I'd like to write today about an article on MSNBC.com entitled "Moon Myths: How real are lunar health effects?"
People often believe that "things" happen during full moons.
Though there have been tests and studies and experiments, nothing conclusive has shown that the full moon affects anything we do.
The reason for this is simple -- the light shining off of the moon when it is full does nothing to us, and the moon has no extra special properties when it's full than at any other point in it's cycle.
The only thing testing has shown us as a health connection to the full moon may be, according to the article:
One possible indirect link: Before modern lighting, the light of a full moon have kept people up at night, leading to sleep deprivation that could have caused other psychological issues, according to one hypothesis that awaits data support.
This could have caused people already susceptible to psychological issues related to sleep deprivation to be labelled "lunatics" if they were behaving oddly during full moons.
However, the one effect that the moon unmistakenly has is
gravity. The moon creates an obvious gravitational pull on us, most notably the high and low tides in the oceans. But as we all should be aware, tides happen all the time, not just during full moons.
Yes, full moons create higher tides than most other tides of the month (the exception being new moon tides), but it has nothing to do with the light shining on it from the sun. It has to do with the moon's position in its orbit relative to the sun. When the moon is full, it is on the opposite side of Earth than the sun is. That effect of two objects (the sun and the moon) pulling on the earth is what makes the tide happen. The same size of tides also happen when the moon is at new moon, or on the same side of the Earth as the sun is.
The ocean on the side of Earth facing the moon gets pulled toward the moon more than does the center of the planet. This creates a high tide. On the other side of the Earth, another high tide occurs, because the center of Earth is being pulled toward the moon more than is the ocean on the far side. The result essentially pulls the planet away from the ocean (a negative force that effectively lifts the ocean away from the planet).
Even so, the moon is also causing tides at other times of the month, too, not just at new and full phases. Those tides, however, aren't as pronounced as the new and full tides because the moon is on the "side" of the earth. The moon pulls the water towards the side, while the sun pulls the water towards the "front", and the two pulls sort of even each other out:


It's not just the water that gets pulled, the Earth itself does, too. EVERYTHING gets affected by gravity. And the closer you are to an object, the more gravity affects you. In fact, if you are standing up, your feet are ever-so-slightly getting pulled harder by the Earth's gravity than your head is. Never thought of that before, huh?
So, I've recently believed that if anything about the moon affects us humans, or other life on this planet, maybe it is the always-changing affect of gravity upon our body's consitution. Yes, the moon always is overhead at some point once each day, whether you see it or not. The moon-and-sun combo always causes a version of a high tide and a low tide on the earth everywhere twice a day each. At some points during a month those effects are stronger than at other times. Couldn't these gravitational effects be what causes some of us to feel good at some point, or bad, or "off" during a month -- or heck, even during all the hours of every given day?
And let's not forget, the moon doesn't go around the Earth in a perfect circle, either. At some points in its orbit, the moon is closer to earth than at other points. As the Earth and moon dance together on their trip around the sun, the moon's "close point" to Earth changes. There are times when the full moon tide or the new moon tide are even stronger than normal because the moon is itself even slightly closer than usual. The difference between its furthest distance and its closest distance is (according to Wikipedia) about 40,000 km (around 25,000 miles) -- that's a difference almost three Earth's wide! You can even see the moon appear slightly larger when you look at it during those times of year:

Some others say that gravity cannot affect us, that the effects of the moon's gravity aren't strong enough to do anything. How can that be the case when the Earth itself and its water are clearly affected by it? The article addresses this:
The human body is about 75 percent water, and so people often ask whether tides are at work inside us.
The moon and the sun combine to create tides in Earth's oceans (in fact the gravitational effect is so strong that our planet's crust is stretched daily by these same tidal effects).
But tides are large-scale events. They occur because of the difference in gravitational effect on one side of an object (like Earth) compared to the other.
However, there's no measurable difference in the moon's gravitational effect to one side of your body vs. the other. Even in a large lake, tides are extremely minor. On the Great Lakes, for example, tides never exceed 2 inches, according to the National Oceanic and Atmospheric Administration (NOAA), which adds, "These minor variations are masked by the greater fluctuations in lake levels produced by wind and barometric pressure changes. Consequently, the Great Lakes are considered to be essentially non-tidal."
I understand what they're trying to say here. Though the issue with tides is one side of a body vs. another, can't gravity just affect a small body of water? But they are saying that even a large lake only gets pulled by the moon's gravity just two inches at their greatest heights. So if a lake still is affected, shouldn't a glass of water sitting on a table? The answer should be yes, but only very, very, very slightly....perhaps not noticable by standard observation. Couldn't even such a minor difference affect a human being? And since we're not just a glass of water, but very sensitive living tissue (especially our brains), couldn't the slighest change affect us somehow?
The article continues:
That's not to say tides don't exist at smaller scales.
The effect of gravity diminishes with distance, but never goes away. So in theory everything in the universe is tugging on everything else. But: "Researchers have calculated that a mother holding her baby exerts 12 million times the tide-raising force on the child than the moon does, simply by virtue of being closer," according to Straightdope.com, a Web site that applies logic and reason to myths and urban legends.
