What Is Parkinson’s Disease? Parkinson’s disease is a disorder caused when nerves in your brain start to deteriorate. Nerves in your brain normally produce a chemical called dopamine to give you the ability to control your movements, body, and emotions. When you have Parkinson’s disease, your brain slowly stops producing dopamine. Therefore, over time, ...

An experimental gene therapy for a rare hereditary form of blindness is a step closer to reality. An FDA advisory panel voted unanimously Thursday to recommend approval of a groundbreaking treatment for people with a faulty gene that impairs vision. It would be the first gene therapy in the U.S. for an inherited disease. The ...