Dr. Sperry and colleagues reviewed 23 studies of 56,259 adults and reported (August edition of SLEEP) that there indeed exists a significant, inverse relationship between sleep duration and waist circumference. In the United States in 2001, only 38% of adults reported getting eight hour of sleep per night, and, by 2009, that percentage had dropped to 28%. Cross-sectional studies done in various countries, demonstrate a significant negative relation between sleep duration and waist circumference, indicating shorter sleep durations may contribute to central obesity. This $249 C-100 Super CPAP Battery Pack is the sleek, portable, and affordable way to power your CPAP machine no matter where your world takes you! A new study by researchers from the University of California has revealed that retiring late to bed makes teens gain more weight, and the trend elevates risks associated with weight gain among other health issues.

The report was published in the journal Sleep, and it involved 3,300 teens who were studied over a period of time to see how going late to bed at nights impacts on their body mass index (BMI). In a way, this particular study contradicts earlier studies which stated that sleeping more adds to chances of weight gain, but this study tends to suggest that sleeping less per night adds to weight gain. According to the researchers in this current study, they found that 2.1 increase in a teen’s BMI is observed for each hour that a teen spends in going late to bed.
Strange enough, the researchers found that the impacts of exercise routines are not very significant on the link that exists between staying up late and chances of BMI increase, regardless of the time that staying up late could have been the result of watching television or working on the computer.
According to study researcher Lauren Asarvow of the University of California in Berkeley, the results of the study becomes important because bedtimes and total sleep time could be used during sessions of weight management to determine how an adolescent transitions into adulthood.

One of the leading theories as to why staying up late before going to bed impacts weight gain is the fact that people who sleep late or work late into the night tend to eat junk food while still up, causing them to put on weight. Several studies have demonstrated that insufficient sleep is associated with increased risk for poor physical health (including hypertension, metabolic syndrome, type 2 diabetes, and hypercholesterolemia) and mental health (including depressed mood, anxiety, and cognitive deficits).
This study gives us one more reason for us to commit ourselves to getting 7-8 hours of sleep every night.

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