Research

Hormonal

Poor self-reported sleep quality is significantly associated with the presence of metabolic syndrome and its core components (adiposity and insulin resistance) in middle-aged adults.

If you are struggling with metabolic health markers like weight or blood sugar, assess your sleep quality. Poor sleep is linked to higher risk of metabolic syndrome. Use a simple sleep diary or questionnaire to track your sleep. If your sleep quality is poor, prioritize improving it as part of your metabolic health strategy, alongside diet and exercise.

ModerateSupportsMEDIUM confidence
Self-reported global sleep quality is significantly related to the metabolic syndrome and several of its core components.
J. Richard Jennings et al. · SLEEP · 2007

Why this rating

Observational, cross-sectional design with a relatively small, homogeneous (Caucasian, middle-aged) sample; adjusted for confounders but direction of influence cannot be determined.

Source

Self-reported Sleep Quality is Associated With the Metabolic Syndrome

J. Richard Jennings et al. · SLEEP · 2007

DOI 10.1093/sleep/30.2.219

cross_sectional · n=210Cited 346×
Read the paper
DOI resolved against Crossref · corpus check 2026-06-10

This is one finding among thousands. Every one is graded and traced to its source, so you can see what the evidence actually supports. Browse the research →