Is there a link between poor quality diet and dementia?


  • Highly processed food consumed in incremental quantities is linked to increased risk for all-cause dementia and its two major components, vascular dementia and Alzheimer’s disease. Replacing these foods with equivalent amounts unprocessed food reduces risk for these diseases.

Why this matters

  • Consumption of ultra-processed foods (UPF) is associated with increased risk for adverse health-related outcomes; however, the impact of poor diet quality on risk for dementia is unclear. 

  • There are limited pharmacological treatments to manage symptoms of dementia, which remains a terminal illness. Educating people about the health impact of UPFs and encouraging dietary changes could be a simple strategy to reduce risk for this debilitating disease.