A new test needs only a blood sample to detect a novel marker of Alzheimer's disease neurodegeneration, researchers report.

Low levels of ergothioneine, a diet-derived compound in blood plasma, may help identify older adults at risk of developing dementia.

The shape of certain proteins in spinal fluid may be a sign of Parkinson's disease, according to new research.

College students who reported recent thoughts of suicide have different bacteria in their saliva than those who didn't, a new study shows.

A new blood test could complement standard methods for lung cancer screening without the need for biopsy, researchers report.

Researchers have found a link between gut bacteria differences and fibromyalgia severity. The work also points to a biological signature for the disease.

A new study reveals that two newly identified plasma biomarkers of Alzheimer’s disease can predict postoperative delirium, one of the most common postoperative complications in older patients.

The first dinosaurs had metabolisms akin to today's birds. "Dinosaurs included remarkably swift and agile animals," says Derek Briggs.

Many doctors currently diagnose skin conditions by eye. Advances in molecular testing could lead to more precise and accurate diagnoses for ambiguous rashes and skin lesions.

A new blood test is more accurate than current methods at predicting preeclampsia, a leading cause of severe maternal and neonatal illness and death.