美国研究人员发现，睡眠不足不仅令人身体疲惫，还容易发胖。志愿者每天只睡5小时，连续5天后体重增加近一公斤。

U.S. researchers found,Lack of sleep is not only the body tired,Also easy to get fat.Volunteers only sleep 5 hours a day,Weight increased by nearly a kilogram for five days.

睡眠少 Sleep less

　　科罗拉多大学博尔德分校的肯·怀特教授带领研究小组征募16名年轻、身材苗条、身体健康的成年人为志愿者，让他们在科罗拉多大学医院的“睡房”内生活两星期。

At the university of Colorado at boulder Ken recruit 16 young professor white led the research team/slim/Body healthy adult volunteers,Let them in the university of Colorado hospital"Sleep the room"Within two weeks of life.

　　前三天，研究人员让志愿者每晚睡9小时，白天向他们供给仅够保持体重的热量。

The first three days,The researchers asked volunteers to sleep nine hours every night,Supply to them during the day only enough calories to maintain their weight.

　　随后5天，研究人员把志愿者分成两组，第一组每晚睡5小时，第二组保持9小时睡眠。所有志愿者可以随意进食，有大量肉类和水果、酸奶、冰激凌、薯片等多种零食供应。

Five days later,The researchers divided the volunteers into two groups,The first group of 5 hours sleep every night,A second group of nine hours of sleep.All volunteers are free to eat,There is a lot of meat and fruit/yogurt/The ice cream/Potato chips, etc. Supply many kinds of snacks.

　　之后，两组志愿者睡眠时间对换，第一组每晚睡9小时，第二组最多睡5小时。

after,Two groups of volunteers exchange sleep time,The first set of sleep nine hours every night,A second group of sleep 5 hours at most.

　摄入多 Eat more

　　研究人员在由美国《国家科学院学报》发表的报告中写道，清醒时间长意味着人体需要消耗更多能量，但睡眠少的志愿者所摄入热量超过消耗量。

Researchers in the United States[Proceedings of the national academy of sciences]Published in the report,Awake long time means that the body needs to consume more energy,But sleep less of volunteers over consumption.

　　实验结果显示，与睡眠时间为9小时的志愿者相比，晚上只睡5小时的志愿者一天多消耗5%的热量，但摄入热量多6%。

The results show,Compared with sleep for nine hours of volunteer,Night only sleep 5 hours volunteers consume 5% more calories a day,But 6% more calories.

　　睡眠不足的志愿者往往早餐吃得少，晚饭后猛吃零食，而零食通常富含糖分和脂肪，热量较高。结果，他们所吃零食的热量超过一日三餐中任何一餐。

Sleep-deprived volunteers tend to eat a small breakfast,Fierce eat snacks after dinner,And snacks are usually high in sugar and fat,High heat.As a result,They have snack calories more than any of the three meals a day meal.

　　连续睡眠不足5天后，志愿者平均增重两磅（0.91公斤），等到睡眠时间充足，志愿者摄入的脂肪和碳水化合物减少，体重随之减少。

Continuous lack of sleep for five days,Volunteers weigh two pounds on average(0.91 kg),Wait for sleep time is enough,Volunteers intake of fat and carbohydrate to reduce,Weight less.

宜重视 Appropriate attention

　　英国《每日邮报》11日援引怀特的话报道：“我们的研究显示，当人们缺觉时，夜间喜欢进食，而从生理角度而言，这一时间段并不适合进食。”

The UK[The daily mail]11 reports quoted white words:"Our research shows,When people sleep,Like to eat at night,And from the physiological point of view,This is not for eating."

　　怀特说，他们的研究结果显示，充足睡眠有助人们保持健康体重，因此人们想瘦身或保持体重时，应当重视健康睡眠。“我不认为仅仅多睡觉就会令体重减少。体重增加和肥胖问题相当复杂，但睡眠充足对瘦身或保持体重有一定作用。”

White said,Their research shows,Get enough sleep can help people maintain a healthy weight,So when people want to thin body or maintain their weight,Health should be paid great attention to sleep."I don't think more sleep alone can make weight loss.Weight gain and obesity is quite complicated,But sleep is enough to keep weight or weight have some effect."

　　先前多项研究显示，睡眠不足有损健康。睡眠受干扰影响压力水平以及清醒时的饥饿激素分泌；缺觉显著减缓人体新陈代谢，减少热量消耗；睡眠时间不足5小时的人容易发胖，也容易罹患Ⅱ型糖尿病等与体重相关的疾病。

Previous studies show,Lack of sleep health.Sleep disturbance affect stress levels and waking hunger hormone secretion;Sleep deprivation significantly slow metabolism,Reduce energy consumption;Less than 5 hours of sleep time people tend to get fat,Also prone Ⅱ weight-related diseases such as diabetes.

　　黄敏（新华社供本报特稿）

huang(Xinhua news agency for this feature)