døgnrytmer

Døgnrytmer, also known as circadian rhythms, are the natural, internal processes that regulate the sleep-wake cycle in humans and other organisms. These rhythms are approximately 24 hours long and are influenced by a variety of factors, including light, temperature, and hormones. The master clock for these rhythms is located in the suprachiasmatic nucleus (SCN) of the hypothalamus in the brain. The SCN receives input from the retina, which detects light, and from other parts of the body, such as the digestive system and muscles. This information is then used to regulate the release of hormones, such as melatonin, which helps to control sleep and wakefulness. Disruptions to døgnrytmer can lead to a variety of health problems, including sleep disorders, mood disorders, and metabolic disorders. Maintaining a consistent sleep schedule and avoiding exposure to bright light in the evening can help to regulate døgnrytmer and improve overall health.