A landmark study of retirement community residents who lived past 90 is providing a guide that could help.

They’re  called “the oldest old.” They are people age 90 and above, and they are the fastest-growing segment of the U.S. population. Now a landmark study of thousands of members of a retirement community in Southern California is revealing factors that may contribute to living longer. Some of the findings are no surprise — smoking led to shorter lifespans, while those who exercised lived longer. Other findings were unexpected — vitamins did not prolong life, but carrying some extra weight did.

   Kurzweil AI