By Vijay Kumar Malesu Reviewed by Lauren Hardaker Nov 27 2025 Scientists trace alcohol’s impact from the gut to the brain, uncovering microbial changes that weaken the blood-brain barrier, and a probiotic that helps repair it. Study: Chronic alcohol consumption disrupts the integrity of the blood-brain barrier through the gut-brain axis. Image credit: Syda Productions/Shutterstock.com In a recent study published in Communications Biology , a group of researchers determined whether chronic