Have not read the full article yet, but the life expectancy mentioned seems possible in the next 50 years, and but it is but one view of a possible future and issues ahead…
The Political, Economic, and Cultural Implications of Radical Longevity
To begin exploring this possible future, imagine a society where life expectancy is 150 years, instead of today’s average of around 80 years in developed countries. People reach puberty and adulthood just the same as they do now, but aging in this hypothetical world occurs relative to these elongated lifespans. In other words, a 50-year-old in this future would be biologically akin to a 27-year-old today. A 100-year-old would have the body of a 53-year-old. What we now think of as the age of retirement, 65, would then be 122.