Countless celebrity patients are now associated with various diseases. What lessons do these cases teach the public?

Measuring how deeply people inhale could alert doctors to the onset of neurodegenerative disorders like Alzheimer’s and Parkinson’s.

A treatment that involves slipping billions of copies of a gene into the brain seemed to improve symptoms without causing side effects.

Susan L. Lindquist performs imaginative research into how proteins function that reveals clues to how diseases like Parkinson’s and Alzheimer’s develop.

The Vatican’s decision on the veracity of a French nun’s story of being cured of Parkinson’s disease is crucial to making Pope John Paul II a saint.