Power for the Body and Spirit

Fitness is the most important prerequisite for individual comfort and balance. Light has a great influence - e.g. on metabolism. Too little light may lead, just as during the winter season, to diseases caused by a shortage of light. Human beings need the long-lasting effects of light in connection with natural daily rhythms. If this regular daily rhythm is disrupted, this may affect the human body.

Problems caused by lack of light

Currently, depression belongs among the most frequent psychiatric disorders. Most likely, it has always been the same. In 1980s, statistics showed for the first time that there is a relationship between the change of seasons and the frequency, intensity and occurrence of depression. In monitored patients, in addition to an increase of the frequency of depression during the winter months, attention was attracted by an increase of depressive disorders in the afternoon and evening.

Light helps us to relax. A lack of light can be balanced in the winter by increased luminous intensity over 2,000 lx. These luminous intensities significantly affect the mental state in a positive manner. The efficiency of light therapy has been proven in many studies. A decrease in depressive symptoms by more than 50% may be achieved in this manner

Visual Ability and Optical Sensitivity

In common with all other mammals, the human eye is a sensitive organ, which is highly sensitive to light and transmits the light information directly to brain. With the receptive qualities of the eye, it is subject to circadian changes. Serious disturbances of the circadian course and acute lack of light may result in health disorders and may lead eventually to depression.

It has long been known that 85% of all perceptions are of visual origin. Light is a mediator on the route from the visual object - eye - brain. For this function, humans need 25% of their overall energy. It is also known, that optical radiation does not serve only the visual process; it also regulates multiple organ functions and ways of behavior of the human body.

Light as a factor of happiness

It was discovered long ago that in addition to the retina's cones and rods, there are other light-sensitive receptors which, however, do not serve in optical perception but in the reception of the signal to be further transmitted as an optical stimulus to the pineal gland and hypophysis. Optical radiation some invisible radiation (UV and IR radiations) affect hormone processes in the body and control the internal clock of all living organisms, in daily, weekly and yearly rhythms.