Gastroesophageal reflux disease (GERD), commonly associated with heartburn and regurgitation, has been linked to hearing issues.
A recent population-based study from South Korea suggests that GERD could significantly increase the risk of tinnitus – a condition where individuals experience ringing or buzzing sounds with no external source.
The study, published in Scientific Reports, analysed data from over 660,000 individuals and found that people diagnosed with GERD were more likely to develop tinnitus. GERD patients experienced an incidence of tinnitus of 14.91 cases per 1,000 person-years during the follow-up period, compared to 1.74 cases in non-GERD individuals.
After adjusting for factors like age, lifestyle, and other health conditions, GERD patients still had more than a sixfold higher risk of developing tinnitus.
Why could reflux lead to tinnitus?
Researchers believe that reflux could disrupt the Eustachian tube, which connects the throat to the middle ear and helps regulate pressure. Acid entering this tube may create an imbalance in the middle and inner ear, potentially contributing to hearing-related issues such as tinnitus.
The study builds on earlier research linking reflux to middle ear dysfunction and conditions like otitis media.
Researchers believe that acid and pepsin, a digestive enzyme, could damage the round window membrane, a key structure connecting the middle ear to the inner ear. Disruption of this membrane could affect the inner ear’s fluid balance, contributing to tinnitus.
In addition to pepsin’s role, GERD-related inflammation may play a part by triggering immune responses that further disrupt auditory pathways.
Does treatment for GERD reduce tinnitus risk?
The study also explored whether proton pump inhibitors (PPIs) – a common treatment for acid reflux – reduced the risk of tinnitus. The findings showed otherwise: PPI use slightly increased tinnitus cases instead of decreasing them.
While PPIs are effective at suppressing stomach acid, they may not address ‘alkaline’ reflux, which can also irritate the upper airway and middle ear.
The study noted that patients with GERD often experienced symptoms despite PPI use, highlighting the complex nature of reflux beyond simple acid suppression.
Additionally, long-term PPI use depletes magnesium, which may affect auditory health since magnesium is essential for protecting the inner ear from damage.
What do these findings mean?
Cochlear dysfunction commonly links to tinnitus, but various factors can cause it. Conditions such as infections, autoimmune disorders, and circulatory issues can contribute to the onset of tinnitus. The study’s findings reinforce that reflux could be an under-recognised contributor, especially when persistent symptoms are involved.
This research highlights the importance of recognising GERD not just as a digestive issue but as a condition that may have wider effects on the body. If you experience both GERD symptoms and persistent tinnitus, it could be worth discussing this with your healthcare
Monitoring GERD symptoms and their impact could help improve outcomes for people at risk of complications. A tool like Peptest, which detects pepsin in saliva, can offer a simple, non-invasive way to assess reflux severity and evaluate whether treatments are working.
Measuring salivary pepsin levels could help reduce the need for long-term PPI use by identifying when lifestyle adjustments or alternative therapies may be more appropriate. This approach not only supports symptom management but could also minimise the risks associated with prolonged medication use.
Peptest detects pepsin — the stomach enzyme that marks reflux — in a saliva sample. Collected at home, analysed in our UK laboratory, results back within 48 hours.
- Results in 48 hours
- No GP referral needed
- UK laboratory
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