Prospective Study of Gastroesophageal Reflux, Use of Proton Pump Inhibitors and H2-Receptor Antagonists, and Risk of Hearing Loss.
Brian M Lin, Sharon G Curhan, Molin Wang and 4 others
PMID 27556519WHAT IT FOUND
Frequent and long-standing reflux symptoms were associated with higher self-reported hearing loss.
Reflux medicines were not associated after reflux symptoms were taken into account.
Key findings
01Compared with women reporting no reflux symptoms in the past year, daily reflux symptoms had an adjusted relative risk of hearing loss of 1.33 (95% confidence interval 1.19 to 1.49).
02Compared with women reporting no reflux symptoms in the past year, 15 or more years of reflux symptoms had an adjusted relative risk of hearing loss of 1.20 (95% confidence interval 1.10 to 1.32).
03After reflux symptoms were taken into account, proton pump inhibitor use and H2-receptor antagonist use were not significantly associated with hearing loss.
STILL TO COME
How it was doneWhat they foundWhat it means for SLPs
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What it does not show
The study population was predominantly non-Hispanic white women, so the results may not apply to other groups. Reflux symptoms, medication use, and hearing loss were all self-reported, not confirmed by audiometry. The high overlap between reflux symptom frequency and duration made it impossible to tell whether frequency, duration, or both were independently associated with hearing loss. The study observed reported reflux and medication use over time rather than assigning treatment, so it cannot separate the effect of reflux symptoms from the medicines used for them. Residual confounding may remain despite adjustment for many known risk factors.
Declared interests
The authors declared no competing interests.
The easy way to misread this
Do not conclude that reflux symptoms cause hearing loss or that reflux medicines prevent or cause hearing loss. The study observed self-reported reflux symptoms and medication use over time, and after reflux symptoms were taken into account neither proton pump inhibitors nor H2-receptor antagonists were significantly associated with hearing loss.