Michigan State University Mar 5 2026 When a cocaine addict relapses, it isn't a matter of personal failure - it's the biological result of their brain's rewiring, new research finds. Michigan State University scientists found that cocaine changes how the hippocampus functions, contributing to the ongoing compulsion to seek out the drug. Their National Institutes of Health-supported research, published in Science Advances , not only explains why cocaine addiction is notoriously difficult to