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RECRUITING
NCT07177781
NA

Effects of Wild Blueberry Consumption on Brain Function in Elderly

Sponsor: Maastricht University Medical Center

View on ClinicalTrials.gov

Summary

Impaired brain vascular function precedes the development of reduced cognitive performance, while brain insulin-resistance is associated with cognitive decline. Evidence from epidemiological studies has already suggested beneficial effects of wild blueberry consumption on cognitive performance. However, underlying mechanisms have not yet been established, while well-controlled trials on longer-term effects of wild blueberries on cognitive performance are highly needed. This study hypothesizes that longer-term wild blueberry intake improves (regional) brain vascular function and insulin-sensitivity, thereby improving cognitive performance in older men and women. The primary objectives are to investigate in older adults the effect wild blueberry consumption on (regional) vascular function and insulin-sensitivity in the brain, and to focus on changes in cognitive performance as assessed with the CANTAB neuropsychological test battery (i.e., secondary objective). Cerebral blood flow responses before (brain vascular function) and after the administration of intranasal insulin spray (brain insulin-sensitivity) will be non-invasively quantified by the non-invasive gold standard magnetic resonance imaging (MRI)- perfusion method Arterial Spin Labeling (ASL).

Official title: Longer-term Effects of Wild Blueberry Consumption on Brain Function in Older Men and Women

Key Details

Gender

All

Age Range

60 Years - 75 Years

Study Type

INTERVENTIONAL

Enrollment

36

Start Date

2024-12-05

Completion Date

2026-08-31

Last Updated

2025-09-17

Healthy Volunteers

Yes

Interventions

DIETARY_SUPPLEMENT

Wild blueberry powder

Study volunteers will consume daily 26 grams of wild blueberry powder for 16 weeks, which has to be dissolved in a glass of water.

Locations (1)

Maastricht University, Departement of Nutrition and Movement Sciences

Maastricht, Limburg, Netherlands