APC Microbiome Ireland Apr 21 2026 New research from APC Microbiome Ireland, a world leading research centre at University College Cork, has comprehensively explored the mechanisms behind coffee's positive effects on the gut-brain axis for the first time. The study published in Nature Communications and sponsored by the Institute for Scientific Information on Coffee (ISIC), reveals how regular consumption of both caffeinated and decaffeinated coffee can affect the gut microbiome , and in turn