Summary: A new study highlights how food insecurity may intensify the relationship between gut microbiome imbalances and cognitive impairment in adults. Analyzing data from 360 participants, researchers found specific bacterial “cliques” linked to poor cognitive outcomes, especially among those with limited access to nutritious food.

Food insecurity itself was also independently associated with lower gut diversity and diminished brain function. These findings reveal a complex biological and social interplay influencing cognitive health and call for integrated interventions targeting both nutrition and microbiome balance.