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Social jet lag is associated with worse mood, poorer health and heart disease

June 05, 2017

Preliminary results of a new study show that social jet lag has emerged as an important circadian marker for health outcomes.

Results show that social jet lag, which occurs when you go to bed and wake up later on weekends than during the week, is associated with poorer health, worse mood, and increased sleepiness and fatigue. Each hour of social jet lag also is associated with an 11-percent increase in the likelihood of heart disease. These effects are independent of sleep duration and insomnia symptoms, which are related to both social jet lag and health.

"These results indicate that sleep regularity, beyond sleep duration alone, plays a significant role in our health," said lead author Sierra B. Forbush, an undergraduate research assistant in the Sleep and Health Research Program at the University of Arizona in Tucson. "This suggests that a regular sleep schedule may be an effective, relatively simple, and inexpensive preventative treatment for heart disease as well as many other health problems."

The research team was led by senior author Michael A. Grandner, PhD, MTR, director of the Sleep and Health Research Program. They utilized data from the community-based Sleep and Healthy Activity, Diet, Environment, and Socialization (SHADES) study, analyzing survey responses from 984 adults between the ages of 22 and 60 years.

Social jet lag was assessed using the Sleep Timing Questionnaire and was calculated by subtracting weekday from weekend sleep midpoint. Overall health was self-reported using a standardized scale, and survey questions also assessed sleep duration, insomnia, cardiovascular disease, fatigue, and sleepiness.

The American Academy of Sleep Medicine recommends that adults should sleep 7 or more hours per night on a regular basis to promote optimal health. In addition to adequate duration, healthy sleep requires good quality, appropriate timing and regularity.

The research abstract was published recently in an online supplement of the journal Sleep and will be presented Monday, June 5, in Boston at SLEEP 2017, the 31st Annual Meeting of the Associated Professional Sleep Societies LLC (APSS), which is a joint venture of the American Academy of Sleep Medicine and the Sleep Research Society.
-end-
Grandner is supported by the National Heart, Lung and Blood Institute (K23HL110216), and the SHADES study was supported by the National Institute of Environmental Health Sciences (R21ES022931).

Abstract Title: Sociodemographics, Poor Overall Health, Cardiovascular Disease, Depression, Fatigue, and Daytime Sleepiness Associated with Social Jetlag Independent of Sleep Duration and Insomnia
Abstract ID:
1067
Presentation Date:
Monday, June 5
Poster Presentation:
5 p.m. to 7 p.m., board 207

For a copy of the abstract or to arrange an interview with the study author or an AASM spokesperson, please contact AASM Communications Coordinator Corinne Lederhouse at 630-737-9700, ext. 9366, or clederhouse@aasmnet.org.

About the American Academy of Sleep Medicine

Established in 1975, the American Academy of Sleep Medicine (AASM) improves sleep health and promotes high quality, patient-centered care through advocacy, education, strategic research, and practice standards. The AASM has a combined membership of 10,000 accredited member sleep centers and individual members, including physicians, scientists and other health care professionals. For more information about sleep and sleep disorders, including a directory of AASM-accredited member sleep centers, visit http://www.sleepeducation.org.

American Academy of Sleep Medicine

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