Tag Archive for 'Circadian rhythm'

Sleeping with a TV or artificial light on may be a risk factor for gaining weight or developing obesity. Image credit: Pexels.

Having Artificial Light On While Sleeping Increases Risk of Weight Gain and Obesity in Women

Jun 12, 2019 by News Staff

Exposure to artificial light while sleeping may be a risk factor for weight gain and development of overweight or obesity, says a new study from the National...

Weekend recovery sleep doesn’t prevent weight gain or reduce insulin sensitivity. Image credit: Wok & Apix.

Metabolic Abnormalities More Prevalent Among Irregular Sleepers, Study Finds

Jun 7, 2019 by News Staff

A study published in the journal Diabetes Care has found that not sticking to a regular bedtime and wakeup schedule can put a person at higher risk for...

Christou et al conducted the first ever analysis of circadian rhythms in human fat taken from people isolated from daily environmental changes. Image credit: Bruce Blaus, Blausen.com / CC BY 3.0.

Study: White Fat Cells Have Their Own Internal Clocks

Feb 26, 2019 by News Staff

White fat cells (white adipose tissue) in the human body exhibit circadian rhythms affecting critical metabolic functions, according to a new study from...

Exercise elicits circadian phase-shifting effects.

Exercise Can Help You Counter Effects of Shift Work, Jet Lag, Other Disruptions to Circadian Clock

Feb 21, 2019 by News Staff

The circadian clock is the 24 hour cycle that regulates many physiological processes including sleeping and eating. Many factors affect this internal clock...

Kinouchi et al reveal that fasting affects peripheral circadian clocks in the liver and skeletal muscle. Fasting operates by influencing the circadian clock and fasting-sensitive transcription factors, thereby cooperatively achieving fasting-specific temporal gene regulation. Image credit: Kinouchi et al, doi: 10.1016/j.celrep.2018.11.077.

Study: Fasting Affects Peripheral Circadian Clocks, Improves Overall Health

Jan 17, 2019 by News Staff

Fasting affects peripheral circadian clocks in the liver and skeletal muscle, causing them to rewire their metabolism, which can ultimately lead to improved...

In Seattle, WA, delaying the start time of two high schools by 55 minutes lengthened students’ daily sleep by 34 minutes, and was associated with reduced sleepiness and increased academic performance. Image credit: E.B. Pilgrim.

Later School Start Times Increase Sleep, Attendance and Grades: Study

Dec 24, 2018 by News Staff

In 2017, the Seattle School District decided to delay the start time for secondary schools from 7:50 a.m. to 8:45 a.m. This change allowed a team of researchers...

Billari et al found that individuals with DSL access sleep 25 minutes less. Image credit: Tookapic.

Sleep Loss Impairs Metabolism, Leads to Adverse Weight Gain, Study Says

Sep 7, 2018 by News Staff

Losing just one night of sleep can have a tissue-specific impact on the regulation of gene expression and metabolism, according to new study. The findings,...

Migraines take a toll on around 1 billion people. This work by Baksa et al. indicates that individuals with certain gene variants in the CLOCK gene, which is involved in circadian rhythms, are at a higher risk of migraines when they are exposed to financial hardship. Image credit: Sasha Wolff / CC BY 2.0.

Study: Circadian Rhythm Gene Variants Increase Risk of Migraines from Financial Hardship

Sep 5, 2017 by Zvi Cramer

Researchers have shown that financial stress may cause more migraines in individuals with variants in the circadian rhythm gene CLOCK, suggesting that...

According to Ellen Stothard et al, a weekend camping trip prevents the typical weekend circadian and sleep delay. Image credit: Unsplash.

Weekend Camping Trip Can Help Re-Set Body’s Internal Clock, New Study Says

Feb 3, 2017 by News Staff

New research published in the journal Current Biology shows that as little as 48 hours of camping can help re-set the body’s circadian rhythm, or internal...

This image shows thirst neurons (blue) in mouse SCN. Image credit: C. Gizowski et al / McGill University.

Study Says Biological Clock Stimulates Thirst before Sleep

Sep 29, 2016 by News Staff

According to a study in rodents led by Prof. Charles Bourque of McGill University, the brain’s biological clock stimulates thirst in the hours before...

Sunflowers. Image credit: Betty Jo Tindle / CC BY-SA 3.0.

Sunflowers Use Internal Circadian Clock to Follow Sun

Aug 8, 2016 by News Staff

A team of scientists led by Prof. Stacey Harmer of the University of California, Davis, has discovered how sunflowers use their circadian clock, acting...

According to scientists at the University of Manchester, UK, the color of light has a major impact on how mammalian body clock measures the time of day. Image credit: Axel Kristinsson / CC BY 2.0.

Color of Light Influences Circadian Clock in Mammals, Scientists Say

Apr 20, 2015 by News Staff

A new study appearing in the journal PLOS Biology is the first to demonstrate that the color of light influences the circadian clock in any mammalian species. According...

The Hawaiian bobtail squid seems to have its biological rhythms regulated by a symbiotic bacterium (William Ormerod / Margaret McFall-Ngai)

Symbiotic Bacterium Shown to Regulate Biological Clock of its Host

Apr 24, 2013 by Natali Anderson

A new study published online in the journal mBio is the first to show that a bioluminescent bacterium known as Vibrio fischeri regulates a daily rhythm...