Raspberry meal improved some short-term metabolic and cognitive measures
A crossover trial in older adults with overweight or obesity found lower peak glucose and better cognitive test performance after a raspberry-containing meal.
Based on the published abstract. The full paper may contain additional methods, results and limitations.
The 30-second takeaway
The raspberry meal lowered peak blood glucose and improved performance on selected cognitive tests in this acute trial. Insulin responses were also lower, while vascular function showed no statistically significant difference. These findings describe responses after a test meal in a specific group; they do not establish lasting cognitive benefits or prevention of metabolic disease.
The study tested acute responses, not sustained dietary effects. Its inflammation experiments used participants' serum on cultured cells, so they do not demonstrate reduced inflammation in the participants' brains.
What researchers found
Peak post-meal blood glucose
Raspberry meal versus control during post-meal testing; the difference was statistically significant.
Which cognitive measures changed?
Participants made fewer attempts on an associative learning task and fewer errors, with better strategy use, on a working-memory task after the raspberry meal. The abstract does not provide effect sizes for these changes.
Where the inflammation result came from
Researchers exposed stimulated microglial cells to serum collected from participants. Serum from the raspberry condition reduced several inflammatory responses in those cells. This was a laboratory experiment alongside the human meal study.
The original publication
Red raspberry improves postprandial metabolic indices and cognitive function in older adults who are overweight or have obesity.
Xiao D, Shukitt-Hale B, Rutledge GA et al.
Br J Nutr · 2026
- PubMed ID
- 41536265
- Record checked
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