I am seeing new brain-training products on the market attempting to keep our brains sharp. May I suggest “better hearing”. There is mounting evidence that links memory, dementia, and hearing loss—especially untreated hearing loss.
Research indicates that when people with untreated hearing loss strain to hear, they have more difficulty remembering what they heard. Researchers believe this has to do with what is called “cognitive load”. In order to compensate, people with untreated hearing loss draw on mental resources that they would have normally used to remember what was just said.
Hearing loss and dementia
A study from Johns Hopkins Hospital found that older adults with untreated hearing loss are significantly more likely to develop dementia than those with normal hearing. Hearing loss is associated with accelerated cognitive decline in older adults. Some experts believe that hearing aids use may potentially help.