S. Jay Olshansky
S. Jay Olshansky
Stuart Jay Olshanskyis a professor in the School of Public Health at the University of Illinois at Chicago concentrating on biodemography and gerontology...
NationalityAmerican
ProfessionScientist
Date of Birth22 February 1954
CountryUnited States of America
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Reducing caloric intake is the only proven method of extending life. If caloric intake is reduced to 20 percent below maintenance, you can extend your lifespan considerably.
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The real problem is that there's a tendency to associate ageing with loss and decline and things that aren't desirable. But experiencing all that there is to experience in life - whether that's at the age of ten or thirty or fifty or eighty - is what life is all about.
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In centenarians and supercentenarians - people over 110 - you see a higher level of fecundity much later in life.
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What we know for sure from our work and from others' is that mice have a life span of 1,000 days, dogs have 5,000 days, and we humans have 29,000 days. Recognizing that the duration is limited, and aging is inevitable, focus the attention on enhancing the quality of the days you have.
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The Faustian trade of the 20th century was, we got 30 years of additional life, but in return we got heart disease, cancer, stroke, Alzheimer's and sensory impairments. The question is: What Faustian trade are we making now, as we go after heart disease, cancer, stroke and Alzheimer's?
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While eliminating smallpox and curtailing cholera added decades of life to vast populations, cures for the chronic diseases of old age cannot have the same effect on life expectancy. A cure for cancer would be miraculous and welcome, but it would lead to only a three-year increase in life expectancy at birth.
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I'm not sure the least educated members of the population are missing out on the advances in medical technology as much as they are adopting harmful behavioral habits that shorten their life.
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I have little doubt that gerontologists will eventually find a way to avoid, or more likely, delay, the unpleasantries of extended life.
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The bodies we have are not made for extended use. We must cope with accumulated DNA damage, cell damage, muscle atrophy, bone loss, decreased muscle mass, and joints worn out from overuse during a lifetime of bipedal locomotion. It might have worked great for prehistoric humans, but it wreaks havoc on our knees and hips.
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The only control we have over the duration of our life is to shorten it, and we do that all the time.
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We're not trying to make us live forever; we're not trying to even make us live significantly longer. What we're trying to do is extend the period of healthy life.
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As long as humans have existed, we have always desired to live longer. Every society, every religion, every culture. Of course, they all failed at dramatic life extension.
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Our concepts of aging really should be blurring because there are plenty of people who make it to older ages who aren't really any different in many ways than people who are decades younger.
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People pushing the idea that everyone can live to be 100 are perpetuating a myth that goes all the way back to the Bible.