From what I can find...
- Anecdotally, my mother used to work in nursing homes for the elderly and found that around the full moon, patients slept less and were more agitated.
Anecdotal evidence concerning a relationship between human illnesses and a full moon is frequently claimed by as many as 81% of mental health workers (Francis, et al. 2017).
- Police have linked full moons to a rise in aggressive behaviour among drinkers on the streets of Brighton.
Research carried out by us has shown a correlation between violent incidents and full moons.
- The same newspaper report cited a 1998 study without reference information, stating that
In 1998, a three-month psychological study of 1,200 inmates at Armley jail in Leeds discovered a rise in violent incidents during the days on either side of a full moon.
During the first and last quarter of each lunar month there was a marked increase in violent incidents.During the remaining part of the month there were far fewer incidents and none at all on some days.
I have yet to find the 1998 study through Google Scholar etc. but I have found some research (e.g. the open access Foster & Roenneberg (2008)) finding no link. I was wondering if there has been any possible link found in clinical research?
My theory was initially that maybe the full moon might affect CSF (cerebral spinal fluid) levels around the various areas of the brain, much like it affects sea water levels with their tides. But, then I would have thought the same would occur at local sea tidal times. However, maybe tidal effects are stronger at full moon?
Attewill, F. (2007). Police link full moon to aggression. The Guardian. https://www.theguardian.com/uk/2007/jun/05/ukcrime
Foster, R. G., & Roenneberg, T. (2008). Human responses to the geophysical daily, annual and lunar cycles. Current biology, 18(17), R784-R794. https://doi.org/10.1016/j.cub.2008.07.003
Francis, O. J., Kopke, B. J., Affatato, A. J., & Jarski, R. W. (2017). Psychiatric Presentations During All 4 Phases of the Lunar Cycle. Advances in mind-body medicine, 31(3), 4–7. https://pubmed.ncbi.nlm.nih.gov/28841578/