40+ Years
Previously it was thought that people with PWS would not live much past their early middle age, but there are now a significant number we know of who are in their 40s and 50s, and a few in their 60s. The oldest person we know of lived to be 74 years old. However, our knowledge of how PWS affects people in their later years is quite limited because very little research has been done in this area, and the number of people in this age group remains comparatively small.
