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Four timely facts about our biological clocks

Date:
October 30, 2014
Source:
NIH, National Institute of General Medical Sciences (NIGMS)
Summary:
After you roll your clocks back by an hour, you may feel tired. That's because our bodies — more specifically, our circadian rhythms — need a little time to adjust. These daily cycles are run by a network of tiny, coordinated biological clocks. One researcher tracks circadian rhythm research being conducted in labs across the country, and he shares a few timely details about our internal clocks.
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After you roll your clocks back by an hour this Sunday, you may feel tired. That's because our bodies -- more specifically, our circadian rhythms -- need a little time to adjust. These daily cycles are run by a network of tiny, coordinated biological clocks.

Mike Sesma of the National Institutes of Health tracks circadian rhythm research being conducted in labs across the country, and he shares a few timely details about our internal clocks:

1. They're incredibly intricate. Biological clocks are composed of genes and proteins that operate in a feedback loop. Clock genes contain instructions for making clock proteins, whose levels rise and fall in a regular cyclic pattern. This pattern in turn regulates the activity of the genes. Many of the results from circadian rhythm research this year have uncovered more parts of the molecular machinery that fine-tune the clock.

2. Every organism has them -- from algae to zebras. Many of the clock genes and proteins are similar across species, allowing researchers to make important findings about human circadian processes by studying the clock components of organisms like fruit flies, bread mold and plants.

3. Whether we're awake or asleep, our clocks keep ticking. While they might get temporarily thrown off by changes in light or temperature, our clocks usually can reset themselves.

4. Nearly everything about how our body works is tied to biological clocks. Our clocks influence alertness, hunger, metabolism, fertility, mood and other physiological conditions. For this reason, clock dysfunction is associated with various disorders, including insomnia, diabetes and depression. Even drug efficacy has been linked to our clocks: Studies have shown that some drugs might be more effective if given earlier in the day.

Learn more:

Circadian Rhythms Fact Sheet: http://www.nigms.nih.gov/Education/Pages/Factsheet_CircadianRhythms.aspx

Resetting Our Clocks: New Details About How the Body Tells Time Article from Inside Life Science: http://publications.nigms.nih.gov/insidelifescience/resetting-our-clocks.html


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Materials provided by NIH, National Institute of General Medical Sciences (NIGMS). Note: Content may be edited for style and length.


Cite This Page:

NIH, National Institute of General Medical Sciences (NIGMS). "Four timely facts about our biological clocks." ScienceDaily. ScienceDaily, 30 October 2014. <www.sciencedaily.com/releases/2014/10/141030213700.htm>.
NIH, National Institute of General Medical Sciences (NIGMS). (2014, October 30). Four timely facts about our biological clocks. ScienceDaily. Retrieved October 30, 2024 from www.sciencedaily.com/releases/2014/10/141030213700.htm
NIH, National Institute of General Medical Sciences (NIGMS). "Four timely facts about our biological clocks." ScienceDaily. www.sciencedaily.com/releases/2014/10/141030213700.htm (accessed October 30, 2024).

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