For people facing a greater threat of cognitive decline, getting hearing aids could cut your risk in half, according to a new study
. Cognitive decline is a reduction in abilities that can range from mild impairment to dementia, according to the US Centers for Disease Control and Prevention, and dementia is a big problem across the globe. “As everyone lives longer, the number of people with dementia over time are going up,” said co-principal investigator of the study Dr. Frank Lin, professor at Johns Hopkins University School of Medicine and the Bloomberg School of Public Health.
But why might that increase dementia risk? There are three mechanisms researchers think may be at play, he said. One is that if the cochlea wears out over time, the inner ear may be sending garbled signals to the brain, which has to work harder and redistribute brain power to understand what it’s hearing, Lin said. “That’s why people always say it sounds like people are mumbling at me,” he added.
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