Common Diet Linked to Faster Brain Decline in Alzheimer's Risk Group
Summary
A study found that older adults with a genetic risk for Alzheimer's disease showed faster decline in attention if they ate a Western-style diet. The Western diet includes processed and fried foods, while a healthier diet with fruits and vegetables did not show the same effect. The study cannot prove diet causes brain decline, only that there is a link.Key Facts
- The study followed 185 older adults without dementia for up to 7.5 years.
- Researchers focused on people with the APOE ε4 gene, a known Alzheimer’s risk factor.
- APOE ε4 carriers who ate a Western diet had faster attention decline.
- The Western diet includes processed foods, red meats, fried foods, and sugary products.
- A healthier diet with fruits, vegetables, whole grains, and fish showed no significant effect on attention decline.
- The study was observational and cannot prove that diet causes brain decline.
- Results became weaker when participants with early signs of cognitive issues were removed.
- Experts say genetic testing and diet changes should be considered carefully and with medical advice.
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