Related Experiment Video
Updated: Sep 9, 2025
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Human Circadian Phenotyping and Diurnal Performance Testing in the Real World
Published on: April 7, 2020
8.6K
Cancer Patients Circadian Rhythm Assessment Based on Morningness-Eveningness Preference: A Cross-Sectional Study.
Ghazal Daftari1, Mahsa Abbaszadeh2, Sahar Karimpour Reyhan2
1Department of Internal Medicine Imam Khomeini Hospital Complex Tehran University of Medical Sciences Tehran Iran.
Health Science Reports
|September 5, 2025
Summary
Cancer patients exhibit normal circadian rhythm patterns. This study investigated circadian rhythm in 150 cancer patients, finding a normal distribution of circadian types, suggesting rhythm regularity in this population.
Area of Science:
- Chronobiology
- Oncology
- Sleep Medicine
Background:
- The circadian rhythm influences critical physiological functions, including sleep-wake cycles, cellular processes, and cancer development.
- Understanding circadian rhythm patterns in cancer patients is essential for potential therapeutic interventions.
Purpose of the Study:
- To investigate and characterize circadian rhythm patterns in a cohort of cancer patients.
- To assess the distribution of circadian rhythm types within this patient group.
Main Methods:
- A cross-sectional study involving 150 cancer patients admitted to a hospital.
- Data collection included demographic characteristics and the Morningness-Eveningness Questionnaire (MEQ).
- Statistical analyses employed Analysis of Variance (ANOVA) and Fisher's exact test to compare circadian rhythm types.
Main Results:
- The mean age of participants was 49.83 ± 14.53 years.
- Non-hematological cancers were prevalent (82.7%), with breast cancer being the most common (23.3%).
- The mean MEQ score was 56.6 ± 6.34, indicating a normal distribution of circadian rhythm patterns.
Conclusions:
- The study findings suggest that circadian rhythm is normally distributed among the cancer patient cohort.
- These results provide baseline data on circadian rhythm patterns in cancer patients.
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