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October 28, 2014
Parkinson’s disease may also result in hearing loss

Hearing loss has been found to be almost twice as likely to affect elderly people with Parkinson’s disease

It is well known that aging is related to hearing loss. However Parkinson’s disease also affects the cochlea, which is the sensory organ of hearing.

The important neurotransmitter dopamine, the absence of which causes Parkinson’s disease, helps to protect the cochlea from noise exposure. Inadequate dopamine can thus lead to damage to the cochlea and result in hearing loss.

A study, conducted by a Taiwanese research team, shows that incidences of Parkinson’s disease were 1.77 times more likely in a group of patients with hearing loss compared to a non-hearing loss group: 3.11 vs. 1.76 per 1,000 people respectively.

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