What is Healthy Aging?

by Nina

Despite the horrifying vision of “exergames,” Brad’s post on Tuesday ("Successful Aging and the Thinking-Moving-Feeling Triad") got me interested in Dr. Dilip Jeste’s work. After all we’re all blogging away here about “healthy aging” without ever having really defined what it is. And that’s exactly what Dr. Jeste, Estelle and Edgar Levi Chair in Aging and Director of the Sam and Rose Stein Institute for Research on Aging at the University of California, San Diego, is currently trying to do. In an interview on Medscape (here), he said the following:

“Successful aging has not been consistently defined; that is one reason why this area is ideal for research. There have been some studies funded by the MacArthur Foundation beginning in the mid-1980s going on through the mid-1990s. But the [scientific] literature is limited, and there is no consensus on what is successful aging. Our research goals include developing a definition as well as criteria for successful aging.”

Jeste and his colleagues observed that while the components of successful aging typically include: longevity, life satisfaction, absence of physical disease, freedom from disability, mastery/growth, active engagement with life, high/independent living, and positive adaptation, sometimes only physical functioning and disability are considered. But most importantly, very few scientists include “self rating” in their assessments (that is, to put it bluntly, they don’t bother asking the subjects how they feel about their own experience of aging). So they decided to do a study in which “participants’ subjective ratings of successful aging were contrasted with sets of researcher-defined criteria, and correlates of subjectively rated successful aging were examined.” (See "Correlates of self-rated successful aging among community-dwelling older adults".)

One result of this study was this: “Nearly all the study participants rated themselves as aging successfully, but far fewer met researcher-defined criteria for absence of illness and physical disability.” (Note that only participants with higher levels of cognitive functioning were studied.)

Dr. Jeste concluded, as he said in the Medscape interview, “It is also important to say what is not an essential part of successful aging—absence of either physical diseases or physical disability is not necessarily a part of successful aging. I want to stress that people who have physical illnesses or physical disabilities can be aging successfully.” Instead he lists the components for successful aging as:

•    Higher level of cognitive functioning
•    Adaptation to changes associated with aging
•    Socialization—that is, some kind of social activity and/or social contacts
•    Life satisfaction

And in the very same interview, he gives two examples of people he considers to have aged successfully, and they are: Franklin Roosevelt and Frank White, a well-known Los Angeles yoga teacher. Hmmm. It appears we're not on different wavelengths after all. You may want to watch this video of Dr. Dilip, in which he speaks about wisdom and successful aging. Around the 12-minute mark, you can hear him speak about the Bhagavad Gita.

For some time now, I’ve been going around saying that yoga provides two out of the three of the requirements for healthy aging: exercise and stress reduction (the third is a healthy diet). As of today, I’m going to add a new one: wisdom.