vuorokausikello

A vuorokausikello, meaning "circadian clock" in Finnish, refers to the internal biological clock found in most living organisms that regulates daily rhythms. This internal timing system, also known as the circadian rhythm, influences a wide range of physiological processes, including sleep-wake cycles, hormone release, body temperature, and metabolism. The vuorokausikello is primarily driven by genetic factors and is synchronized with the external light-dark cycle. In mammals, the master clock is located in the suprachiasmatic nucleus (SCN) of the hypothalamus in the brain. Light detected by the eyes signals the SCN, which then adjusts the body's internal timing accordingly. Disruptions to the vuorokausikello, caused by factors like shift work, jet lag, or irregular sleep patterns, can lead to various health problems, including sleep disorders, metabolic issues, and an increased risk of certain chronic diseases. Understanding and maintaining a healthy vuorokausikello is crucial for overall well-being.