Food insecurity is associated with mild cognitive impairment among middle-aged and older adults in south africa: Findings from a nationally representative survey

Ai Koyanagi, Nicola Veronese, Brendon Stubbs, Davy Vancampfort, Andrew Stickley, Hans Oh, Jae Il Shin, Sarah Jackson, Lee Smith, Elvira Lara

Research output: Contribution to journalArticle

Abstract

There are no studies on the association between food insecurity and mild cognitive impairment (MCI). Thus, cross-sectional, community-based data on individuals aged ≥50 years from the World Health Organization’s Study on Global AGEing and Adult Health (SAGE) conducted in South Africa (2007-2008) were analyzed to assess this association. The definition of MCI was based on the National Institute on Ageing-Alzheimer’s Association criteria. Past 12-month food insecurity was assessed with two questions on frequency of eating less and hunger due to lack of food. Multivariable logistic regression analysis was conducted. The sample consisted of 3,672 individuals aged ≥50 years [mean (SD) age 61.4 (18.3); 56% females]. The prevalence of MCI was 8.5%, while 11.0% and 20.8% experienced moderate and severe food insecurity, respectively. After adjustment for potential confounders, moderate and severe food insecurity were associated with 2.82 (95%CI = 1.65-4.84) and 2.51 (95%CI = 1.63-3.87) times higher odds for MCI compared with no food insecurity, respectively. The OR for those aged ≥65 years with severe food insecurity was particularly high (OR = 3.87; 95%CI = 2.20-6.81). In conclusion, food insecurity was strongly associated with MCI among South African older adults. Future longitudinal research is required to assess whether addressing food insecurity may reduce risk of MCI and subsequent dementia.

Original languageEnglish
Article number749
JournalNutrients
Volume11
Issue number4
DOIs
Publication statusPublished - 2019 Apr

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All Science Journal Classification (ASJC) codes

  • Food Science
  • Nutrition and Dietetics

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