Want to Lose Weight? Get Some Sleep!
As a chiropractor, I'm very interested in the overall health of my patients. As part of a healthy lifestyle we discuss a nutritious diet, getting enough rest, drinking enough water, and getting regular chiropractic care, of course. And, since body weight can affect the stability and function of the musculoskeletal system, as well as impact its organic structures, I am always interested in new studies about weight issues. So, now, let me ask you this: What could be worse than feeling tired and groggy during the day after not getting enough sleep the night before? Well, craving calories, that's what! A recent study found that normal-weight young men ate a "Big Mac's-worth of extra calories" when they'd gotten four hours of sleep the night before compared to when they slept for eight hours.
Let's face it, as a group, we Americans have been sleeping less and getting fatter over the past few decades. The researchers wrote in the American Journal of Clinical nutrition, "Sleep restriction could be one of the environmental factors that contribute to the obesity epidemic." No experimental studies to date have actually looked at what happens to a normal-weight person's eating patterns when he or she sleeps less.
To read more about this study, go to reuters.com
To investigate, Dr. Laurent Brondel of the European Center for Taste Sciences in Dijon, France, and colleagues looked at sleep, eating, and energy expenditure in 12 healthy young men across two 48-hour sessions.
Two days served as a control period, during which the study participants stuck to their normal routines but kept track of their sleep, eating and activities in a diary. During the second two-day period, the men went to bed at midnight and woke up at 8 a.m. on one day, and on the other day went to bed at 2 a.m. and woke up at 6 a.m. They were allowed to eat as much as they liked.
After the night of short sleep, the researchers found, the men took in 22 percent more calories, on average, than when they were allowed to sleep for eight hours. They ate more at breakfast and dinner, but not at lunch. The average calorie increase was about 560.
It's possible that people might eat more after a short sleep because mammals have evolved to store up calories in the summer, when nights are short and food is plentiful, Brondel and his colleague Dr. Damien Davenne of the University de Caen in Caen, France noted in an email to Reuters health.
The findings make it clear that people need to do their best to get an adequate amount of sleep so their bodies can function properly, Brondel and Davenne add. "It is time to understand that sleep is not just losing time, besides the recovery processes that occur, there are many other functions (energy conservation, memory and so on) which are going on."
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