摘要：如果想减肥，最好还是多睡一会儿。美国一项最新研究发现，睡眠不足的人吃得更多，但却不会消耗更多热量，因此容易发胖。
美国圣卢克－罗斯福医院研究人员在《美国临床营养学期刊》上报告说，他们邀请30名体重正常的年轻男女参与试验。在第一次试验中，这些人被安排连续5天每天晚上睡足9小时。在第二次试验中，这些人被安排连续5天每晚只睡4小时。两次试验期间，他们前4天进餐都受到严格控制，但最后一天可以随心所欲地大吃特吃。
结果显示，这些受试者平均每天消耗2600卡路里的热量。当睡眠充足时，他们在最后一天只会吃进相当于2500卡路里热量的食物，但睡眠不足时，他们能吃进去相当于2800卡路里热量的食物。
研究人员指出，睡眠不足除了会引发心脏病和糖尿病，还容易导致肥胖，原因可能包括：睡眠在身体控制饥饿方面会发挥一定作用；睡眠不足会造成人们疲倦，没有精神选择进食比较健康的食物；睡眠不足的人更希望通过吃来满足自己的欲望。他们认为，如果想控制体重，还是最好先保障睡眠。
睡眠不足的人吃得更多，容易发胖
生物探索推荐英文论文摘要：
Short sleep duration increases energy intakes but does not change energy expenditure in normal-weight individuals
Abstract
Background: Evidence suggests a relation between short sleep duration and obesity.
Objective: We assessed energy balance during periods of short and habitual sleep in normal-weight men and women.
Design: Fifteen men and 15 women aged 30–49 y with a body mass index (in kg/m2) of 22–26, who regularly slept 7–9 h/night, were recruited to participate in this crossover inpatient study. All participants were studied under short (4 h/night) and habitual (9 h/night) sleep conditions, in random order, for 5 nights each. Food intake was measured on day 5, and energy expenditure was measured with the doubly labeled water method over each period.
Results: Participants consumed more energy on day 5 during short sleep (2813.6 ± 593.0 kcal) than during habitual sleep (2517.7 ± 593.0 kcal; P = 0.023). This effect was mostly due to an increased consumption of fat (20.7 ± 37.4 g; P = 0.01), notably saturated fat (8.7 ± 20.4 g; P = 0.038), during short sleep. Resting metabolic rate (short sleep: 1455.4 ± 129.0 kcal/d; habitual sleep: 1486.5 ± 129.5 kcal/d; P = 0.136) and total energy expenditure (short sleep: 2589.2 ± 526.5 kcal/d; habitual sleep: 2611.1 ± 529.0 kcal/d; P = 0.832) did not differ significantly between sleep phases.
Conclusions: Our data show that a reduction in sleep increases energy and fat intakes, which may explain the associations observed between sleep and obesity. If sustained, as observed, and not compensated by increased energy expenditure, the dietary intakes of individuals undergoing short sleep predispose to obesity. This trial is registered at clinicaltrials.gov as.
