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Posts Tagged "circadian rhythm"

@ScientificAmerican

Transcript: Live Chat with SA Blogs Editor Bora Zivkovic on Clocks, Metabolism and Evolution

Circadian rhythms and disrupted sleep cycles were the hot topics during a live 30-minute chat that I hosted on Friday, June 1, with SA Blogs Editor Bora Zivkovic. An edited transcript follows. Thanks to SA Senior Product Manager Angela Cesaro for technical support. (For further reading on circadian rhythm research, you can start by looking [...]

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Observations

How Your Smartphone Messes with Your Brain—and Your Sleep

Light from those screens triggers a chemical reaction that makes you think it is morning

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Observations

Circadian clock without DNA–History and the power of metaphor

ResearchBlogging.org

Last week, two intriguing and excellent articles appeared in the journal Nature, demonstrating that the transcription and translation of genes, or even the presence of DNA in the cell, are not necessary for the daily ("circadian") rhythms to occur (O’Neill & Reddy 2011, O’Neill et al., 2011). (Scientific American is part of Nature Publishing Group.) [...]

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Observations

Plucked hairs can keep track of circadian rhythms

Our sleep patterns, eating habits, body temperature and hormone levels are driven by the rhythmic activity of body’s circadian clock. Travel across time zones or shift work can knock those rhythms out of whack,  possibly leading to sleep problems,  bipolar disorder, metabolic syndrome and even cancer.  The lack of convenient and reliable methods to monitor [...]

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Observations

Confused circadian rhythm could increase triglycerides

body clock can change triglyceride levels at cellular level

Having a mixed up body clock has been linked to a vast array of ailments, including obesity and bipolar disorder. And researchers are still trying to understand just how these cyclical signals influence aspects of our cellular and organ system activity. Now, a study published online August 3 in Cell Metabolism shows that in mice, [...]

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