Q. Is the incidence of Parkinson’s disease increasing?

Taking all relevant factors into account, there is no evidence that the number of new cases of Parkinson’s disease (PD) is increasing. In fact the available data indicate that the incidence of PD has remained unchanged over the last 70 years (during which time modern synthetic pesticides were first used in U.S. and European farming). Because the incidence increases with age, it can be expected that as the population ages in Western society, more individuals with this disease will be present in the general population. Additionally, modern medicine has greatly prolonged life expectancy so that individuals with PD have the same life expectancy as unaffected people of the same age. The diagnosis of the disease is also becoming more sophisticated with the use of new technology.