The Lunar effect is the belief that there is a connection between the stages of the moon's lunar cycle and human or animal behavior. Many studies have been conducted on the subject, but no connection between the lunar cycle and human behavior or biology have been found. People most commonly connect the phases of the moon to births, heart attacks, deaths, suicides and violence.
For example, many people believe the moon effects our bodies the way it effects the ocean, because we are made of 75% water. The moon's pull is able to create tides in the ocean, so many people believe that the moon could effect our bodies. However, the amount of water in a human body is a very small fraction of the amount in earth's oceans. Even in large lakes, tides do not exceed two inches.
Another common myth is that people will become 'crazy' during a full moon. This was dis proven in 2005 when researchers from Mayo Clinic reviewed records of patient check in times from a psychiatric hospital. The researches found no increase in the number of check in's during a full moon.