A new study says that older research that caps age limits at around 115
years old is outdated. Researchers at McGill University in Montreal
found no evidence that maximum lifespan has stopped increasing.
That conclusion, published in the journal Nature,
is based on the analysis of annual lifespan data reaching back to 1968.
The focus was on the longest-living people — called super-centenarians
(people who reach the age of 110) — in the U.S., the UK, France and
Japan.
“We just don’t know what the age limit might be. In fact, by extending
trend lines, we can show that maximum and average lifespans, could
continue to increase far into the foreseeable future,” said the study’s coauthor Siegfried Hekimi.
Longevity changes with time. In 1920, the average U.S. life expectancy
was 54 years. The estimate jumped to 75 years in 1990. Maximum lifespan
seems to follow the same increasing trend.
Hekimi said that it’s impossible to predict what future lifespans in
humans might look like, considering advances in technology, medicine and
living conditions.
But before you start hoarding too many birthday candles, a study released in October
by scientists at the Albert Einstein College of Medicine said it may
not be possible to extend life beyond the ages that have already been
recorded, with 115 years likely to be humans’ maximum average lifespan.
These researchers found that in any given year, the odds that at least
one person in the world will live past their 125th birthday, are less
than 1 in 10,000. Some have come close though: Emma Morano, of Italy,
passed away last April at age 117. And Frenchwoman Jeanne Calment lived
for 122 years and 168 days until she died in 1997.
“It’s hard to guess,” Hekimi said. “Three hundred years ago, many people
lived only short lives. If we would have told them that one day most
humans might live up to 100, they would have said we were crazy.”
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