Dygnsrytm

Dygnsrytm, also known as the circadian rhythm, is a roughly 24-hour cycle that influences many biological processes in living organisms, including humans, animals, and plants. This internal biological clock is primarily controlled by the suprachiasmatic nucleus (SCN) in the brain, which receives signals from the eyes about light exposure. Light is the most potent environmental cue, or zeitgeber, that helps to synchronize the dygnsrytm with the external day-night cycle.

The dygnsrytm regulates a wide range of physiological and behavioral patterns. In humans, it influences sleep-wake cycles, body temperature, hormone release (such as melatonin and cortisol), appetite, and cognitive functions. Disruptions to the dygnsrytm, caused by factors like shift work, jet lag, or prolonged exposure to artificial light at night, can lead to sleep disorders, mood disturbances, metabolic issues, and an increased risk of chronic diseases. Maintaining a regular sleep schedule and consistent exposure to natural light during the day are crucial for promoting a healthy dygnsrytm. Research into the dygnsrytm continues to uncover its complex mechanisms and its profound impact on overall health and well-being.