"A growing number of Americans are living to age 100. Nationwide, the centenarian population has grown 65.8 percent over the past three decades, from 32,194 people who were age 100 or older in 1980 to 53,364 centenarians in 2010, according to new Census Bureau data."
Remember, these are people born before WWI, people who were over 50 before Neil Armstrong took his stroll. They didn't benefit from any of the advances in medicine, nutrition and fitness from the last 30 years until after they reached retirement age. For most baby boomers and younger people, whether you live to 100 or well beyond will depend on the lifestyle choices you make - as will the quality of life you enjoy as you age.
Quote is from: http://money.usnews.com/money/retirement/articles/2013/01/07/what-people-who-live-to-100-have-in-common