Research
Mixed
Short and long sleep durations are associated with elevated levels of proinflammatory biomarkers (TNF-α, IL-6, CRP), which may mediate the increased risk of cardiovascular disease.
Maintaining 7-8 hours of sleep helps regulate inflammatory markers like IL-6 and CRP. While you cannot feel inflammation, chronic elevation contributes to heart disease risk. Consistent, adequate sleep is a key strategy for managing systemic inflammation.
ModerateSupportsMEDIUM confidence
One potential pathway linking sleep duration and cardiometabolic health is via systemic inflammation. Although inflammation can be difficult to reliably measure and may be confounded by a number of other influences, it remains as one of the most promising mechanistic links between sleep and cardiometabolic health.
Why this rating
Evidence is mixed for some biomarkers (e.g., TNF-α) and shows consistent associations for others (e.g., IL-6, CRP) but often from observational or small experimental studies.
Source
Sleep duration, cardiovascular disease, and proinflammatory biomarkers
Michael A. Grandner et al. · Nature and Science of Sleep · 2013
DOI 10.2147/nss.s31063
narrative_reviewCited 239×
Read the paper DOI resolved against Crossref · corpus check 2026-06-10
Related findings · Mixed
- Bariatric surgery (VSG and RYGB) is the most effective and sustainable treatment for obesity, producing marked and sustained weight loss that non-surgical interventions cannot match.Strong
- Severely protein-deficient diets (2–3% energy) induce lean body mass loss and metabolic imbalance, whereas adequate protein intake (0.66 g/kg/d minimum) is a prerequisite for maintaining muscle, bone, and physiological function.Strong
- For patients with Class III obesity (BMI >39.9 kg/m2), metabolic bariatric surgery (MBS) is significantly more effective than any currently approved medication, with BilioPancreatic Diversion (BPD) showing the highest estimated weight loss.Strong
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 →