Posts Tagged ‘lunar cycle’

New moon gives higher blood pressure in children

April 24, 2015

Once upon a time, Astrology was the only science. It then became pseudo-science as the age of rational science took off. In the modern world it is considered a belief system and the stuff of charlatans. Tests of astrological predictions have shown that their forecasts are no better than would be expected by chance (here and here). It is generally considered absurd that distant celestial objects can have any impact on human life or behaviour.

But in recent times it has become clear that the near celestial objects (the Sun, the moon and even Jupiter) do interact with the earth sufficiently to give correlations between their relative motion and some aspects of human life and behaviour. Our internal body clocks not only reflect the 24 hour cycle of the earth’s rotation, but even have an “annual” component seemingly related to the earth’s period of rotation around the Sun and may even have a lunar monthly component. The season of birth has been linked to personality and that begins to sound like astrology. There are now also correlations showing other possible connections to the period of rotation of the moon around the earth:

That the moon may have effects on the results of cardiac surgery is apparently not just rubbish.

It seems that the lunar nodal cycle (18.6 years) is also reflected in happenings on earth:

The lunar nodal cycle does seem to correlate with happenings on Earth. The mechanisms leading to most lunar effects on tides and sedimentation and geologic accumulations and tidal flows and sea surface temperatures and climate can be put down to some interplay of gravitational forces.

It is not such a long stretch to think that the gravitational effects of the larger planets may have some quite unlooked for effects on life on Earth.

The Sun and the moon do affect us it seems  – even if not the stars. And now it is reported from Denmark that “the lunar cycle seems to have an effect on children’s health and activity levels, but scientists are at a loss when it comes to finding an explanation for this”. The effects are small but clearly significant.

Nordic Science reports:

Just a few decades ago, it was still widely believed that the full moon held special powers and could make people act strange or even go mad. This has long since been dismissed as unscientific superstition. However, it might be time to revise that notion.

A new study, published in the scientific journal Clinical Obesity, shows that the lunar cycle is associated with a negative effect on children’s levels of physical activity, blood pressure, and blood sugar levels.

“It’s a very mysterious finding.  We actually have no idea what the reason could be for these changes in children’s behaviour during the course of the lunar cycle. It’s the first time anyone has studied children’s health in relation to the lunar cycle,” says Mads Fiil Hjorth, postdoc at the Department of Nutrition, Exercise, and Sports at the University of Copenhagen.

“Perhaps the explanation is hidden far back in evolutionary history, when moonlight could influence chances of survival and reproduction among animals and small organisms,” he says.

Hjorth is the main author of the new research article that has been written in collaboration with a team of scientists from the research centre OPUS at University of Copenhagen.

During the study, the scientists collected data from 795 children aged 8-11, taking blood samples and measuring blood pressure, sleep, and activity levels. The information was gathered over the course of nine lunar cycles – i.e. months – and then analysed.

The results revealed that on the days around a full moon the children were on average 3.2 minutes less moderately to very physically active than at new moon; equivalent to roughly 8 percent lower activity levels.

Moreover, the children’s blood pressure was 0.8 mmHg higher – equivalent to an increase of roughly 1 percent – and had an average of 0.12 mmol/L higher blood sugar levels – equivalent to an increase of just over 2 percent. Finally, the children slept 4.1 minutes more on average at full moon. ……

…….. Sleep scientist Birgitte Kornum, PhD and senior researcher at the Molecular Sleep Laboratory at Glostrup Hospital’s Research Institute, is optimistic about the results.

“This is very exciting. At this stage there is good evidence to suggest that we all have a monthly cycle inside that influences our sleep and perhaps other areas, too,” she says.

“The question is whether it’s a coincidence that the cycle follows the amount of moonlight that shines down on us, or whether the human cycle is an innate part of our biology, like the female menstrual cycle.” ….. 

Hardly any Indian Hindu wedding today takes place without first checking with astrologers that the couples’ horoscopes are not in conflict and that the day and time of the wedding is auspicious. The astrologers may well be charlatans and their various calculations are clearly just so much mumbo-jumbo, but I would not be so quick to dismiss the social and psychological importance of getting their “stamp of approval”. Astrology is still just a system of belief and astrological approval then has the importance of any religious rite.

Another Sunday, another week — but why?

November 3, 2013

The seven-day week must go down as being one of the most “unnatural” yet persistent creations of man. It is very practical of course, but why do we have it?

There are no discernible periodicities that we have been able to find outside ourselves which take 7 days. There are no periodicities within ourselves either that are 7 days or multiples of 7 days.  There are no celestial or astronomical cycles in tune with 7 days. There are no movements of the sun or the moon or the stars that give rise to a 7-day period. There are no weather or climate phenomena that repeat with a 7-day period. There are no human behavioural patterns that dance to a 7-day tune. There are no living things that have a 7-day life cycle. (There is a branch of pseudoscience which claims that living cells may be associated with a weekly or a half-weekly cycle – a circaseptan or a circasemiseptan rythm – but this is still in the realms of fantasy).

