Cause of Parkinson's Disease
Normal Aging Theory
Yet another theory proposes that Parkinson's disease occurs when, for unknown reasons, the normal, age-related wearing away of dopamine-producing neurons accelerates in certain individuals. This theory is supported by the knowledge that a loss of antioxidative protective mechanisms is associated with both Parkinson's disease and increasing age.
Many researchers believe that a combination of these four mechanisms -- oxidative damage, environmental toxins, genetic predisposition, and accelerated aging -- may ultimately be proven as the Parkinson's disease cause.