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Educational disparities in brain health and dementia across Latin America and the United States

  • Raul Gonzalez-Gomez
  • , Agustina Legaz
  • , Sebastián Moguilner
  • , Josephine Cruzat
  • , Hernán Hernández
  • , Sandra Baez
  • , Rafael Cocchi
  • , Carlos Coronel-Olivero
  • , Vicente Medel
  • , Enzo Tagliazuchi
  • , Joaquín Migeot
  • , Carolina Ochoa-Rosales
  • , Marcelo Adrián Maito
  • , Pablo Reyes
  • , Hernando Santamaria Garcia
  • , Maria E. Godoy
  • , Shireen Javandel
  • , Adolfo M. García
  • , Diana L. Matallana
  • , José Alberto Avila-Funes
  • Andrea Slachevsky, María I. Behrens, Nilton Custodio, Juan F. Cardona, Ignacio L. Brusco, Martín A. Bruno, Ana L. Sosa Ortiz, Stefanie D. Pina-Escudero, Leonel T. Takada, Elisa de Paula França Resende, Victor Valcour, Katherine L. Possin, Maira Okada de Oliveira, Francisco Lopera, Brian Lawlor, Kun Hu, Bruce Miller, Jennifer S. Yokoyama, Cecilia Gonzalez Campo, Agustin Ibañez
  • Universidad Adolfo Ibáñez
  • Universidad de San Andrés
  • Rosario
  • Harvard University
  • Trinity College Dublin
  • Universidad de los Andes Colombia
  • University of California at San Francisco
  • Facultad de Ciencias, Centro Interdisciplinario de Neurociencia de Valparaíso, Universidad de Valparaíso
  • Universidad de Buenos Aires
  • Universidad de Buenos Aires and Instituto de Física de Buenos Aires (IFIBA -CONICET)
  • Hospital Universitario San Ignacio
  • University of Santiago of Chile (USACH)
  • Instituto Nacional de Ciencias Medicas y Nutricion Salvador Zubiran
  • Geroscience Center for Brain Health and Metabolism (GERO)
  • Universidad de Chile
  • Universidad del Desarrollo
  • Peruvian National Institute of Health
  • Universidad del Valle
  • Universidad Católica de Cuyo
  • Instituto Nacional de Neurologia y Neurocirugia
  • Universidade de São Paulo
  • Universidade Federal de Minas Gerais
  • Universidad de Antioquia

Research output: Contribution to journalArticlepeer-review

45 Scopus citations

Abstract

BACKGROUND: Education influences brain health and dementia. However, its impact across regions, specifically Latin America (LA) and the United States (US), is unknown. METHODS: A total of 1412 participants comprising controls, patients with Alzheimer's disease (AD), and frontotemporal lobar degeneration (FTLD) from LA and the US were included. We studied the association of education with brain volume and functional connectivity while controlling for imaging quality and variability, age, sex, total intracranial volume (TIV), and recording type. RESULTS: Education influenced brain measures, explaining 24%–98% of the geographical differences. The educational disparities between LA and the US were associated with gray matter volume and connectivity variations, especially in LA and AD patients. Education emerged as a critical factor in classifying aging and dementia across regions. DISCUSSION: The results underscore the impact of education on brain structure and function in LA, highlighting the importance of incorporating educational factors into diagnosing, care, and prevention, and emphasizing the need for global diversity in research. Highlights: Lower education was linked to reduced brain volume and connectivity in healthy controls (HCs), Alzheimer's disease (AD), and frontotemporal lobar degeneration (FTLD). Latin American cohorts have lower educational levels compared to the those in the United States. Educational disparities majorly drive brain health differences between regions. Educational differences were significant in both conditions, but more in AD than FTLD. Education stands as a critical factor in classifying aging and dementia across regions.

Original languageEnglish
Pages (from-to)5912-5925
Number of pages14
JournalAlzheimer's and Dementia
Volume20
Issue number9
DOIs
StatePublished - Sep 2024

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

  1. SDG 3 - Good Health and Well-being
    SDG 3 Good Health and Well-being

Keywords

  • Latin America
  • United States
  • dementia
  • educational disparities
  • healthy aging
  • magnetic resonance imaging

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