Dietary Fats Linked to Lower Odds of Hearing Loss

NHANES analysis shows inverse dose-response associations for omega-3 and omega-6 intake, with no link for fatty acid ratio

By
Kathryn Wighton
April 28, 2026
3 min

Conexiant

Overview

A cross-sectional analysis of NHANES data found that higher dietary intake of omega-3 and omega-6 polyunsaturated fatty acids is associated with significantly lower odds of high-frequency hearing loss in US adults aged 30 to 69 years. The study demonstrated a linear inverse dose-response relationship for both fatty acids with hearing loss risk.

Background

High-frequency hearing loss affects a substantial portion of adults and can impact communication and quality of life. Polyunsaturated fatty acids, including omega-3 and omega-6, have been studied for their potential neuroprotective and anti-inflammatory effects. Prior research has suggested dietary factors may influence auditory function, but evidence on specific fatty acids and hearing loss risk remains limited. This study analyzed nationally representative data to clarify associations between dietary fatty acid intake and hearing loss prevalence.

Data Highlights

Parameter	Finding
Sample size	6,454 US adults aged 30-69 years
Prevalence of high-frequency hearing loss	~45%
Definition of hearing loss	Average pure tone threshold >25 dB at 3000-8000 Hz both ears
Omega-3 intake effect	Each 1-unit increase associated with ~7% lower odds of hearing loss
Omega-6 intake effect	Each 10-unit increase associated with ~10% lower odds of hearing loss
Odds reduction in higher intake quintiles	20%-30% lower odds for omega-3; 20%-25% lower odds for omega-6
Ratio of omega-6 to omega-3	No significant association with hearing loss

Key Findings

Higher omega-3 intake starting from the third quintile is linked to 20%-30% lower odds of high-frequency hearing loss compared to lowest intake.
Higher omega-6 intake starting from the fourth quintile is associated with 20%-25% lower odds of hearing loss, though the highest quintile did not reach statistical significance.
There is a linear inverse dose-response relationship between both omega-3 and omega-6 intake and hearing loss risk, with no nonlinear pattern observed.
The omega-6 to omega-3 intake ratio showed no significant association with hearing loss in continuous or categorical analyses.
Subgroup analyses confirmed consistent omega-3 findings across patient groups; omega-6 findings varied by race and ethnicity.
Sensitivity analyses supported the robustness of these associations after adjusting for multiple confounders including noise exposure and comorbidities.

Clinical Implications

These findings suggest that increasing dietary intake of omega-3 and omega-6 polyunsaturated fatty acids may be a modifiable factor to reduce the risk of high-frequency hearing loss in adults. Clinicians should consider dietary counseling as part of hearing loss prevention strategies, especially for patients at risk. However, causality cannot be established due to the cross-sectional study design.

Conclusion

Higher dietary intake of omega-3 and omega-6 polyunsaturated fatty acids is associated with lower odds of high-frequency hearing loss in US adults, indicating a potential protective role of these nutrients in auditory health. Further longitudinal studies are needed to confirm causality.