Hearing..

 

A major study found that changing behaviors in areas like exercise, socialization and blood pressure control could reduce dementia cases by as much as 40%. 

Earlier research findings that those with hearing loss are up to five times more likely to develop dementia and that the use of hearing aids may cut that risk in half.

Hearing was among the several modifiable risk factors for dementia identified in 2020 by a leading medical journal, The Lancet. 

Others included: low education levels, high blood pressure, smoking, obesity, physical inactivity, diabetes, excessive alcohol consumption, brain injury and air pollution.  Just a thought.