Wednesday, March 22, 2006

Update on the Relationship between Sleep and Metabolism

The Relationship between Sleep and Metabolism

Karine Spiegel, PhD, and colleagues published an article in the December 7, 2004 issue of the Annuals of Internal Medicine that suggests that sleep restriction can lead to weight gain. They found that sleep restriction (4 hrs /night) leads to decreased levels of the hormone Leptin and increased levels of Ghrelin, another hormone. The alteration of the levels of these appetite and energy regulating hormones was associated with increased hunger and appetite in the study. This study adds to the evidence linking insufficient sleep to obesity.

More recently, Dr. Henry Klar Yaggi and colleagues reported on a 15-year study that examined the association between sleep duration and the risk of developing type 2 diabetes mellitus. The prospective observational Massachusetts Male Aging Study found that men reporting short sleep duration (6 or less hours per night) and men reporting long sleep duration (more than 8 hours per night) were at significantly increased risk for developing diabetes compared to those getting 7-8 hours of sleep.

Insufficient nocturnal sleep can be caused by either a sleep disorder or voluntary sleep deprivation. Excessive sleep is usually caused by an underlying sleep disorder. Abnormal nocturnal sleep durations have been linked with obesity, impaired glucose tolerance, and diabetes mellitus.

It is important for physicians to counsel their overweight and obese patients to allow for 8 hours of sleep per night. Since obstructive sleep apnea is both a cause and consequence of obesity, practitioners should screen their obese patients for this common disorder. Useful symptoms to ask about include snoring, prolonged sleep duration, frequent nocturnal awakenings, and excessive daytime sleepiness.

5 comments:

: Joseph j7uy5 said...

That is really interesting. It may give a little extra motivation to people who have trouble finding the motivation to adjust their sleep habits.

Anonymous said...

There is a concept that people who sleep a lot run the risk of gaining weight. Well, this is not false, but then people who do not sleep well also run the risk of gaining weight! Appropriate amount of sleeping is very necessary to keep from getting obese. Even children, who do not sleep well, might run the risk of getting obese. However, in the modern times there are a plenty of ways that can help a person to lose weight, for example the weight loss pills. http://www.phentermine-effects.com

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thuốc tốt said...

Mất ngủ là bệnh phổ biến hiện nay và bất cứ ai cũng có thể mắc phải và những bà bầu cũng không thoát khỏi cảnh bị bệnh mất ngủ . mất ngủ có ảnh hưởng đến thai nhi không là câu hỏi được nhiều người hỏi. Vậy nguyên nhân mất ngủ khi mang thaihay buồn ngủ là bệnh gì. Vậy có cách chữa bệnh mất ngủ hiệu quả nhất , cách trị chứng mất ngủ hiệu quả và an toàn nhất . Cùng đi tìm hiểu nhé.