Circadian Rhythm
A circadian rhythm (/sərˈkeɪdiən/), or circadian cycle, is a natural, internal process that regulates the sleep–wake cycle and repeats roughly every 24 hours. It can refer to any process that originates within an organism (is endogenous) and responds to the environment (entrained by the environment).
Cluster Number:
Wiki Number: W042
Diagnosis: Circadian Rhythm Sleep Disorder
US Patients:
World Patients:
Sex Ratio:
Age Onset:
Brain Area: suprachiasmic nucleus
Symptoms: falling asleep in daytime; biological clock misaligned with circadian rhythm.
Progression:
Causes: intrinsic: delayed, advanced, irregular or blindness; extrinsic: shift–work, jet-lag; Alzheimer’s often destroys patterns
Medications: None listed.
Therapies: chronotherapy-delay to normalize; light therapy; hypnotics; melotonin in evening; dark therapy
Youtube Video: Circadian Rhythm Disorders
Amazon or Library Book: Sleep . . . Natural Remedies
Amazon or Library Book:
How to Sleep Well
Click the book to link or order from Amazon.
Click the book to link or order from Amazon.
Support Group: circadiansleepdisorders.org; Email-csd-n@cst-n.org (Circadian Sleep Disorders Network)
4 CURRENT ARTICLES
FROM PUBMED
The world-wide medical research
reports chosen for each diagnosis
Clicking each title opens the
PubMed article’s summary-abstract.
- Association of chronotype and sleep behaviors with mental well-being, eating behaviors, and adiposity traits: a cross-sectional study among a sample of urban Malaysian adultsby Yee-How Say on March 28, 2025
CONCLUSIONS: Although chronotype and sleep behaviors did not differ between sexes, those with a morning chronotype had lower overall, central and visceral adiposity, better well-being and self-control. Those with good sleep behaviors also had better well-being, eating and appetitive behaviors. In conclusion, this study supports the continuous advocacy for a morning-chronotype and good sleep behaviors for better physical and mental health.
- Early stage of metabolic dysfunction associated steatotic liver disease disrupts circadian rhythm and induces neuroinflammation in ratsby Paul-Henri Graindorge on March 28, 2025
Metabolic Dysfunction-Associated Steatotic Liver Disease (MASLD) is a chronic liver disease affecting 25% of the European population, with rising global incidence. Liver damage includes ballooning, steatosis, inflammation and fibrosis. Associated brain disorders include sleep, cognitive issues, anxiety, and depression. While neurological complications in advanced MASLD are well documented, early cerebral manifestations remain largely unexplored. This study aimed at developing an MASLD rat model...
- An Exploratory Genomic and Transcriptomic Analysis Between Choloepus didactylus and Homo sapiensby Ariella Baran on March 28, 2025
Background/Objectives: Sloths, a group of xenarthran mammals currently comprising six recognized distinct species, have been the focus of much physiological animal research due to their extremely slow metabolisms, deliberate movements, and their status as a species relatively unchanged for over 26 million years. However, despite all the effort aimed at understanding these unique characteristics, the sloth genome remains largely unexplored. Due to the link between genetics and observed traits,...
- Rethinking Osteoarthritis Management: Synergistic Effects of Chronoexercise, Circadian Rhythm, and Chondroprotective Agentsby Eloy Del Río on March 28, 2025
Osteoarthritis (OA) is a chronic and debilitating joint disease characterized by progressive cartilage degeneration for which no definitive cure exists. Conventional management approaches often rely on fragmented and poorly coordinated pharmacological and non-pharmacological interventions that are inconsistently applied throughout the disease course. Persistent controversies regarding the clinical efficacy of chondroprotective agents, frequently highlighted by pharmacovigilance agencies,...