Can HDL help with Schlaf?

Whether HDL (high-density lipoprotein) can improve sleep is not clearly supported by science. HDL is best known for its cardioprotective role – it transports excess cholesterol back to the liver. Some observational studies have found associations between low HDL and sleep disorders such as obstructive sleep apnea or poor sleep quality. However, the direction of causality is unclear: sleep deprivation can lower HDL levels, and low HDL might impair sleep via inflammatory pathways. No randomized controlled trials have shown that deliberately raising HDL (e.g., through medication or supplements) improves sleep. The evidence is therefore moderate at best. For better sleep, established measures like consistent bedtimes, reducing screen time before bed, and stress management are far more evidence-based. An HDL test (e.g., from a home kit) can indicate cardiovascular risk but not directly sleep quality. Anyone experiencing sleep issues should consult a physician rather than focus on HDL levels.