Myths vs facts: HDL and sleep

The question about myths vs facts regarding HDL and sleep is not addressed in the provided context. Based on general medical knowledge, sleep deprivation can adversely affect lipid profiles, but specific causal effects on HDL are not firmly established. Some studies suggest short sleep duration (<6h) is associated with lower HDL, while others find no link. A common myth is that 'improving sleep alone will normalize HDL' – in reality, genetics, diet, and exercise are more influential. Another myth: 'HDL is always protective' – recent evidence indicates HDL function (e.g., reverse cholesterol transport) matters more than absolute levels. Since the context lacks relevant sources, this answer is based on general evidence. Caveat: consumer lipid tests provide numerical values for lifestyle insight only; abnormal results require clinical evaluation.