RENEE MONTAGNE, host:
Commentator Mark Lachs sees most of his patients the old fashioned way. He's a gerontologist and Lachs says his oldest patients aren't necessarily the most at risk.
Dr. MARK LACH (Weill Cornell Medical College): I have a 98-year-old patient who's not only independent but rather quite dashing. And he recently asked me a series of questions that reminded me of one of the most intriguing scientific papers in all of gerontology.
Is it okay if he has a little cheese and butter from time to time? In modest amounts, he assured me. Is an occasional glass of wine okay? And here's the kicker. Is it still safe for him to make his annual solo pilgrimage to Switzerland, where he enjoys fresh air and a good hike?
The answers? Yes, yes, and yes.
Now, look, advancing age is a risk factor for a variety of medical conditions, as well as shoving off this mortal coil. But what if I told you there's kind of an escape velocity - an age at which the risk of death and disability actually begins to fall?
In a stunning paper a decade ago, James Vaupel of the Max Planck Institute looked at the evidence for this hypothesis in lower and higher organisms -yeast, fruit flies, worms - and yes, humans - and he came to this startling conclusion: At the extremes of age in all these species, rates of death actually drop.
And here's the cherry-on-top finale of that paper: Vaupel decided to see if the data pattern is limited only to living things. So he looked at death rates for - are you ready for this? - automobiles. Here "death," quote-unquote, was defined as when a car's owner stops registering it. And indeed, the same escape velocity pattern was seen with old clunkers.
A subset of motor vehicles are simply unstoppable - the old Chevy or Honda that keeps going and going and going. Sure, it needs a few replacement parts over its long life, and it certainly gets dinged and dented, but after passing some astronomical odometer reading, the damn thing seems to be nearly indestructible.
We've all had certain inspirational people in our lives who behave the same way. Stated differently, things and people in motion tend to stay in motion, and those that don't stop - or worse. And the older you get, the older you are likely going to get. So I'd argue that my 98-year-old patient's wish to take his annual stroll in the Alps is probably not only safe but actually therapeutic. I'm not a Pollyanna. We all have to go sometime. But like many of my patients, he seems to have achieved escape velocity. And there's no reason for him to stop now.
Maybe the comedian George Burns, when asked about the secret to his longevity, had it right, but for the wrong reason. The key, he said, is to make it to 100, because very rarely do you read about people dying after that age.
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MONTAGNE: Commentator Mark Lachs is director of geriatrics for the New York Presbyterian Health Care System and professor of medicine at Weill Cornell Medical College. He's the author of "Treat Me, Not My Age."
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