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The cause of Parkinson’s disease (PD) is unknown, but scientists believe that a combination of genetic and environmental factors are the cause. The extent to which each factor is involved varies from person to person. Regardless of how a person gets Parkinson’s — through genetics or environment or a combination of both — every person with PD experiences a loss of dopamine in the brain, along with symptoms and a progression of their disease that is unique to them.

For more insights on this topic, listen to our podcast episode "Genetics and PD: What do we know so far?"

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