CRP (C-reactive protein) is an inflammatory marker that can be influenced by sleep quality. Studies show that chronic poor or short sleep (under 6 hours) is associated with elevated CRP levels. This is likely due to activation of the immune system and dysregulation of inflammatory mediators. Conversely, existing inflammation can disrupt sleep, creating a vicious cycle. Therefore, when CRP is elevated, consider not only infections or chronic diseases but also your sleep hygiene: regular sleep schedule, adequate duration (7–9 hours), avoiding screens before bed, and stress reduction. However, CRP alone is not a specific marker for sleep issues; it should be interpreted in the overall clinical context. If CRP remains high or sleep problems persist, consult a physician. The evidence for the CRP-sleep link is human-strong, based on epidemiological and experimental studies.
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