Cited by 2,351Circadian rhythm and melatoninSleep and Work-Related FatigueDietary Effects on Health

Adverse metabolic and cardiovascular consequences of circadian misalignment

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Scheer, Frank A. J. L., Hilton, Michael F., Mantzoros, Christos S., Shea, Steven A.·2009·Proceedings of the National Academy of Sciences

Abstract

There is considerable epidemiological evidence that shift work is associated with increased risk for obesity, diabetes, and cardiovascular disease, perhaps the result of physiologic maladaptation to chronically sleeping and eating at abnormal circadian times. To begin to understand underlying mechanisms, we determined the effects of such misalignment between behavioral cycles (fasting/feeding and sleep/wake cycles) and endogenous circadian cycles on metabolic, autonomic, and endocrine predictors of obesity, diabetes, and cardiovascular risk. Ten adults (5 female) underwent a 10-day laboratory protocol, wherein subjects ate and slept at all phases of the circadian cycle-achieved by scheduling a recurring 28-h "day." Subjects ate 4 isocaloric meals each 28-h "day." For 8 days, plasma leptin, insulin, glucose, and cortisol were measured hourly, urinary catecholamines 2 hourly (totaling approximately 1,000 assays/subject), and blood pressure, heart rate, cardiac vagal modulation, oxygen consumption, respiratory exchange ratio, and polysomnographic sleep daily. Core body temperature was recorded continuously for 10 days to assess circadian phase. Circadian misalignment, when subjects ate and slept approximately 12 h out of phase from their habitual times, systematically decreased leptin (-17%, P < 0.001), increased glucose (+6%, P < 0.001) despite increased insulin (+22%, P = 0.006), completely reversed the daily cortisol rhythm (P < 0.001), increased mean arterial pressure (+3%, P = 0.001), and reduced sleep efficiency (-20%, P < 0.002). Notably, circadian misalignment caused 3 of 8 subjects (with sufficient available data) to exhibit postprandial glucose responses in the range typical of a prediabetic state. These findings demonstrate the adverse cardiometabolic implications of circadian misalignment, as occurs acutely with jet lag and chronically with shift work.

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Crossref · 10.1073/pnas.0808180106

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Authors
Scheer, F. A. J. L., Hilton, M. F., Mantzoros, C. S., & Shea, S. A.
Affiliations
  • Brigham and Women's Hospital (US)
  • Beth Israel Deaconess Medical Center (US)
Venue
Proceedings of the National Academy of Sciences
Published
2009-03-17
Volume
106
Issue
11
Pages
4453-4458
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W2091912666
Cited by
2,351
References
52
Citations by year
2026: 180 · 2025: 148 · 2024: 129 · 2023: 152 · 2022: 162 · 2021: 166 · 2020: 185 · 2019: 151 · 2018: 138 · 2017: 142 · 2016: 134 · 2015: 144 · 2014: 135 · 2013: 113 · 2012: 107
FWCI
40.08
Type
journal article
Language
en
Open access
Locations
  • Proceedings of the National Academy of Sciences (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Brigham and Women's Hospital
  • U.S. Public Health Service (NIDDK R01-57875)
  • National Heart, Lung, and Blood Institute (K24-HL76446, K24HL076446, R01HL076409, R01HL064815, R01 HL64815)
  • National Institute of Diabetes and Digestive and Kidney Diseases
  • National Center for Complementary and Alternative Medicine
  • National Center for Research Resources (M01RR002635, MO1 RR 02635)
  • National Center for Complementary and Integrative Health (R21AT002713)
Topics
  • Life Sciences › Neuroscience › Endocrine and Autonomic Systems › Circadian rhythm and melatonin
  • Social Sciences › Psychology › Experimental and Cognitive Psychology › Sleep and Work-Related Fatigue
  • Health Sciences › Medicine › Physiology › Dietary Effects on Health
Keywords
circadian misalignment, shift work, jet lag, obesity, diabetes mellitus, cardiovascular risk, leptin, insulin, cortisol rhythm, postprandial blood glucose, catecholamines, sleep efficiency, blood pressure, cardiac vagal modulation, core body temperature, cardiometabolic risk
MeSH terms
Adult, Cardiovascular Diseases, Circadian Rhythm, Eating, Fasting, Female, Humans, Male, Metabolic Diseases, Prediabetic State, Sleep, Wakefulness, Postprandial Period, Chronobiology Disorders

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