Context.— Clinical studies have suggested that cigarette smoking may be associated
with hearing loss, a common condition affecting older adults.
Objective.— To evaluate the association between smoking and hearing loss.
Design.— Population-based, cross-sectional study.
Setting.— Community of Beaver Dam, Wis.
Participants.— Adults aged 48 to 92 years. Of 4541 eligible subjects, 3753 (83%) participated
in the hearing study.
Main Outcome Measures.— The examination included otoscopy, screening tympanometry, and pure-tone
air-conduction and bone-conduction audiometry. Smoking history was ascertained
by self-report. Hearing loss was defined as a pure-tone average (0.5, 1, 2,
and 4 kHz) greater than 25-dB hearing level in the worse ear.
Results.— After adjusting for other factors, current smokers were 1.69 times as
likely to have a hearing loss as nonsmokers (95% confidence interval, 1.31-2.17).
This relationship remained for those without a history of occupational noise
exposure and in analyses excluding those with non–age-related hearing
loss. There was weak evidence of a dose-response effect. Nonsmoking participants
who lived with a smoker were more likely to have a hearing loss than those
who were not exposed to a household member who smoked (odds ratio, 1.94; 95%
confidence interval, 1.01-3.74).
Conclusions.— These data suggest that environmental exposures may play a role in age-related
hearing loss. If longitudinal studies confirm these findings, modification
of smoking habits may prevent or delay age-related declines in hearing sensitivity.