A growing body of research suggests the health of your gut may play a larger role in brain aging than once believed. A recent review found that altering the gut microbiome through diet, probiotics, and other interventions may help support cognitive function and potentially slow decline, particularly in older adults.
Scientists point to the gut-brain axis, a communication network linking the digestive system and the brain. Changes in gut bacteria may influence inflammation, neurotransmitter activity, and the production of compounds that affect brain health. In some studies, these shifts were associated with improvements in memory, executive function, and overall cognitive performance.
While the findings are promising, experts caution that research in this area is still evolving. Larger and longer-term studies are needed to determine how specific interventions work and who may benefit most. Still, researchers say targeting the gut microbiome could become an important strategy for maintaining brain health as people age.
SOURCE:
Medical News Today, April 1, 2026