Hope for hopeless skinny people
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Shortage of sleep is linked to obesity
By Roger Highfield, Science Editor
(Filed: 07/12/2004)
The less you sleep the more your waist will expand, say scientists who have linked the insomniac lifestyle of western society to the epidemic of obesity.
Lack of sleep boosts levels of a hormone that triggers appetite and lowers levels of a hormone that tells your body it is full, according to the team. The scientists will now study whether obese people should sleep more to lose weight.
The study, by Prof Emmanuel Mignot of Stanford University, Dr Shahrad Taheri of the University of Bristol and colleagues, is published today in the Public Library of Science.
"Our results demonstrate an important relationship between sleep and metabolic hormones," the team reports. "In western societies, where chronic sleep restriction is common and food is widely available, changes in appetite regulatory hormones with sleep curtailment may contribute to obesity."
Dr Taheri said the team believed that sleeplessness contributed to being overweight, and not the other way round.
As for the concern about children, obesity and television viewing, he pointed out that watching television was often done at a time when children should be sleeping.
While altering sleep duration was not going to be the complete answer to the obesity pandemic, it may be an easy way to fight it.
A study presented last month at a meeting of the North American Association for the Study of Obesity, found that people who sleep two to four hours a night were 73 per cent more likely to be obese than normal sleepers. Researchers believe that sleep loss impacts on several hormones related to appetite and food intake, and two such hormones - ghrelin and leptin - are thought to play a role in the interaction between short sleep duration and obesity.
Ghrelin, which was discovered five years ago and is primarily produced by the stomach, triggers appetite so that the more ghrelin you have, the more you want to eat.
Leptin, a hormone produced by fat cells, is a signal indicating insufficient metabolic reserve and the need to eat more calories.
The researchers from Stanford and Bristol examined the sleep patterns of 1,024 volunteers.
The data showed a 14.9 per cent increase in ghrelin and a 15.5 per cent decrease in leptin in people who consistently slept for five hours compared with those who slept for eight.
Prof Mignot said the results were consistent regardless of gender, size, eating and exercise habits. "The effect must be very strong to appear in [this entire] population," he said. "It was quite amazing that a hormone can track a person's self-reported amount of sleep so well," he added.
The researchers also found that in people sleeping less than eight hours (74.4 per cent of the sample), increased body mass index was proportional to decreased sleep.
They reported that a 3.6 per cent increase in the index corresponded to an average nightly sleep duration decrease from eight hours to five hours. "Good sleep, healthy eating habits, and regular exercise each may have important roles in fighting obesity in modern society," said Prof Mignot. -
Then Why Is Your Topic " Hope For Hopeless Skinny People " ? Are You Asking Skinny People To Sleep As Little As Possible To Gain Weight?
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Wow, that means I'm getting really good sleep.
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bee n doing that the last 2 months and gained wieght. Didnt want to mislead people before i try out. It really works. I felt more hungry and think the body take in more nuritentsOriginally posted by NemY:Then Why Is Your Topic " Hope For Hopeless Skinny People " ? Are You Asking Skinny People To Sleep As Little As Possible To Gain Weight? -
I would hazard a guess that being obese is not very healthy?
You could be bulking up by not sleeping as much, but the bulk you gain is not the one you should want, most probably fat instead of lean muscle mass, it is always best to just exercise. Go exercise, you can gain more lean muscle mass, and get rid of flab. Wanna find easy way out like Andrea de Cruz, lose a kidney or wat..now wanna grow bulkier by not sleeping and then die of hypertension..pointless.. -
Same Here, I Have A Habit Of Sleeping Very Little, Cos I Dont Like SLeeping, And I Feel Very Hungry In The Night. Ended Up Eating Prata Downstairs.Originally posted by Alfresco coffeeshop:bee n doing that the last 2 months and gained wieght. Didnt want to mislead people before i try out. It really works. I felt more hungry and think the body take in more nuritents -
SAF people should read this.
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maybe its right, i uually sleep around 3am and wake up in the afternoon....does that count???
and i eat a crap lot, but i nt fat lehz. -
No wonder i so small... I sleep almost 10 hours a day...
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People tend to eat more when they're deprived of sleep.
I've also experienced it before. -
that study 1year old edi. Still valid meh?
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i eat a lot, i sleep abt 10hrs since it's the sch hols. den i work out by exercising by cycling >30km. i'm thin! an 18-year-old at 1.76m and 55kg.
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pft~
no wonder im fat........ -
Hmmmm, I know about it, but it doesn't work with me. Else I could be a female sumo wrestler.
But my metabolism is so weird, that I could spoil the results of any research.
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no no...Originally posted by FireIce:pft~
no wonder im fat........
you are fat cos middle-aged women grow fat easily... -
yah yah yahOriginally posted by matrixeg:no no...
you are fat cos middle-aged women grow fat easily...
i need X X X -
Its true that at night i'm very very hungry. Specially past midnight, when dinner has long digested.
But hey, what i was thinking was, during these hours we're hungry, i suppose it sort of replace the breakfast we'll be skipping. Because we're sleeping late, you'll wake up probably around 12pm(or even later). As a result, you already skipped your breakfast.
And, I did eat alot, but still didn't gain any weight. I'm quite a big eater, but after all these years, i still don't gain any weight. -
the research have some truth behind it. I tried t for 2 months. and checked my weight, I gained a few more kilos. and parts of my body gorew fatter. THis is just 2 months.