Does the Moon Affect our Mood or Actions?

Does the Moon Affect our Mood or Actions?

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Scientists say no… and yet….

Always surrounded by an aura of mystery, the moon and its possible influence over human behaviour has been object of ancestral fascination and mythical speculation for centuries. While the full moon cannot turn people into werewolves (disappointingly), some people do accuse it of causing a bad night’s sleep or creating physical and mental alterations. But is there any science behind these myths?

To establish if lunar phases somehow do affect humans, an international group of researchers studied children to see if their sleeping patterns changed or if there were any differences in their daily activities.  “We considered that performing this research on children would be particularly more relevant because they are more amenable to behaviour changes than adults and their sleep needs are greater than adults,” said Dr. Jean-Philippe Chaput, from the Eastern Ontario Research Institute.

The study was completed on a total of 5812 children from five continents. The children came from a wide range of economic and sociocultural levels, and variables such as age, sex, highest parental education, day of measurement, body mass index score, nocturnal sleep duration, level of physical activity and total sedentary time were considered.

Data collection took place over 28 months – and 28 lunar cycles. These were then subdivided into three lunar phases: full moon, half-moon and new moon. The findings obtained in the study revealed that in general, nocturnal sleep duration around full moon compared to new moon reported an average decrease of 5 minutes (or a 1% variant). No other activity behaviours were substantially modified.

“Our study provides compelling evidence that the moon does not seem to influence people’s behaviour. The only significant finding was the 1% sleep alteration in full moon, and this is largely explained by our large sample size that maximises statistical power,” said Chaput. The clinical implication of sleeping 5 minutes less during full moon does not represent a considerable threat to health. “Overall, I think we should not be worried about the full moon. Our behaviours are largely influenced by many other factors like genes, education, income and psychosocial aspects rather than by gravitational forces,” he added.

While the results of this study are conclusive, controversy over the moon could result in further research to determine if our biology is in some way synchronised with the lunar cycle or if the full moon has a larger influence in people suffering mental disorders or physical ailments.

“Folklore and even certain instances of occupational lore suggest that mental health issues or behaviours of humans and animals are affected by lunar phases. Whether there is science behind the myth or not, the moon mystery will continue to fascinate civilisations in the years to come,” he said.

And yet… sometimes hard science doesn’t have all the answers. Scientists can’t prove that love exists, all they can do is show behaviours that accompany “love.”

So with that in mind let’s look at a study of 18,495 records from patients admitted to a psychiatric hospital in an 11-year period. Admissions for psychosis were highest during the new moon and lowest during the full moon. A second study looked at 25,568 psychiatric emergency room visits in a 13-year period. Visits increased near the first quarter moon and a decreased around the new moon and full moon.

Perhaps we are studying the wrong part of the lunar cycle? Perhaps it’s the new moon that makes everyone nuts? Let the mystery live on….

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