The abundance of antioxidants in blueberries has been shown to enhance brain performance and improve memory across all ages, as well as to enhance and protect brains in older adults.
Blueberry flavonoids interact directly with neurons at the molecular level, initiating signaling pathways that enhance connections between neurons, cell communication, and stimulate neuronal regeneration. They protect your brain from oxidative stress and reduce the effects of brain aging. Studies have also shown that they may help with memory. According to a systematic review analyzing over 12 studies, the science supports these findings.
The discovery of Pterostilbene; with scientific advancements, it has been possible to verify effects with this polyphenol, which is analogous to resveratrol but significantly more bioavailable and with greater oral and cellular absorption.
These studies were conducted in children (n = 5), young adults (n = 1), and older adults without known cognitive impairment (n = 4) or with indicated cognitive impairment (n = 2).
Eight studies reported consumption or supplementation of blueberries at various doses and durations to improve measures of cognitive performance, particularly short-term and long-term memory, and spatial memory. One study also showed significant improvements in mood.