Circadian Rhythm

Circadian Rhythm is the regular recurrence, in cycles of about 24 hours, of biological processes or activities, such as sensitivity to drugs and stimuli, hormone secretion, sleeping, feeding, etc. This rhythm seems to be set by a 'biological clock' which seems to be set by recurring daylight and darkness.

How Does the Suprachiasmatic Nucleus (SCN) Control Circadian Rhythm?

Circadian rhythms are biological cycles within organisms that allow them to adjust their physiology and behavior to anticipate and adapt to changes in the outside environment. Circadian rhythms are maintained with the help of circadian clocks, the main circadian clock in mammals is the suprachiasmatic nucleus (SCN).

What is the Circadian Rhythm?

Circadian Rhythm and Weight Loss

Artificial Light Exposure and Circadian Rhythm

Circadian Rhythm Length Variations - Early Birds and Night Owls

Circadian Rhythm Sleep Disorders

Social Jetlag and Sleep

How Does Airplane Travel Affect the Human Body?

The Circadian Rhythm and the Immune System

Memory Recall and Circadian Rhythm

Chronobiology: Why Time Matters in Medicine

Latest Circadian Rhythm News and Research

New review explores the key gender differences in sleep, circadian rhythms and metabolism

A new review of research evidence has explored the key differences in how women and men sleep, variations in their body clocks, and how this affects their metabolism.

12 Apr 2024

Infant gut microbiomes exhibit circadian rhythms independent of external cues

Infant gut microbiomes oscillate with a circadian rhythm, even when they are cultivated outside of the body.

2 Apr 2024

Medical malpractice incident severity found to be higher during daylight saving time

Medical malpractice incidents are more severe during the months of the year when daylight saving time is observed in the U.S., according to a new study that examined three decades of malpractice claims.

7 Mar 2024

International commission examines conflicting evidence on health effects of blue light exposure

For years, scientists have expressed concern about potential adverse health effects of excessive exposure to short wavelength light (SWL), which includes the "blue light" from smartphones, laptops, and tablets.

5 Mar 2024

Sleep-circadian disturbances can trigger or worsen a range of psychiatric disorders

Problems with our sleep and internal body clock can trigger or worsen a range of psychiatric disorders, according to a new review of recent research evidence.

19 Feb 2024

Elevated cortisol in pregnant women with depression linked to preterm birth, low birth weight

Women with depressive symptoms during pregnancy may experience an alteration in the circadian rhythm of cortisol — a hormone that is necessary for fetal development — which could affect the course of pregnancy.

1 Feb 2024

Study explores the mediatory role of gut microbiota in metabolic syndrome and sleep disorders

Researchers described gut microbiota and metabolic alterations common to metabolic syndrome (MetS) and sleep disorders.

31 Jan 2024

Sweat tattoos: UMass Amherst develops skin-friendly monitors for health insights

University of Massachusetts Amherst researchers have received an award to develop a new type of sweat monitor that can be applied to the skin just like a temporary tattoo and assess the molecules present, such as cortisol.

25 Jan 2024

Irregular sleep rhythm linked to poorer cardiovascular health in middle-aged people

According to recent research, an irregular sleep rhythm is associated with poorer cardiovascular health in middle-aged people. Inconsistent bedtimes appear to particularly increase waist circumference.

24 Jan 2024

Belief in caffeine improves running performance

The placebo effect of caffeine ingestion on running performance.

24 Jan 2024

"TimeMachine" algorithm revolutionizes circadian rhythm analysis with single blood sample

"TimeMachine," an algorithm developed by U.S. researchers, accurately predicts circadian phase from a single blood sample using gene expression, offering a novel, efficient approach to understanding circadian rhythms and their impact on health.

9 Jan 2024

The link between circadian rhythm and night eating syndrome

Night eating syndrome (NES) symptomatology and its possible links with circadian rhythm.

9 Jan 2024

'Visual system' protein appears to be key for stabilizing the body's circadian rhythms

Scientists at the Johns Hopkins University School of Medicine and the National Institutes of Health have identified a protein in the visual system of mice that appears to be key for stabilizing the body's circadian rhythms by buffering the brain's response to light.

28 Dec 2023

Circadian Rhythm

Overview

What is the Circadian Rhythm?

Circadian Rhythm and Weight Loss

Artificial Light Exposure and Circadian Rhythm

Feature Articles

Circadian Rhythm Length Variations - Early Birds and Night Owls

Circadian Rhythm Sleep Disorders

Social Jetlag and Sleep

How Does Airplane Travel Affect the Human Body?

The Circadian Rhythm and the Immune System

Memory Recall and Circadian Rhythm

Chronobiology: Why Time Matters in Medicine

Latest Circadian Rhythm News and Research

New review explores the key gender differences in sleep, circadian rhythms and metabolism

Infant gut microbiomes exhibit circadian rhythms independent of external cues

Medical malpractice incident severity found to be higher during daylight saving time

International commission examines conflicting evidence on health effects of blue light exposure

Sleep-circadian disturbances can trigger or worsen a range of psychiatric disorders

Elevated cortisol in pregnant women with depression linked to preterm birth, low birth weight

Study explores the mediatory role of gut microbiota in metabolic syndrome and sleep disorders

Sweat tattoos: UMass Amherst develops skin-friendly monitors for health insights

Irregular sleep rhythm linked to poorer cardiovascular health in middle-aged people

Belief in caffeine improves running performance

"TimeMachine" algorithm revolutionizes circadian rhythm analysis with single blood sample

The link between circadian rhythm and night eating syndrome

'Visual system' protein appears to be key for stabilizing the body's circadian rhythms

D-alanine linked to gluconeogenesis in the kidney and circadian clock

Understanding the link between primary cilia, biological clock and wound healing

Night owls at higher risk of coronary artery calcification

New "human-centric" LEDs could potentially enhance drowsiness or alertness on command

Study finds key gene deletion shields mice from diet-induced obesity and liver disease

Working night shifts associated with higher occurrence of disordered sleep

From LED screens to genes: The effects of blue light on aging and m6A methylation in fruit flies

Expanding research and clinical options for children with cancer

Examining how pain could play a direct protective role in the gut

From Puberty to Menopause: Clue’s CEO, Audrey Tsang on the Power of Femtech

Circadian Rhythm

Overview

Feature Articles

Circadian Rhythm Length Variations - Early Birds and Night Owls

Circadian Rhythm Sleep Disorders

Social Jetlag and Sleep

How Does Airplane Travel Affect the Human Body?

The Circadian Rhythm and the Immune System

Memory Recall and Circadian Rhythm

Chronobiology: Why Time Matters in Medicine

Latest Circadian Rhythm News and Research

Expanding research and clinical options for children with cancer

Examining how pain could play a direct protective role in the gut

From Puberty to Menopause: Clue’s CEO, Audrey Tsang on the Power of Femtech

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