It would seem logical that our ancestors must have first noted the daily cycle long before they were even recognisable as human.  As humans they probably then noted the lunar cycle of about 29 days and the yearly cycle of about 365 days. Our distant ancestors would also have noted that the period of the yearly cycle was a little more than 12 lunar cycles. By about 35,000 years ago we have evidence that the lunar cycle was known and was being tracked. This evidence is in the form of a tally stick with 29 marks – the Lebombo bone.

The development of beliefs in gods of light and separate gods of darkness is not so difficult to understand. The gods of winds and fires and mountains and rivers are equally understandable. The fact that the lunar cycle was rather badly synchronised with the annual solar cycle could well have led to the concept of sun-gods and moon-goddesses, each with their own areas of influence.  (In fact, considering the imperfection of the design of the universe which is manifested in the lack of synchronisation between the various celestial cycles, it is difficult to understand how a concept of a single all-powerful creator ever arose. Why would such a poor design be the product of an all-powerful creator? Surely he could have managed the simple 3-body problem to synchronise the various rotations of the earth, the moon and the Sun?)

The invention of the seven-day week can best be dated to be at least 5,000 years ago to the time of the Babylonians. It was certainly long before the Old Testament came to be written to fit with the 7-day week which had already been invented and established. The story goes that

the seven-day week was actually invented by the Assyrians, or by Sargon I (King of Akkad at around 2350 B.C.), passed on to the Babylonians, who then passed it on to the Jews during their captivity in Babylon around 600 B.C.  The ancient Romans used the eight-day week, but after the adoption of the Julian calendar in the time of Agustus, the seven-day week came into use in the Roman world. For a while, both the seven and eight day weeks coexisted in the Roman world, but by the time Constantine decided to Christianize the Roman world (around A.D. 321) the eight-day weekly cycle had fallen out of use in favor of the more popular seven-day week.

The idea that the 7-days originates from a division of the lunar cycle into 4 seems improbable. The lunar cycle (synodic period) is 29.5305882 days long. Three weeks of 10 days each or five 6 day weeks would fit better. That the annual cycle of 365.2425 days comes to dominate is not so surprising. Our calendar months are now attuned to the annual cycle and have no direct connection to the lunar cycle. But it is our 7 – day weeks which remain fixed. We adjust the length of our months and have exactly 365 days for each of our  normal years. We then add an extra day every 4 years  but omit 3 such extra days in every 400 years to cover the error. We make our adjustments by adding a day to the month of February for the identified leap years but we do not mess with the 7 days of the week.

It is far more likely that the 7 days comes from the seven celestial objects visible to the naked eye from earth and probably known to man some 5,000 to 10,000 years ago. They were familiar with the Sun, the Moon, Mars, Mercury, Jupiter, Venus, and Saturn by then. Naturally each was a god in his own heaven and had to have a day dedicated just to him/her/it. The same 7 celestial objects are used for the days of the week not only in the Greek/Roman Western tradition, but also in Indian astrology. The Chinese /East Asian tradition uses the Sun, Moon, Fire, Water, Wood, Gold and Earth to name the seven days of the week. But this must have come after the 7 day week had already been established elsewhere. (For example, to name up to 10 days they could just have chosen to add days named for the Air, Beasts, Birds ….). Some languages use a numbering system and some use a mixture of all of the above. Rationalists and philosophers and dreamers have tried to shift to 5 and 6, and 8 and 10 day weeks but none of these efforts has managed to challenge the practicality or to dislodge the dominance of the seven-day week.

And now the whole world lives and marches – socially, culturally, politically – to the inexorable beat of the 7-day week.

Just because some long-forgotten astrologer/astronomer decided that he would dedicate each day to one of his seven known celestial gods (and he only had seven)! Even if he (unlikely to have been a “she”) worshipped an Earth-goddess, she must have been considered inferior to the celestial gods. Otherwise we would have had an 8-day week! 

An alien race could be excused for concluding that humans must have evolved from once having seven fingers on each limb. Or that we once had seven limbs and have lost 3. Or that humans have an innate circaseptan rythm requiring extra rest and sleep every 7 days. Or that humans have a physiological need to go binge drinking on the sixth day and need the seventh day to recover!

But if the 7-day week is a Divine creation then the aliens will also have a 7-day week and will not be in the least surprised.

The number seven does have a few special properties:

Not forgetting the Seven Wonders of the Ancient World. But they only came after the seven day week had been invented and introduced.


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