Brought into the limelight by actor Michael J. Fox, Parkinson's disease affects the body's ability to control movement.

Parkinson's disease is an illness that affects the part of your brain that controls how you move your body. Some people with Parkinson’s first notice weakness, difficulty walking, and stiff muscles.

Scientists have finally pinned down a protein that’s largely responsible for Parkinson’s disease. Known as PINK1, the protein has been linked to the disease for decades but its structure and ...