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

Timing of meals impacts glucose tolerance and health

Although people have always said that having a light and early dinner is better, a study by the Universitat Oberta de Catalunya (UOC) and Columbia University has provided the scientific grounds for this argument.

20 Nov 2024

Study reveals liver-brain communication as key to managing circadian eating patterns and obesity

This study uncovers the hepatic vagal nerve's influence on circadian food intake, presenting new avenues for obesity treatment through targeted interventions.

11 Nov 2024

How gut bacteria regulate stress and sleep cycles

This study reveals that gut microbiota, particularly Lactobacillus species, regulate the daily rhythm of stress hormones like corticosterone, influencing stress responses and brain function at different times of the day. Disruptions in gut bacteria lead to altered stress responses and increased susceptibility to disorders like depression.

10 Nov 2024

Liver-brain connection revealed as key to eating habits and metabolism

People who work the nightshift or odd hours and eat at irregular times are more prone to weight gain and diabetes, likely due to eating patterns not timed with natural daylight and when people typically eat.

7 Nov 2024

Exploring the circadian influence of immune cells on metabolic health and fat storage

Recent research reveals that the immune system interacts with the body's internal clock, influencing both fat storage and temperature regulation. These insights carry substantial implications for individuals with irregular work, eating, or sleep patterns driven by the demands of modern life.

6 Nov 2024

Study uncovers key role of gut microbiota in regulating stress responses

A pioneering study has uncovered the vital role that gut microbiota plays in regulating stress responses by interacting with the body's circadian rhythms.

5 Nov 2024

Bright night light exposure increases mortality risk, while daylight reduces it

Study reveals that brighter night light exposure and circadian rhythm disruption significantly increase the risk of mortality, particularly from cardiometabolic diseases, while brighter daytime light lowers these risks.

16 Oct 2024

Researchers uncover secret to regulating the body's internal clock

Scientists from Duke-NUS Medical School and the University of California, Santa Cruz, have discovered the secret to regulating our internal clock.

7 Oct 2024

Circadian rhythm influences dementia diagnosis and disease progression

The time of day when blood is taken can affect the results of tests for diagnosing dementia, according to new research led by the University of Surrey.

3 Oct 2024

Light pollution may elevate Alzheimer's risk

Outdoor light at night could be a significant risk factor in Alzheimer's disease, according to new research from Rush.

11 Sep 2024

Reduced heart rate variability linked to higher mortality in people with diabetes

Disruption to normal variations in daily heart rate (HR) is associated with a much higher risk of dying in people with type 1 and type 2 diabetes over 21 years, according to new research to be presented at this year's Annual Meeting of The European Association for the Study of Diabetes (EASD), Madrid (9-13 Sept).

9 Sep 2024

Night owls have higher BMI, larger waists and face higher risk of type 2 diabetes

Night owls have a higher BMI, larger waists, more hidden body fat and are almost 50% more likely to develop type 2 diabetes (T2D) than those who go to bed earlier, new research to be presented at the Annual Meeting of the European Association for the Study of Diabetes (EASD) in Madrid, Spain (9-13 September), has found.

9 Sep 2024

Regular mobile phone use linked to increased cardiovascular disease risk in smokers and diabetics

A new study has found that regular mobile phone use was positively associated with incident cardiovascular diseases risk, especially in current smokers and individuals with diabetes. In addition, this association was partly attributed to poor sleep, psychological distress, and neuroticism.

4 Sep 2024

Evening versus morning dosing of antihypertensive medications provides no added benefits

In two trials, one in frail elderly patients, evening administration of blood pressure (BP)-lowering medications had no clinical benefits over morning administration, according to late-breaking research presented in a Hot Line session today at ESC Congress 2024.

1 Sep 2024

Exploring early detection of Alzheimer's disease through non-cognitive symptoms

The article presents a thorough examination of Alzheimer's disease (AD), emphasizing early detection as critical due to the disease's progression through stages from normal cognition to mild cognitive impairment (MCI) and eventually dementia.

26 Aug 2024

How diet shapes gut microbiota and affects brain function

Researchers discuss the diet-microbiota-gut-brain axis, which describes the role of both diet and gut microbiota composition on cognitive and emotional health.

26 Aug 2024

New method determines optimal timing for cancer treatment based on circadian rhythm

How effective medications are depends on various factors, including the time of day when they are administered.

23 Aug 2024

Irregular sleep and poor REM sleep linked to higher risk of chronic diseases

Longitudinal data from wearable devices linked to health records show that irregular sleep patterns and inadequate REM sleep increase the risk of chronic diseases like hypertension and depression. This emphasizes the importance of consistent and high-quality sleep for overall health.

22 Jul 2024

Exploring the impact of eating timing on health and metabolism

Accumulating evidence on the effect of the time of eating in relation to our circadian rhythm and metabolism shows that when we eat may influence our overall health and well-being.

18 Jul 2024

Study links circadian rhythm disruption to obesity and diabetes

Disruption of circadian rhythms and clock gene expression is linked to adverse metabolic health outcomes, including obesity and diabetes. Further research is needed to understand these relationships and their implications for treatment and prevention.

17 Jul 2024