A loss of the sense of smell or acting out one’s dreams can occur years in advance.

New research suggests that changes in the mouth and gut bacteria of Parkinson’s disease patients could signal an early worsening of their symptoms. Scientists, utilising artificial intelligence (AI), ...

People suffering from Alzheimer's and Parkinson's disease may experience a loss of smell long before other symptoms become ...

Depression that appears later in life is often viewed as a response to declining health, but emerging evidence suggests it may sometimes signal deeper neurological changes.

Snoring isn’t always tied to a medical condition—sometimes you just need to lay on your side for it to disappear. But for the 30 million people in the United States whose snoring comes from ...