Association of alcohol use with olfactory function among older adults.

Am J Otolaryngol

Department of Otolaryngology-Head and Neck Surgery, University of Illinois at Chicago, 1855 West Taylor St, MC 648, Room 3.87, Chicago, IL 60611, USA. Electronic address:

Published: June 2024

Background/purpose: Olfactory dysfunction (OD) has been recognized as an early biomarker for neurodegenerative diseases. Identifying behaviors that increase the risk of OD is crucial for early recognition of neurogenerative diseases. Alcohol consumption can potentially impact olfaction through its neurotoxic effects. This study aims to examine the relationship between alcohol consumption and OD, using data from the National Social Life, Health, and Aging Project (NSHAP).

Methods: This cross-sectional study was conducted on data for 2757 adults from Round 1 of NSHAP. OD was defined as correctly identifying 0-3 odors in the 5-item Sniffin' Sticks test while normal olfactory function was defined as correctly identifying 4-5 odors. Multivariable logistic regression was utilized to examine the association between alcohol consumption and OD, controlling for age, race, and comorbidities. Analyses were weighted to account for the sampling design.

Results: OD was present in 23.1 % of adults. The average age among those with OD was 71.2 ± 7.8 years, compared to 66.9 ± 7.2 years in those with normal olfaction. In terms of alcohol consumption, 31.1 % of adults with OD were light-to-moderate drinkers and 7.7 % were heavy drinkers, compared to 35.6 % light-to-moderate and 7.7 % heavy drinkers in the normal olfaction group. After adjusting for age, gender, race, and education, neither light-to-moderate drinking (aOR: 0.99; 95 % CI: 0.76-1.29) nor heavy drinking (aOR: 1.24; 95 % CI: 0.83-1.85) were significantly associated with OD.

Conclusion: Alcohol consumption was not associated with OD after controlling for covariates. While this study provides insight into the relationship between alcohol consumption and OD, further research is needed due to conflicting results in previous studies.

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http://dx.doi.org/10.1016/j.amjoto.2024.104271DOI Listing

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