Photo by Mark Paton on Unsplash We know that exercise is important for brain health has the potential to delay, or prevent, all cause-dementia in the general population. Hearing loss has recently also been identified as an important and potentially modifiable risk factor for dementia. Are hearing loss and physical activity related to each other? This study below shows in elderly people that hearing loss is associated with a worse physical activity profile. Is this association or causation? Is hearing loss part of the dementia prodrome and hence is associated with other prodromal features of dementia such as poor motivation, social isolation, lower mood, etc., which lead to less activity? Or is less activity in old age related to a lifetime of less activity and hence a higher risk of dementia and is simply associated with loss of hearing? Does hearing loss impact one's ability to exercise? Does less environmental auditory feedback make it less likely that you go out and exercise? I...