THE PAVILIONS PHUKET BRITISH INTERNATIONAL SCHOOL, PHUKET Kata Rocks
Login | Create Account Poll Currency Weather Facebook Youtube Search

Human lifespan may not have peaked after all

Has the maximum lifespan for a human already been reached? Maybe not, said a study of Italian centenarians published Thursday that found that human longevity is slowly increasing.

HealthCommunity
By AFP

Monday 23 July 2018, 09:00AM


Getting over the plateau  Photo: Random Scientific Papers

Getting over the plateau Photo: Random Scientific Papers

Scientists have long debated whether or not the ultimate lifespan in people has been attained. A 2016 study in the journal Nature argued that it has, in 1997, when Frenchwoman Jeanne Calmant died at the record-breaking age of 122.

But the new findings in the journal Science point to the possibility for extended human longevity, and that our species' lifespans may increase over time.

Based on data from more than 3,800 centenarians in Italy, researchers found the risk of death slows, and even plateaus, above age 105.

"As we age, our health and risks of death get worse faster and faster. But at extreme ages, they stop getting worse," said co-author Kenneth Wachter, a professor of statistics at the University of California, Berkeley.

"They don't get better, but they stop getting worse. They level out -- it's called a plateau," he told AFP.

Researchers studied data on all inhabitants of Italy aged 105 and older between 2009 and 2015, those born between 1896 and 1910, for a total of 3,836 documented cases, said the study.

Focusing on mortality among people born in the same years, over time they found slight declines in mortality rate. This suggests as time went on, people were living a bit longer than those born in prior years.

"The slow but distinct improvements over time that we see in the level of the plateau beyond age 105 give hope that a fixed limit to lifespan is not currently in view," explained Wachter.

Socioeconomic factors and improved medical care could be factors in the lengthening human lifespan.

BRITISH INTERNATIONAL SCHOOL, PHUKET

But "similar mortality plateau patterns in extreme age are observed in other species, hinting at common structural and evolutionary explanations," said the report.

If the research is confirmed by other studies, that could mean the limit of the human lifespan has yet to be reached.

Life expectancy globally has risen almost continuously since the 19th century, but has leveled off in recent decades. Babies born in the United States today, for example, can expect to live to nearly 79 compared to 47 for Americans born in 1900.

But people who live to extreme old age are rare. Since Calmant's death, the general trend for the oldest person in the world has been to reach about 115 years old.

Wachter said the findings do not point to a new potential lifespan limit.

"Our findings do not say anything about ages beyond about 113," he told AFP.

"But they do provide some hope that increased understanding of interactions between genetic variants and medical and behavioral factors may contribute to better health and survival for people in their 80s and 90s, 10 or 15 years from now.


AFP

 

 

Comment on this story

* Please login to comment. If you do not have an account please register below by simply entering a username, password and email address. You can still leave your comment below at the same time.

Comments Here:
Comments Left:
# Characters
Username:
Password:
E-mail:
Security:

Be the first to comment.

Have a news tip-off? Click here

 

Phuket community
Over 1,000 arrested in Phuket ‘Operation X-Ray Outlaw Foreigner’ clampdown

I think Phuket would be a better, safer place if the government applied as many resources to crack d...(Read More)


Fishing the exotic

Dragging an animal around via a steel hook in its mouth, until it dies, or is put thru huge distress...(Read More)


VIDEO: An Inside Look at the Phuket Vegetarian Festival

"Unfortunately there are some that still don't have a clue," true, and it's you....(Read More)


Phuket Vegetarian Festival takes to the streets

"Well you did actually, that's because you have no idea of what the piercing signifies,&quo...(Read More)


Chinese tourist volume continues dip, but FITs rise

Devaluate the Baht and clean up the tourist destinations and western tourists will come back....(Read More)


Phuket rubbish collector killed in road accident

"still doesn't make any sense" and therefore lies the problem, you just don't, can...(Read More)


One dead in ‘Phoenix’ salvage operation

"There is no need for idiots on here to surmise what occured," and you keep commenting... ...(Read More)


Chinese tourist volume continues dip, but FITs rise

In China people are waiting for 'salvage' of the Phoenix. By now, just 3.5 months talk abo...(Read More)


 

Melbourne Cup 2018