Consider also that tides in Earth's oceans happen twice every day as Earth spins on its axis every 24 hours, bringing the moon constantly up and down in the sky. If the moon's tugging affected the human body, one might presume we'd be off balance at least twice a day (and maybe we are).
True enough, and I'm grateful that the article's author has the insight to at least acknowledge that possibility. In turn, those "off balance" effects may be more so when the gravitational effects are also stronger.
If we argue that the moon does truly affect us somehow, then why isn't everyone affected the same way as, say, I may be by this? Why doesn't everyone feel exactly the same if the moon's gravity does affect us? Maybe it's as simple as: everyone's different. Everyone reacts to things in different ways. Perhaps one person feels the affects of the new moon more than the first-quarter. Or others feel first-quarter or last-quarter moon pulls more than someone else feels new or full moon pulls. Who knows? Maybe some people feel nothing.
One item I've always thought of as being a "proof" that the moon affects us, or at least half of us, is the menstrual cycle of females. The word "menstrual" is even based off of a word for "moon" (the Greek "mene" evolved the Latin word "mensis", for month). It is widely thought that these cycles were generated into early humans by the moon's cycle.
But right there, there's an interesting insight that I hadn't stopped to think about until now. Humans. Gee, how anthro-centric are we? There are
plenty of other animals on this planet who go through a cycle of menstruation or similar (
the estrous cycle). And yet it's only the humans and many of the primates whose cycles are around the length of the moon's. Why is that? If the moon did affect a woman's cycle, why didn't it affect all female animal's cycles who are capable of menstruation?
Some info from Wikipedia:
Some authors believe women in traditional societies without nightlighting ovulated with the full moon and menstruated with the new moon. A few studies in both humans and animals have found that artificial light at night does influence the menstrual cycle in humans and the estrus cycle in mice (cycles are more regular in the absence of artificial light at night), though none have demonstrated the synchronization of women's menstrual cycles with the lunar cycle. It has also been suggested that bright light exposure in the morning promotes more regular cycles. One author has suggested that sensitivity of women's cycles to nightlighting is caused by nutritional deficiencies of certain vitamins and minerals.
Other animals' menstrual cycles may be greatly different from lunar cycles: while the average cycle length in orangutans is the same as in humans—28 days—the average for chimpanzees is 35 days. Some take this as evidence that the average length of humans' cycle is most likely a coincidence.
Yet, there is this regarding the moon's tidal rhythms in animals:
The approximately fortnightly cycle of the tides has large effects on intertidal organisms. Hence their biological rhythms tend to occur in rough multiples of this period. Many other animals such as the vertebrates, display similar rhythms. Examples include gestation and egg hatching. In humans, the menstrual cycle lasts roughly a month, an even multiple of the tidal period.
The problem here with menstruation is we are talking about tides vs. light in relation to the moon. The studies done on menstruation dealt with night lighting the moon provides.
Perhaps monthly menstruation
is just a conincidence. Some things just are. It may seem an odd coincidence, so one is not fully satisfied with an answer of that nature. I don't know what to think anymore, myself. If we argue that the moon is a cause, then are humans just more sensitive to moon changes than chimpanzees? Or horses? Is that why women menstruate once a month, rather than say, every seven weeks? And is it the light or the gravity that does it?
Perhaps menstruation has absolutley nothing to do with the moon. And perhaps "off" feelings have nothing to do with it, either. In the MSNBC.com article:
If one presumes that modern lighting and mini-blinds have pretty much eliminated the one plausible source of human-related moon madness, why do so many myths persist?
Several researchers point out one likely answer: When strange things happen at full moon, people notice the "coincidental" big bright orb in the sky and wonder. When strange things happen during the rest of the month, well, they're just considered strange, and people don't tie them to celestial events.
And that leads to this final note, which is perhaps the biggest logical nail in the coffin of the moon madness myths:
The highest tides occur not just at full moon but also at new moon, when the moon is between Earth and the sun (and we cannot see the moon) and our planet feels the combined gravitational effect of these two objects. Yet nobody ever claims any funny stuff related to the new moon
You have to admit, this is true. No one ever says "must be a new moon".
But I don't want anyone reading this post of mine to think that what I'm talking about is "looniness" or "strange things", such as the standard claims indicated in the article: eplilepsy attacks, increased emergency psychiatric visits, hospital emergency room visits, botched surgeries (whaaaat?), pet injuries or animal attacks. I'm simply referring to that "off" feeling one gets without any outside stimulus.
All I'm asking is, could it be a minor gravitational effect on your body caused by the dance of the Earth, sun and moon? Heck, I've had odd things happen to me, and I've looked at the calendar to see what the moon phase is. It's not always at full or new, either. So I can't know for sure.
I can see how it's easier for people to blame the moon for how they are acting. Perhaps that's why the idea of the "crazy" full moon persists. And maybe my idea of gravity affecting our brains is just as hopeful of a thought, too, without any real truth to it. I have to accept that possibility. So far the evidence up to now (which really shouldn't be ignored) says "no connection".
I'll still hope for some connection, though. Maybe it's really infinistesimal, but when we see how gravitation, the weakest force in the universe, has such a great effect on all the vast items
in the universe, I can't help but think the moon's does something to us, too, even as we live on this relatively giant planet with it's own gravitation to worry about.
Or am I just loony, pun intended?