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- Rosenhall, Ulf, et al.
(author)
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Dietary habits and hearing
- 2015
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In: International Journal of Audiology. - 1499-2027 .- 1708-8186. ; 54:Suppl. 1, s. S53-S56
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Journal article (peer-reviewed)abstract
- Objective: Study groups from three age cohorts of 70-75 year-olds were investigated to search for possible correlations between dietary habits and auditory function.Design: A cross-sectional, epidemiological study.Study sample: A total number of 524 people (275 women, 249 men) were recruited from three age cohorts. The study sample was representative of the general population. All participants answered a diet history and were tested with pure-tone audiometry. Eleven categories of food consumption were related to pure-tone averages of low-mid frequency hearing, and high frequency hearing.Results: Two consistent correlations between diet and hearing were observed. One was a correlation between good hearing and a high consumption of fish in the male group. The other was a correlation between poor high frequency hearing and a high consumption of food rich in low molecular carbohydrates in both genders; a larger effect size was seen in females.Conclusions: The study indicates that diet is important for aural health in aging. According to this study fish is beneficial to hearing, whereas consumption of "junk food", rich in low molecular carbohydrates, is detrimental. Other correlations, e.g. between high consumption of antioxidants, were not demonstrated here, but cannot be excluded.
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- Haggstrom, J, et al.
(author)
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Prognostic Value of a Test of Central Auditory Function in Conversion from Mild Cognitive Impairment to Dementia
- 2020
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In: Audiology & neuro-otology. - : S. Karger AG. - 1421-9700. ; 25:5, s. 276-282
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Journal article (peer-reviewed)abstract
- <b><i>Background/Objective:</i></b> It has been suggested that central auditory processing dysfunction might precede the development of cognitive decline and Alzheimer’s disease (AD). The Dichotic Digits Test (DDT) has been proposed as a test of central auditory function. Our objective was to evaluate the predictive capacity of the DDT in conversion from mild cognitive impairment (MCI) to dementia. <b><i>Methods:</i></b> A total of 57 participants (26 females) with MCI were tested at baseline with pure tone audiometry, speech in quiet and in noise, and the DDT. The cognitive outcome was retrieved from medical files after 5 years. Groupwise comparisons of the baseline DDT scores were performed and the relative risk was calculated. <b><i>Results:</i></b> Altogether 22 subjects developed any kind of dementia. Of the original 57 individuals within the MCI group, 15 developed AD and 7 developed other types of dementia. There was no significant difference in baseline DDT scores between the participants who converted to AD and those who did not. However, the group who developed other types of dementia (especially frontotemporal dementia) had lower DDT scores in the left ear than those participants who did not develop dementia. With a baseline DDT score below 50% correct responses, the participants diagnosed with MCI had a 2.49-times-higher risk of developing dementia than those with scores of 50% or better. <b><i>Conclusion:</i></b> The DDT as a central auditory test may be suitable when evaluating cognitive decline.
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