Exercise and eating right may reduce your risk—and help those with the condition, too

It may start with nothing more than a tremor in one hand. But Parkinson’s disease, caused by the death of dopamine-­producing nerve cells in the brain that help control movement and norepinephrine-­producing nerve endings that control body functions, is progressive—leading to ever-worsening symptoms.

Consumer Reports: What You Must Know About Parkinson’s Disease