Follow the research.

Wild-blueberry juice and memory in older adults

Krikorian and colleagues · 2010

Nine older adults with early memory changes drank wild-blueberry juice for 12 weeks. Some memory measures improved from baseline. The small preliminary study and its comparison design make it a starting point for further research, rather than a firm conclusion about memory benefits.

Wild blueberries, memory and attention in children

Whyte and colleagues · 2016

In a double-blind crossover trial, 21 children aged 7–10 consumed placebo or drinks containing freeze-dried wild-blueberry powder. Researchers tested memory and attention over the following six hours. Benefits appeared on particular tasks and at particular times; the study does not establish a general improvement in learning.

Wild blueberries, blood vessels and cognition in older adults

Wood and colleagues · 2023

A 12-week randomized trial enrolled 61 healthy adults aged 65–80 and compared daily freeze-dried wild-blueberry powder with placebo. Researchers reported improvements in blood-vessel function and some cognitive measures, with mixed findings across memory tasks. Read the accompanying 2025 correction alongside the original paper.

Read the published correction

Correction to the 2023 older-adult trial

The American Journal of Clinical Nutrition · 2025

This published correction accompanies the Wood and colleagues trial. It updates the published record, including the presentation of vascular and cognitive results. It should be read with the original study; it is not a separate trial.

Read the original study

Short-term vascular response to a wild-blueberry drink

Rendine and colleagues · 2026

Twenty healthy young adults took part in a placebo-controlled crossover trial of a 300 mL drink made with freeze-dried wild-blueberry powder. Measurements taken two hours later showed no overall treatment effect on the tested vascular and adhesion markers. The authors call for larger and longer studies.

How gut bacteria transform plant compounds

Mechanisms of gut bacterial metabolism of dietary polyphenols into bioactive compounds · 2024

This review explains how gut bacteria break down dietary polyphenols into smaller compounds, and how those products may interact with the body. It brings together possible mechanisms and research questions; it is not a clinical trial of blueberry juice.

Flavonoids and the function of blood vessels

The Effects of Flavonoids on Cardiovascular Health · 2018

A review of human intervention trials involving flavonoids from foods such as cocoa, apples, tea and berries. It examines blood-vessel function and blood flow, including implications for the brain. The foods, doses and study designs vary, so findings should be interpreted in that context.

The Canadian wild-blueberry research library

Wild Blueberry Association of North America · Canada

An association-maintained collection of research publications about wild blueberries. Use it to explore further papers and topics beyond the studies summarized on our site. This is a research directory, rather than a single study.

Explore wild-blueberry research areas

Wild Blueberry Association of North America · United States

The association’s research resource introduces research themes and provides access to its publication collection. It is a starting point for finding studies across several areas of health, rather than evidence from one experiment.

An overview of wild-blueberry health research

Wild Blueberry Association of North America · Canada

An association overview of the questions scientists investigate about wild blueberries and health. It provides context and routes to further research. For study design, results and limitations, follow the individual publications.

Wild blueberries and brain-health research

Wild Blueberry Association of North America · United States

An association introduction to research on cognition and brain health across different ages. It summarizes an area of investigation and points to supporting research; it is not itself a clinical trial.

What is in a wild blueberry?

University of Maine Cooperative Extension

An educational resource about wild-blueberry compounds, vitamins, minerals and laboratory antioxidant measurements. It helps explain the berry’s composition. A laboratory measurement of a food is different from a demonstrated health effect in people.

The Bar Harbor research group

Wild Blueberry Association of North America · Canada

Background on the scientific meetings and collaboration associated with wild-blueberry research. This resource explains how researchers exchange findings and develop questions; it is not a report of a single intervention.