Prevalence of dementia and mild cognitive impairment in indigenous Bolivian forager-horticulturalists.
Alzheimers Dement
; 19(1): 44-55, 2023 01.
Article
em En
| MEDLINE
| ID: mdl-35262289
ABSTRACT
INTRODUCTION:
We evaluated the prevalence of dementia and mild cognitive impairment (MCI) in indigenous Tsimane and Moseten, who lead a subsistence lifestyle.METHODS:
Participants from population-based samples ≥ 60 years of age (n = 623) were assessed using adapted versions of the Modified Mini-Mental State Examination, informant interview, longitudinal cognitive testing and brain computed tomography (CT) scans.RESULTS:
Tsimane exhibited five cases of dementia (among n = 435; crude prevalence = 1.2%, 95% confidence interval [CI] 0.4, 2.7); Moseten exhibited one case (among n = 169; crude prevalence = 0.6%, 95% CI 0.0, 3.2), all age ≥ 80 years. Age-standardized MCI prevalence was 7.7% (95% CI 5.2, 10.3) in Tsimane and 9.8% (95% CI 4.9, 14.6) in Moseten. Cognitive impairment was associated with visuospatial impairments, parkinsonian symptoms, and vascular calcification in the basal ganglia.DISCUSSION:
The prevalence of dementia in this cohort is among the lowest in the world. Widespread intracranial medial arterial calcifications suggest a previously unrecognized, non-Alzheimer's disease (AD) dementia phenotype.Palavras-chave
Texto completo:
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Base de dados:
MEDLINE
Assunto principal:
Demência
/
Doença de Alzheimer
/
Disfunção Cognitiva
Tipo de estudo:
Prevalence_studies
/
Risk_factors_studies
Limite:
Humans
País como assunto:
America do sul
/
Bolivia
Idioma:
En
Ano de publicação:
2023
Tipo de documento:
Article