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On the relationship between sleep, eating and obesity

December 20, 2015

Less sleep, more food and drink?

 

http://www.medicalnewstoday.com/articles/304263.php

 

Written by Yvette Brazier

Published: Sat 19 December 2015 at 12am PST Sat 19 Dec 2015 at 12am PST

 

Sleeping less than 7 hours a night may mean that people are eating and drinking more, contributing to obesity, says research published in the American Journal of Health Promotion.


People who lack sleep are also more likely to eat while doing activities like watching TV.

The association between short sleep and obesity is already known, but the present study focuses on a new aspect of the association between sleep and obesity: whether short sleep is linked to more time spent in secondary eating or drinking.

 

"Secondary eating and drinking" refers to eating or drinking beverages other than water, such as sugar-sweetened beverages, while primarily engaged in another activity, such as watching television.

Dr. Gabriel S. Tajeu, of the University of Alabama, Birmingham's (UAB) Department of Epidemiology, and colleagues studied data from 28,150 American adults, of whom 55.8% were female, aged from 21-65 years, who participated in the American Time Use Survey between 2006-08.

 

Short sleepers engage in secondary eating and drinking

 

The investigators assessed time spent on secondary eating and drinking, as well as primary eating and drinking, with sleep duration as the principal independent variable.

 

They also took into account multiple variables such as race and gender, socioeconomic factors and use of time on weekdays versus weekends, in order to determine the association of short sleep and eating and drinking behaviors. "Normal sleep" was considered to be between 7-8 hours.

Those who reported short sleep also engaged in secondary eating for an additional 8.7 minutes a day, as well as an additional 28.6 minutes daily of secondary drinking on weekdays and 31.28 minutes on weekends.

 

Other links between obesity and lack of sleep focus on breathing problems and hormonal imbalance.

The US National Sleep Foundation describe sleep apnea, a sleep-disordered breathing condition, as part of a vicious circle. Around 18 million Americans, they say, have the condition, which is often associated with being overweight, because as a person gains weight in the trunk and neck area, respiratory function suffers. The result is daytime sleepiness, making it harder to exercise.

 

 

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