how is parkinson's passed down
Genetics and Parkinsonâs Disease. About 10 to 15 percent of all cases of Parkinsonâs are thought to be genetic forms of the disease. Genetics and Parkinsonâs Disease. Many people affected by Parkinsonâs disease want to know whether it can be passed down from one generation to the next. Directly inheriting the disease is quite rare. About 10 to 15 percent of all cases of Parkinsonâs are thought to be genetic forms of the disease.