Curie Brief
Turn on cookies to sign in
Signing in saves your progress to your Curie account. We can only do that with cookies on — turn them on to continue.
News
Could a handful of blueberries a day help ease the blues? A small pilot study found that older adults who consumed blueberry powder daily for three months showed greater reductions in depressive symptoms and subtle shifts in gut microbial enzyme activity. The mood improvements weren't statistically significant compared to placebo, but the findings hint at a fascinating gut-brain link worth exploring further.
Could a daily dose of blueberries help lift the mood of older adults? A small pilot study published in the Journal of Nutrition, Health and Aging suggests it might — at least partially through the gut. Researchers from Harvard Medical School and Hebrew SeniorLife found that older adults who consumed 48 grams of blueberry powder daily (roughly two cups of fresh berries) for three months showed a greater and more consistent reduction in depressive symptoms compared to those on a placebo.
The catch? The mood improvements didn't reach statistical significance. Still, researchers detected meaningful shifts in gut microbial enzyme genes — including one linked to GABA production, a key neurotransmitter in brain signaling — pointing to a possible gut-brain pathway worth investigating in larger trials.
By the Numbers:
Why it matters: With depression on the rise among older adults and limited well-tolerated treatment options in this population, dietary interventions like blueberry consumption offer a low-risk, accessible avenue for future research. Larger, more powered trials are needed to confirm whether this gut-brain connection translates into real clinical benefit.
