The Exam Room by the Physicians Committee The Blueberry Effect: The Fruit That Protects Your Brain, Heart, and Waistline
Feb 7, 2026
Dr. Leslie Wada, Senior Director at the U.S. Highbush Blueberry Council who runs human blueberry trials, and Dr. Neal Barnard, physician and plant-based nutrition advocate, discuss blueberry science. They cover cognitive and mood benefits, anti-inflammatory anthocyanins, heart and vascular effects, ideal intake (~1 cup/day), and practical ways to eat blueberries, including frozen and creative recipes.
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Blueberries Boost Learning And Recall
- Blueberries have been tested for effects on learning and recall, especially in older adults.
- Anthocyanin-rich foods show promise as simple, diet-based supports for cognition.
Target One Cup A Day
- Aim for about one cup of blueberries daily, the amount most funded studies used.
- Smaller amounts may still help, since many people consume none at baseline.
Anthocyanins Linked To Lower Alzheimer’s Risk
- High anthocyanin intake associated with reduced Alzheimer's risk in UK Biobank data.
- APOE-e4 carriers showed especially large risk reductions with high anthocyanin intake.
