Hearing loss significantly raises the risk of cognitive decline, according to research by Dr. Frank Lin and colleagues of Johns Hopkins School of Medicine. Their study in JAMA Internal Medicine found a "30 to 40 percent faster rate of loss of thinking and memory abilities" associated with hearing loss over six years. Lin says reasons may include social isolation, cognitive load or some type of pathological process that may be behind both conditions, which may explain why the use of hearing aids does not reduce the risk.

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