Research identifies olfactory deficits as indicators of cognitive decline, suggesting diagnostic improvements for Alzheimer's and mild cognitive impairment.
Odor-specific olfactory deficits serve as early indicators of cognitive decline. The Sniffin' Sticks test, particularly key odors, may aid early detection and differentiation of cognitive impairments. Accounting for covariates enhances the diagnostic accuracy. Future research should aim to refine olfactory testing protocols and assess their clinical utility in broader populations.
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Tasnim et al. (2026) studied this question.
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