Hearing loss has been linked to a number of physical, social and psychological conditions including dementia, diabetes, anxiety, depression and social withdrawal. One of its lesser known side effects is fatigue.
If you have been feeling more tired than usual lately and experience hearing loss, there may be a correlation between the two. The reason boils down to a condition known as listening fatigue, a consequence of expending extra effort in order to hear better.
Believe it or not, hearing involves the brain just as much as the ears. Your brain receives sensory input from the inner ear and is responsible for processing sounds and translating them into recognizable speech. Damage to the hair cells of your inner ear—a common cause of hearing loss—limits your ability to hear properly; when this occurs, your brain is forced to “pick up the slack” and works extra hard to understand what you are hearing. Doing so is taxing and often leads to feelings of exhaustion and decreased energy levels, even if you have refrained from any sort of physical activity.
Wearing hearing devices should significantly reduce these feelings of exhaustion. Because they amplify speech, your brain does not have to work as hard to convert this sensory input into sound, greatly reducing listening fatigue; this should translate to less physical tiredness and a boost in energy.
Source: Alhanbali, S., et al. (2017) Self-reported listening-related effort and fatigue in hearing-impaired adults. Ear and Hearing: The Official Journal of the American Auditory Society (38)1: 39-48.