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Salud Pública

Mengjia Zhao1, Minqing Yan2, Hui Chen1

  • 1Zhejiang University School of Medicine, Hangzhou, Zhejiang, China.

Alzheimer's & dementia : the journal of the Alzheimer's Association
|December 23, 2025
PubMed
Resumen
Este resumen es generado por máquina.

El consumo regular de frutos secos se asocia con un menor riesgo de demencia en adultos mayores. Este hábito alimentario puede ser una estrategia clave para mantener la salud cerebral y prevenir el deterioro cognitivo.

Palabras clave:
frutos secosdemenciasalud cerebralprevenciónadultos mayoresnutrición

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Área de la Ciencia:

  • Neurología
  • Ciencia de la Nutrición
  • Gerontología

Sus antecedentes:

  • La demencia presenta un desafío de salud significativo para las poblaciones que envejecen, lo que requiere medidas preventivas efectivas.
  • La investigación emergente sugiere un vínculo potencial entre el consumo de frutos secos y la mejora de la salud cerebral, aunque se necesita más evidencia.

Objetivo del estudio:

  • Investigar la asociación entre el consumo de frutos secos y el riesgo de desarrollar demencia en adultos de mediana edad y mayores.
  • Determinar si la ingesta de frutos secos puede ser una estrategia viable para la prevención de la demencia.

Principales métodos:

  • Análisis de datos de tres grandes estudios de cohortes: Health and Retirement Study (HRS), Framingham Offspring Study (FOS) y Whitehall II study (WHII).
  • Participantes (mayores de 45 años) estaban libres de demencia al inicio del estudio y se evaluó su consumo de frutos secos mediante cuestionarios de frecuencia de alimentos.
  • Se monitorizó la demencia incidente durante períodos de seguimiento prolongados utilizando métodos validados específicos para cada estudio.

Principales resultados:

  • Un mayor consumo de frutos secos se correlacionó con un riesgo significativamente menor de demencia incidente.
  • Se observó una relación dosis-respuesta: el consumo de 0,1-5,0 g/día (HR: 0,79) y >5,0 g/día (HR: 0,76) de frutos secos se asoció con un menor riesgo de demencia en comparación con la no ingesta de frutos secos.
  • Estas asociaciones se mantuvieron consistentes en varios subgrupos demográficos.

Conclusiones:

  • Un mayor consumo de frutos secos se asocia con un menor riesgo de demencia de manera dosis-dependiente en adultos de mediana edad y mayores.
  • El consumo de frutos secos emerge como una estrategia dietética prometedora y accesible para promover la salud cerebral a largo plazo y la prevención de la demencia.