New AI Blood Test Detects Several Brain Diseases At Once

A patient may seem to fit Alzheimer’s disease, only to have signs that also resemble Parkinson’s disease or a past stroke. In many older adults, those conditions can overlap inside the brain, which helps explain why diagnosis is often messy, slow, and sometimes wrong. A new study from Lund University in Sweden suggests that a single blood sample, paired with artificial intelligence, may one day help sort out that confusion. Writing in Nature Medicine, researchers described an AI system called ProtAIDe-Dx that used blood-based protein patterns to detect several neurodegenerative conditions at the same time.