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Circadian rhythm
DEZirkadianer Rhythmus
Your circadian rhythm is the body's roughly 24-hour internal clock. It coordinates when you sleep and wake, when hormones release, and your body temperature and metabolism. It is run by the suprachiasmatic nucleus, a tiny clock in your hypothalamus, and set mainly by light. Keeping it steady supports your heart, metabolism, immune system, and thinking. Chronic disruption does the opposite. It is linked to obesity, type 2 diabetes, and faster biological aging.
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Sources
- Konopka RJ, Benzer S. (1971). Clock Mutants of Drosophila melanogaster. Proceedings of the National Academy of Sciences USAdoi:10.1073/pnas.68.9.2112
- Fagiani F, Di Marino D, Romagnoli A, Travelli C, Voltan D, Di Cesare Mannelli L, Racchi M, Govoni S, Lanni C. (2022). Molecular regulations of circadian rhythm and implications for physiology and diseases. Signal Transduction and Targeted Therapydoi:10.1038/s41392-022-00899-y
Related studies from the research library
- A Bright Lamp Before 10 A.M. Linked to More Active Days in Older AdultsEvidence: Moderate
- Your Smartwatch May Predict Disease Risk by Tracking Your Body ClockEvidence: Moderate
- Strong Daily Rhythms Plus Exercise Cut Death Risk by Two-ThirdsEvidence: Moderate