A significant proportion of humanity is convinced that the moon has a powerful effect on our psyche. One of the scientific papers published in North America indicates that 40% of society recognizes the influence of the moon on the mind. This indicator among mental health professionals is as much as 74%. However, the number of patients with injuries, symptoms of psychosis or mania, after attempted suicide, or after a car accident cannot be associated with the phases of the moon.
This disproportion between facts and beliefs led three Californian psychiatrists to investigate the matter. In the work “The Moon and Madness Reconsidered” they put forward a thesis that before artificial light was implemented in the 19th century, full moon actually had an impact on people with a sensitive psyche. It shortened and weakened the quality of sleep, which consequently aggravated the mental state of sleepless people.

Perhaps lunar light affects the human psyche in some way, but actually it is the lack of sunlight that causes depressive states in most of the population. In countries with limited sun exposure (such as Sweden and Norway), where during winter the sun shines only 60 minutes a day, a special SAD disease (short for Seasonal affective disorder) has been recognized. Phototherapy helps to fight the symptoms of winter depression associated with SAD. Therefore, the Swedish city of Umea built 30 bus stops imitating daylight.

The window you are reading about works the same way.