This question has been answered by Jim Ashley-Down, managing director of Waldmann Lighting.
The hormone cortisol is produced in the body in the morning. Cortisol stimulates the metabolism and readies the body for the day. The first morning light suppresses the sleep hormone melatonin and supports the production of cortisol. Biodynamic lighting helps this process in the absence of daylight.
As the day progresses the levels of cortisol in the body naturally decrease. By mimicking the balance of daylight in the middle of the day, biodynamic lighting helps regulate this decrease to prevent people becoming too tired too quickly. By mid-afternoon the production of cortisol in the body has decreased significantly, but the body’s production of the sleep hormone melatonin is not yet in play. Biodynamic lighting supports this transitional period by means of a neutral mixed light and gradually reduced lighting levels.
Melatonin makes people tired and promotes a good night’s sleep. With biodynamic lighting during the day, the body is assisted to produce good melatonin levels at the correct time of day. This helps a person sleep well and wake up rested and productive the next day. Biodynamic lighting supports this transition to the rest phase of our biological clocks through reduced brightness and a more relaxing warm white light.
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