Editor’s Note: The United Nations has declared 1999 to be the International Year of Older Persons. The celebrations for 1999 were officially launched by the Secretary General of the United Nations at New York headquarters on October 1, 1998. Included among the official schedule of events are several conferences and other initiatives designed to promote a healthy and physically active image of aging and older persons throughout the member states. A major event in the 1999 schedule is the World Congress on Physical Activity, Aging, and Sport, which will be held in Orlando. Florida, on August 10–14, 1999. In the following guest editorial. Dr. Alexandre Sidorenko, coordinator of the International Year of Older Persons and officer-in-charge for the United Nations Programme on Aging, shares his thoughts regarding the significance of the International Year of Older Persons.