Featured Research

from universities, journals, and other organizations

Shorter sleep durations may increase genetic risks for obesity

Date:
June 17, 2011
Source:
American Academy of Sleep Medicine
Summary:
A recent study found that the heritability of self-reported, habitual sleep duration was 32 percent, and shared environmental influences on sleep duration were negligible. Longer sleep duration was associated with decreased body mass index. Behavioral genetic modeling found that the heritability of self-reported BMI when sleep duration equaled seven hours was more than twice as large as the heritability of BMI when sleep duration equaled nine hours. The study involved 1,811 pairs of identical and fraternal twins.

Sleeping less at night may increase the expression of genetic risks for obesity, while getting plenty of sleep may suppress genetic influences on body weight, suggests an abstract being presented in Minneapolis, Minn., at SLEEP 2011, the 25th Anniversary Meeting of the Associated Professional Sleep Societies LLC (APSS).

Related Articles


Results of a study of 1,811 pairs of twins show that the heritability of sleep duration was 32 percent, and shared environmental influences on sleep duration were negligible. Longer sleep duration was associated with decreased body mass index, which is a measure of body fat based on height and weight.

Behavioral genetic modeling found significant interactions between self-reported, habitual sleep duration and both genetic and shared environmental influences on BMI. The heritability of BMI when sleep duration equaled seven hours was more than twice as large as the heritability of BMI when sleep duration equaled nine hours.

"The heritability of body weight decreased as sleep duration increased," said principal investigator Dr. Nathaniel Watson, associate professor of neurology at the University of Washington and co-director of the UW Medicine Sleep Center. "There appears to be something about short sleep that creates a permissive environment for expression of obesity-related genes."

The study involved a population-based sample of 1,811 pairs of identical and fraternal twins from the University of Washington Twin Registry. They had a mean age of about 37 years. Height, weight and habitual sleep duration were collected by self-report surveys. Participants were slightly overweight with a mean BMI of 25.4, and they had a mean sleep duration of about seven hours and 11 minutes per night. Data were analyzed using behavioral genetic interaction models.

According to Watson, the study is an important addition to the existing body of research on the relationship between sleep duration and BMI.

"Epidemiological and experimental studies have shown short sleep is associated with obesity," said Watson. "Our work takes this a step further, showing that short sleep facilitates expression of obesity-related genes."

The authors concluded that future research aiming to identify specific genotypes for BMI may benefit from considering the moderating role of sleep duration.

In a smaller study of 612 twin pairs published in the Journal of Clinical Sleep Medicine in 2010, Watson found that short sleep was associated with elevated BMI following careful adjustment for genetics and shared environment. In a study published in JAMA in 2010, the CDC estimated that 68 percent of U.S. adults were overweight or obese in 2007 -- 2008.


Story Source:

The above story is based on materials provided by American Academy of Sleep Medicine. Note: Materials may be edited for content and length.


Cite This Page:

American Academy of Sleep Medicine. "Shorter sleep durations may increase genetic risks for obesity." ScienceDaily. ScienceDaily, 17 June 2011. <www.sciencedaily.com/releases/2011/06/110615020230.htm>.
American Academy of Sleep Medicine. (2011, June 17). Shorter sleep durations may increase genetic risks for obesity. ScienceDaily. Retrieved November 28, 2014 from www.sciencedaily.com/releases/2011/06/110615020230.htm
American Academy of Sleep Medicine. "Shorter sleep durations may increase genetic risks for obesity." ScienceDaily. www.sciencedaily.com/releases/2011/06/110615020230.htm (accessed November 28, 2014).

Share This


More From ScienceDaily



More Health & Medicine News

Friday, November 28, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Ebola Leaves Orphans Alone in Sierra Leone

Ebola Leaves Orphans Alone in Sierra Leone

AFP (Nov. 27, 2014) — The Ebola epidemic sweeping Sierra Leone is having a profound effect on the country's children, many of whom have been left without any family members to support them. Duration: 01:02 Video provided by AFP
Powered by NewsLook.com
Experimental Ebola Vaccine Shows Promise In Human Trial

Experimental Ebola Vaccine Shows Promise In Human Trial

Newsy (Nov. 27, 2014) — A recent test of a prototype Ebola vaccine generated an immune response to the disease in subjects. Video provided by Newsy
Powered by NewsLook.com
Pet Dogs to Be Used in Anti-Ageing Trial

Pet Dogs to Be Used in Anti-Ageing Trial

Reuters - Innovations Video Online (Nov. 26, 2014) — Researchers in the United States are preparing to discover whether a drug commonly used in human organ transplants can extend the lifespan and health quality of pet dogs. Video provided by Reuters
Powered by NewsLook.com
Today's Prostheses Are More Capable Than Ever

Today's Prostheses Are More Capable Than Ever

Newsy (Nov. 26, 2014) — Advances in prosthetics are making replacement body parts stronger and more lifelike than they’ve ever been. Video provided by Newsy
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
 
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:  

Breaking News:

Strange & Offbeat Stories

 

Health & Medicine

Mind & Brain

Living & Well

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:  

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile iPhone Android Web
Follow Facebook Twitter Google+
Subscribe RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins