Loss of sleep and weight loss
I take most ‘new’ studies with a grain of salt, but this one seems interesting enough for me at least to post about. It appears to be nothing new in regards to information, but certainly gives ammunition to the age-old argument of getting a decent nights sleep.
According to a new study published October 5, 2010, in the Annals of Internal Medicine, a lack of sleep can seriously hinder your bodys ability to not only burn fat, but also to hold onto muscle.
The study, performed at the University of Chicago’s General Clinical Resource Center, followed 10 overweight but healthy volunteers aged 35 to 49 with a body mass index ranging from 25 (considered overweight) to 32 (considered obese). Participants were placed on an individualized, balanced diet with calories restricted to 90 percent of what each person needed to maintain his or her weight without exercise.
When dieters in the study got a full night’s sleep, they lost the same amount of weight as when they slept less. The BIG, BIG caveat here is that when dieters got adequate sleep, more than half of the weight they lost was fat.
When they cut back on their sleep, only 1/4 of their weight loss came from fat.
They also felt hungrier! That’s a double-whammy my friend.
When sleep was restricted, dieters produced higher levels of ghrelin, a hormone that triggers hunger and reduces energy expenditure.
“If your goal is to lose fat, skipping sleep is like poking sticks in your bicycle wheels,” said study director Plamen Penev, MD, PhD, assistant professor of medicine at the University of Chicago. “Cutting back on sleep, a behavior that is ubiquitous in modern society, appears to compromise efforts to lose fat through dieting. In our study it reduced fat loss by 55 percent.”
Editor’s Note: What do you think of this study? Comment below.