How Alcohol Affects Hearing

We all know that excessive alcohol consumption can have some unpleasant side effects. However, one of these side effects remained relatively unknown until recently.

For a long time now, we have known that excessive alcohol can damage the brain and nervous system. This includes the auditory system—prolonged high blood alcohol can affect hearing cells in the inner ear (cochlea).

A recent research study has shown that there is a link between alcohol abuse and hearing loss. It appears as though the brain damage caused by alcohol extends to the part of the brain used to analyze the sounds heard by the ear. This affects hearing capacity, as the brain is no longer able to analyze the sounds heard by the ears. That said, the thresholds for blood alcohol level and duration have not yet been defined. Note that the study covered people who consumed alcohol occasionally, and even they showed signs of reduced hearing.

This data is important because we know that hearing loss can contribute to depression, a lack of self-confidence and irritability or social isolation. Additionally, the cells used to hear high frequencies appear to be affected the most. Because these cells are responsible for helping us understand words, this type of damage can cause problems with distinguishing words (e.g. hearing the difference between “hit” and “sit”).

Excessive alcohol consumption and noise exposure can both affect our ability to understand speech. The hearing loss caused by short-term exposure to very loud noises is often short-lived itself. For that reason, studies performed with nightclub visitors showed temporary hearing loss. However, frequent, prolonged exposure to noise, when combined with alcohol consumption, can lead to permanent damage. In any case, earplugs are recommended for people who frequently spend time at bars and clubs.

Finally, moderation is always key to protecting your hearing and your health! Talk to your pharmacist for more information.