In fact,there have been a ton of studies over the years,all looking for any statistical connection between the moon ...especially the full moon, and its affects on human biology or behavior.
Most of the sound studies find no connection. Some have proved inconclusive, and many have purported to reveal connections,but they have actually turned out to involve flawed methods or have never been reproduced...
Reliable studies comparing the lunar phases to births, heart attacks, deaths, suicides, violence, psychiatric hospital admissions and epileptic seizures, among other things, have over and over again .....found little or no connection.
Yes,The human body is about 73 % water, and so people often suggest,such as in this thread, that tides might be at work inside us.
Its important to know that it isnt only the moon that affects gravity but moon and the sun together.Combined,the gravitational effect is so strong that our planet's crust is literally stretched daily by tidal effects.
Let me explain a little about how it works..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 opposite side of the earth, another high tide is occuring, because the center of the earth is being pulled toward the moon more than is the ocean on the far side. The result essentially creates a negative force that actually lifts the ocean away from the planet.
However, there is no measurable difference in the moon's gravitational effect to one side of your body vs. the other.
Even in the Great Lakes, tides never exceed 2 or 2 1/2 inches.And thats according to the National Oceanic and Atmospheric Administration (NOAA).
Its important to note that the effect of gravity diminishes with distance, but never goes away. So with that in mind, everything in the universe is tugging on everything else.
Researchers have even calculated that a mother holding her baby exerts 12 million times the tidal force on the child than the moon does, simply by being close.
Last but not least,I find it really interesting that the highest tides occur not just at full moons but also at new moon, when the moon is between Earth and the sun Our planet feels the combined gravitational affects, yet nobody ever claims any funny stuff related to the new moon .
Here is stuff on moon myths according to Straightdope.com.....
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).
Studies of full moon effects
Here are some of the reputable studies in peer-reviewed journals that have failed to find connections:
EPILEPSY: A study in the journal Epilepsy & Behavior in 2004 found no connection between epileptic seizures and the full moon, even though some patients believe their seizures to be trigged by the full moon. The researchers noted that epileptic seizures were once blamed on witchcraft and possession by demons, contributing to a longstanding human propensity to find mythical rather than medical explanations.
PSYCHIATRIC VISITS: A 2005 study by Mayo Clinic researchers, reported in the journal Psychiatric Services, looked at how many patients checked into a psychiatric emergency department between 6 p.m. and 6 a.m. over several years. They found no statistical difference in the number of visits on the three nights surrounding full moons vs. other nights.
EMERGENCY ROOM VISITS: Researchers examined 150,999 records of emergency room visits to a suburban hospital. Their study, reported in American Journal of Emergency Medicine in 1996, found no difference at full moon vs. other nights.
SURGERY OUTCOMES: Do doctors and nurses mess up more during the full moon? Not according to a study in the October 2009 issue of the journal Anesthesiology. In fact, researchers found the risks are the same no matter what day of the week or time of the month you schedule your coronary artery bypass graft surgery.
Not all studies dismiss lunar influence.
PET INJURIES: In studying 11,940 cases at the Colorado State University Veterinary Medical Center, researchers found the risk of emergency room visits to be 23 percent higher for cats and 28 percent higher for dogs on days surrounding full moons. It could be people tend to take pets out more during the full moon, raising the odds of an injury, or perhaps something else is at work — the study did not determine a cause.
MENSTRUATION: This is one of those topics on which you will find much speculation (some of it firm and convincing-sounding) and little evidence. The idea is that the moon is full every month and women menstruate monthly. Here's the thing: Women's menstrual cycles actually vary in length and timing — in some cases greatly — with the average being about every 28 days, while the lunar cycle is quite set at 29.5 days. Still, there is one study (of just 312 women), by Winnifred B. Cutler in 1980, published in the American Journal of Obstetrics & Gynecology, that claims a connection. Cutler found 40 percent of participants had the onset of menstruation within two weeks of the full moon (which means 60 percent didn't). If anyone can tell me how this oft-cited study proves anything, I'm all ears. Also, one should be skeptical that in the intervening 29 years, nobody seems to have produced a study supporting Cutler's claim.
ANIMALS GONE WILD: A pair of conflicting studies in the British Medical Journal in 2001 leaves room for further research. In one of the studies, animal bites were found to have sent twice as many British people to the emergency room during full moons compared with other days. But in the other study, in Australia, dogs were found to bite people with similar frequency on any night.
SLEEP DEPRIVATION: In the Journal of Affective Disorders in 1999, researchers suggested that before modern lighting, "the moon was a significant source of nocturnal illumination that affected [the] sleep–wake cycle, tending to cause sleep deprivation around the time of full moon." They speculated that "this partial sleep deprivation would have been sufficient to induce mania/hypomania in susceptible bipolar patients and seizures in patients with seizure disorders." Best I can discern, however, these oft-cited suggestions have never been tested or verified with any numbers or rigorous study of any kind.
Myths persist
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.
"If police and doctors are expecting that full moon nights will be more hectic, they may interpret an ordinary night's traumas and crises as more extreme than usual," explains our Bad Science Columnist Benjamin Radford. "Our expectations influence our perceptions, and we look for evidence that confirms our beliefs."
