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.

Prof Foltynie told the BBC News website: "This is the first clinical trial in actual patients with Parkinson's where there has been anything like this size of effect. "It gives us confidence ...

Parkinson’s disease is a progressive neurological condition. It involves the death of brain cells, especially those that make the signalling molecule dopamine. It is named after the English ...