Restricting Calories Does Not Necessarily Extend Monkeys’ Lives
2012-09-10 0:00

From: DiscoverMagazine.com

A calorie-restricted diet can extend the lives of organisms from yeast to fruit flies to rodents, as well as improving their health and preventing disease. But just because cutting calories helps animals with short lifespans doesn’t mean that humans will reap similar benefits. So the 2009 discovery that calorie-restricted diets also increase the longevity of already-longer-lived rhesus monkeys was exciting news.

But don’t pull out a calorie calculator quite yet. The latest word on the subject, from a new paper in Nature, suggests that the 2009 study might not tell the whole story: this team found that caloric restriction doesn’t actually grant rhesus monkeys longer lives.

In this new 23-year-long study from the National Institute on Aging (NIA), rhesus monkeys, which have an average lifespan of 27 years in captivity, ate either a nutritious diet as control subjects or the same diet slashed by 30 percent. Some of the monkeys had their calorie intake restricted from a young age, while for others, the restricted diet only set in when they were 16 to 23 years old.

For the old-onset monkeys, a restricted diet improved health but did not increase longevity or influence cause of death. But among the young-onset monkeys, cutting calories significantly improved neither health nor longevity. (Although some of the young-onset rhesus monkeys are still alive, based on estimated probability statistics, there is less than a 0.1 percent chance that the calorie-restricted subjects will significantly outlive the controls.)

[...]


Read the full article at: discovermagazine.com





Related Articles
Ecuadorean Villagers May Hold Secret to Longevity
Fountain of Youth in Bile? Longevity Molecule Identified


Latest News from our Front Page

Scary Times For California Farmers As Snowpack Hits Record Lows
2015-04-02 2:45
The water outlook in drought-racked California just got a lot worse: Snowpack levels across the entire Sierra Nevada are now the lowest in recorded history — just 6 percent of the long-term average. That shatters the previous low record on this date of 25 percent, set in 1977 and again last year. Morning traffic makes its way toward downtown Los Angeles ...
Sharia Policeman in Swedish School
2015-04-02 0:58
Editor's Note: Unfortunately this is not an April Fools story. On monday morning emergency services were called to Eductus in BorĂĄs, a school specialized in teaching Swedish to immigrants, after a Muslim student threatened classmates who did not abide by his strict interpretation of Islam. They were reprimanded for laughing and a Christian woman who refused to wear a veil fainted ...
“Us” and “Them”
2015-04-01 22:30
I’ve decided to translate yet another one of Julia Caesar’s popular Sunday chronicles available in Swedish on the website Snaphanen. This one is named “Us and Them” and concerns a scandal of epic proportions, the Swedish governments “society coach” program. The plan was for the coaches to assist newly arrived immigrants with getting jobs and becoming integrated into society. The ...
The Expulsion and Extermination of Eastern European Germans: An Overview
2015-04-01 17:40
"Since the end of the war about 3,000,000 people, mostly women and children and overaged men, have been killed in eastern Germany and south-eastern Europe; about 15,000,000 people have been deported or had to flee from their homesteads and are on the road. About 25 per cent of these people, over 3,000,000 have died. About 4,000,000 men and women have ...
Your Smartphone Could be Tracking You Every 3 Minutes, Study Says
2015-04-01 2:24
Your apps want to know where you are Smartphone apps regularly collect large amounts of data on users’ locations, sometimes as often as every three minutes, new research suggests. Researchers at Carnegie Mellon University conducted a study where they asked 23 people to use their Android smartphones normally, and tracked location data requests from each device with specially designed software, the Wall ...
More News »