Psychiatry's DSM to integrate biology for first time

The American Psychiatric Association will incorporate biology into the next DSM edition, marking the first time the psychiatry manual uses biological measures for mental disorder diagnoses. This modernization aims to address criticism over the lack of objective tests. Currently, no scientifically valid biomarkers exist for psychiatric conditions except Alzheimer's proteins, due to subtle biological changes and overlapping disorder symptoms. Researchers highlight advances in Alzheimer's blood tests, immune factors like C-reactive protein, and polygenic risk scores as promising developments. The DSM provides a common language for clinicians, and integrating neuroscience could enable precise diagnoses and personalized treatment. However, researchers acknowledge the complexity of mental disorders, with environmental factors like trauma complicating biomarker development.