Associations between sleep variability and cardiometabolic health: A systematic review

Bingqian Zhu, Yueying Wang, Jinjin Yuan, Yunping Mu, Pei Chen, Manassawee Srimoragot, Yan Li, Chang G. Park, Sirimon Reutrakul

Research output: Journal article publicationReview articleAcademic researchpeer-review

15 Citations (Scopus)


This review explored the associations between sleep variability and cardiometabolic health. It was performed following PRISMA guidelines. We identified 63 studies. Forty-one studies examined the association between sleep variability and body composition, with 29 examined body mass index (BMI). Thirteen studies used social jet lag (SJL), n = 30,519, with nine reporting a null association. Eight studies used variability in sleep duration (n = 33,029), with five reporting a correlation with BMI. Fourteen studies (n = 133,403) focused on overweight/obesity; significant associations with sleep variability were found in 11 (n = 120,168). Sleep variability was associated with weight gain (seven studies; n = 79,522). Twenty-three studies examined glucose outcomes. The association with hemoglobin A1c (16 studies, n = 11,755) differed depending on populations, while associations with diabetes or glucose were mixed, and none were seen with insulin resistance (five studies; n = 6416). Sixteen studies examined cardiovascular-related outcomes, with inconsistent results. Overall significant associations were found in five studies focusing on metabolic syndrome (n = 7413). In summary, sleep variability was likely associated with obesity, weight gain, and metabolic syndrome. It might be associated with hemoglobin A1c in people with type 1 diabetes. The associations with other outcomes were mixed. This review highlighted the possible association between sleep variability and cardiometabolic health.

Original languageEnglish
Article number101688
JournalSleep Medicine Reviews
Publication statusPublished - Dec 2022


  • Diabetes
  • Hypertension
  • Obesity
  • Sleep regularity
  • Social jetlag
  • Systematic review

ASJC Scopus subject areas

  • Pulmonary and Respiratory Medicine
  • Neurology
  • Clinical Neurology
  • Physiology (medical)


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