Myths vs facts: hsCRP and Schlaf

The question of myths vs facts regarding hsCRP and sleep is important, as this area is prone to oversimplification. Fact: hsCRP (high-sensitivity C-reactive protein) is a well-established marker of systemic inflammation. Numerous studies have found associations between poor sleep (e.g., short duration <6 hours, fragmentation) and elevated hsCRP levels, likely due to activation of inflammatory pathways via disrupted circadian rhythms and increased sympathetic activity. Myth: hsCRP alone can diagnose a sleep disorder or quantify its severity. hsCRP is non-specific – it rises with infections, smoking, obesity, or stress. Moreover, evidence is mixed: some studies show no significant link after adjusting for confounders like BMI. Another myth: a normal hsCRP rules out sleep-related inflammation. Local inflammation (e.g., in airway tissues in sleep apnea) may not raise systemic hsCRP. Bottom line: hsCRP can be a useful piece of the puzzle but not a standalone sleep biomarker. For better sleep, focus on hygiene and seek medical evaluation for persistent issues – not just a blood test number.