Living longer is a far cry from aging well. Not many of us would want to live for an extensive time after our quality of life had significantly deteriorated, yet as a species we are surviving to much greater ages than our ancestors. A few people manage to achieve the best possible outcome, a very long and healthy life.
Of course, much can be explained away in terms of access to good nutrition, healthcare and educating ourselves against life shortening toxins such as smoking, but not all longevity can be attributed to environmental…