Bad sleep around full moon is no longer a myth

July 25, 2013

Many people complain about poor sleep around full moon. Scientists at the University of Basel in Switzerland now report evidence that lunar cycles and human sleep behavior are in fact connected. The results have been published in the journal "Current Biology".

The research group around Prof. Christian Cajochen of the Psychiatric Hospital of the University of Basel analyzed the sleep of over 30 volunteers in two age groups in the lab. While they were sleeping, the scientists monitored their , eye movements and measured their hormone secretions. The findings suggest that even today, despite the comforts of modern life, humans still responds to the geophysical rhythms of the moon.

Short And Poor Sleep

The data show that both the subjective and the objective perception of the quality of sleep changed with the . Around full moon, in the areas related to deep sleep dropped by 30 percent. People also took five minutes longer to fall asleep and they overall slept for 20 minutes less. The volunteers felt as though their sleep had been poorer during full moon and they showed lower levels of melatonin, a hormone that regulates sleep and . "This is the first reliable evidence that lunar rhythm can modulate sleep structure in humans", Cajochen says.

A Relic From The Past According to the researchers, this circalunar rhythm might be a relic from past times, when the moon was responsible for synchronizing human behavior. This is well known for other animals, especially marine animals, where moon light coordinates reproduction behavior. Today, other influences of modern life, such as electric light, masked the moon's influence on us. However, the study shows that in the controlled environment of the laboratory with a strict study protocol, the moon's hold over us can be made visible and measurable again.

Explore further: Lunar cycle affects cardiac patients undergoing acute aortic dissection, study shows

More information: Current Biology, August 05, 2013. doi: 10.1016/j.cub.2013.06.029

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hdroguett
not rated yet Jul 25, 2013
I'm not sure if the study isolated the moonlight effect in the sleep.

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