Who Gets Parkinson’s Disease?
Medical researchers are not sure how Parkinson’s disease starts. It may be caused by a combination of factors both inside the body (such as genetic factors) and from the environment (such as toxins). It is difficult to predict who will get Parkinson’s disease.
Approximately 1 million people in the United States have Parkinson’s disease. Most people who develop Parkinson’s disease are 60 years old or older when the symptoms develop. Some people may develop Parkinson’s disease at a younger age (for example, in their 30s, 40s, or 50s).


