Clinicians, scientists and public health professionals should proudly “declare victory” in their efforts to extend the human lifespan to its very limits, according to University of Illinois at Chicago epidemiologist S. Jay Olshansky.
In an article published in the Journal of the American Medical Association, Olshansky writes that the focus should shift to compressing the “red zone” — the time at the end of life characterized by frailty and disease, and extending the “healthspan” — the length of time when a person is alive and healthy.
Olshansky, professor of epidemiology in the UIC School of Public Health, discusses how human longevity has reached into its upper limits and has little room for further gains. He notes that at the turn of the 20th century, life expectancy at birth in most developed nations ranged from 45 to 50 years. With the emergence of major public health initiatives in the late 19th century — including sanitation and the public provision of clean water — mortality rates dropped, and life expectancy increased rapidly. The rise in longevity has slowed considerably in recent decades, and maximum lifespan has never changed much throughout human history.
Today, 96 percent of infants born in developed nations will live to age 50 and older, more than 84 percent will survive to age 65 or older, and 75 percent of all deaths will occur between the ages of 65 and 95 years old.
He also addresses the controversy that has erupted in the media lately over whether the human lifespan can increase indefinitely.
“There’s been a lot of focus in the news lately about what is the maximum human lifespan, with some researchers claiming that it has the potential to be infinite, but there is a biologically based limit imposed largely by the way in which our bodies are designed, and it can be expressed mathematically,” Olshansky said.
Based on the science and medicine available today, he contends that the probability of any significant increase in maximum lifespan in this century is remote.
“There is reason to be optimistic that future breakthroughs in aging biology, if pursued, could allow humanity to live healthier longer,” Olshansky said. “Some experts suggest that if death rates plateau at older ages, lifespans may continue to increase. This latter view has been challenged by the fact that an unrealistically high number of people would have to survive to age 105 (estimated 262,200) just for one person to exceed the world record for longevity by one year to 123 years.”
The downside of extremely long lifespans is that disease and disability tend to pile up toward the end of life.
“You don’t want to live to be over 100 years old if the last 20 years of your life are spent in pain and sickness,” Olshansky said. “Ideally, you want to compress the years of decay and disease — what I call the ‘red zone’ — into as few as possible at the very end of life. We should not continue to pursue life extension without considering the health consequences of living longer lives.”
Clinical trials that target aging have been approved by the Food and Drug Administration, and the American Federation for Aging Research is leading global efforts to secure funding for geroscience-related initiatives.
“This will be the only way science can push through the biological barriers to life extension that exist today,” he said. “Life extension should no longer be the primary goal of medicine when applied to people over age 65 — the principal outcome and most important metric of success should be extension of the healthspan.”
Olshansky cautions that despite longevity-related progress, many disparities are largely unresolved.
“Not everyone has access to health care, nutritious food, opportunities to get exercise and education that contribute to long lifespans,” he said.
The Latest on: Health extension
via Google News
The Latest on: Health extension
- ISU Extension: Health benefits of nutson October 15, 2019 at 12:10 pm
Woman attacked ex-boyfriend and new girlfriend with knife, glass bottle and broke down door. Des Moines man beaten by 20 men in a skywalk. Des Moines police are looking for 20 men who beat a man while ...
- Life Extension and Reader's Digest Unveil the First-Ever "Community Health Heroes" Honoreeson October 11, 2019 at 7:45 pm
Oct. 11, 2019 /PRNewswire/ -- Today, the first ever "Community Health Heroes" were announced by Life Extension and Reader's Digest. "Community Health Heroes" is a companion program to Reader's ...
- Health extension workers raising funds to sue ministryon September 16, 2019 at 9:15 am
SIX hundred and forty-seven health extension workers have decided to open a trust fund account to raise money that should enable them to hire a lawyer to take the health ministry to court. In a ...
- Namibia: Health Extension Workers Raising Funds to Sue Ministryon September 15, 2019 at 5:00 pm
Six hundred and forty-seven health extension workers have decided to open a trust fund account to raise money that should enable them to hire a lawyer to take the health ministry to court. In a ...
- Health extension workers' case drags onon July 17, 2019 at 6:35 pm
A MEETING between unemployed health extension workers and legal representatives from the ministry of health held in Windhoek last Wednesday to resolve issues, was postponed to 10 July. During the ...
- Health Extension for Diabetes (HED)on July 3, 2019 at 9:27 am
As part of the Healthy Greenville 2036 initiative, Health Extension for Diabetes (HED) is made possible through a grant funded by the Greenville Health Authority. A collaboration between Greenville ...
- Health ministry’s proposed community health extension workers missed a pointon March 30, 2019 at 4:04 am
the Ministry of Health has been proposing the creation of a new cadre of health workers - called community health extension workers (CHEWs)- to address our rural health challenges. But recent news ...
- ‘The Phone is My Boss and My Helper’ – A Gender Analysis of an mHealth Intervention with Health Extension Workers in Southern Ethiopiaon November 30, 2018 at 4:00 pm
Mobile health (mHealth) provides health services and information via mobile technologies, including mobile phones. There is considerable optimism in mHealth’s potential to overcome health systems’ ...
- Namibia: Health Extension Workers Demand Answers From Govton November 7, 2018 at 2:30 am
FORTY of the 640 health extension workers who were promised employment by the health ministry through the health extension programme are camping out at the Zoo Park in Windhoek for the next four days ...
via Bing News