The researchers suggest that hearing loss should not be ignored and should be treated in time. Generally speaking, brain atrophy is the inevitable result of aging.
Researchers from Johns Hopkins University and the National Institute on Aging said that the speed of brain atrophy in elderly patients with hearing loss should be related to the lack of treatment for hearing loss. Frank Lin, M.D., Johns Hopkins University, USA, and his colleagues compared brain changes in adults with normal hearing and hearing loss by referring to information from the Baltimore Longitudinal Study on Aging (BLSA). For the 10 years since 1994, 126 participants have received magnetic resonance imaging (MRI) every year to track brain changes.
The participants underwent a complete physical examination, including hearing tests, in 1994; at that time, 75 people were found to have normal hearing, and another 52 people suffered from hearing loss of at least 25 decibels. More brain tissue was lost. After several years of studying MRI results, Lin and his colleagues found that brain atrophy was accelerated in patients with hearing loss compared to those with normal hearing.
In conclusion, compared with people with normal hearing, patients with hearing loss have an extra cubic centimeter of brain atrophy each year. Hearing loss patients also have more severe atrophy in certain areas of the brain, including the processing of sound and speech.
It's not surprising that the brain's organization responsible for sound and speech is affected in people with hearing loss. The atrophy of these brain tissues may be caused by the lack of stimulation in the auditory cortex. However, there is a big gap