearing loss,” said study lead author Rodolfo Sardone of the National Institute of Health and the University of Bari.
Driven by Rubicon Project
This study was the first to separately examine the prevalence of MCI in central and peripheral hearing loss.
Investigators found a correlation between hearing loss and MCI, however no effect and cause.
“An important challenge for future studies would be to research whether there’s a causal relationship between central hearing loss and cognitive functioning, or else they might be only complementary determined measures of neurological degeneration with age,” Pinky Agarwal, a neurologist at the Booth Gardner Parkinson’s Care Center at Washington state, told Healthline.
What is the relationship?
Sardone said one possibility is that both problems are linked to problems in the brain’s connective tissue, specifically the superior temporal gyrus,” that can be involved with cognitive function, working memory and language, and noise understanding.”
Both hearing loss and MCI are proven to have neurodegeneration — both the loss or departure of nerves from the brain.
“The primary auditory cortex may be that the gateway to cortical processing of sensory input signal, as it receives advice from the ascending auditory pathway,” explained Agarwal. “You can find cerebral modifications from the primary auditory cortex. The memory areas are on average in the temporal cortex. Aging can involve both areas simultaneously.”
Tests of hearing understanding ought to be given to people who are older than 65, as well as people with cognitive impairment, said Sardone.
“Hearing loss, both central and peripheral, is very associated with cognitive decline,” he told Healthline. “Preventing hearing handicap using hearing loss aids ancient may reduce or delay the onset of cognitive neurodegeneration.”
“If the hearing loss does subscribe to cognitive loss, address discrimination may be inserted like screening for MCI,” said Agarwal.
MCI an early type of dementia?
MCI is characterized by difficulty with language, memory, thinking, and ruling that exceed those normally associated with getting older.
Sardone described as a”preclinical stage of dementia.”
“Hearing loss may cause social isolation and depression that can impair cognitive decrease, and also the constant perceptual effort resulting from reduced hearing acuity may be a source of stress and mental fatigue,” said Agarwal.
The analysis discovered that, overall, 33 percent of the 1,604 participants in the Great Age Study have MCI.
About 60 percent of people with no hearing loss or peripheral age-related hearing loss had MCI, and 75 percent of people who have central hearing loss have the cognitive condition.
Among the study participants, who had a mean age of 75, about 26 percent had peripheral vascular hearing loss — brought on by issues in how the inner ear and hearing nerves function — and 12 percent had fundamental hearing loss.
Hearing loss affects approximately 30 percent of those U.S. population aged 60 to 69 years. It increases to 63 percent among people aged 70 years and over.
Multiple ago studies have also associated hearing loss with MCI and dementia.