Alzheimer's Research & Therapy
Lower smell scores preceded mild cognitive impairment
Among 922 older adults, those who developed mild cognitive impairment had lower smell-identification scores than those who remained stable up to 10 years earlier.Among 922 older adults, those who developed mild cognitive impairment had lower smell-identification scores than those who remained stable up to 10 years earlier.
Cohort · 633 peopleMild cognitive impairment
Who was studied633 cognitively unimpaired individuals without parkinsonism at enrollment
What changedSmell scores were lower up to 10 years before mild cognitive impairment, by 1.31 points at conversion versus cognitively stable participants
The catchSmell testing every three years and annual cognitive assessments blur the timing of changes