Epidemiology of mild cognitive impairment in Brazil

Sonia Maria Dozzi Brucki1

  • 1MD, PhD. Cognitive Neurology and Behavioural Group. FMUSP. São Paulo SP, Brazil.

Insights

Mild cognitive impairment (MCI) affects 6.1% of Brazilians aged 60+, with an incidence of 13.2 per 1000 person-years. These rates are comparable to global findings for this pre-dementia condition.

Area of Science:

  • Gerontology
  • Neurology
  • Public Health

Background:

  • Global longevity is increasing, leading to a higher prevalence of age-related cognitive disorders.
  • Mild cognitive impairment (MCI) is recognized as a potential precursor to dementia.
  • Characterizing MCI prevalence and incidence is crucial for public health planning.

Purpose of the Study:

  • To review and synthesize existing data on the prevalence and incidence of MCI in Brazil.
  • To compare Brazilian MCI rates with those reported in international studies.

Main Methods:

  • A systematic literature search was conducted on the Pubmed and Scielo databases.
  • Keywords included "mild cognitive impairment," "prevalence," and "incidence."
  • Studies in English and Portuguese were included.

Main Results:

  • Only one study on MCI prevalence in Brazil was identified.
  • The Brazilian study reported a prevalence of 6.1% and an incidence of 13.2/1000 person-years in individuals aged 60 and over.
  • Prevalence rates from other countries were also compiled for comparison.

Conclusions:

  • The prevalence and incidence of MCI in Brazil appear to be similar to those observed in other countries.
  • Further research is needed to fully understand MCI epidemiology in Brazil.
  • These findings have implications for dementia prevention and care strategies.

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