Sömnrytmer

Sömnrytmer, often referred to as circadian rhythms, are internal biological processes that regulate the sleep-wake cycle over a roughly 24-hour period. These rhythms are influenced by a master clock in the brain called the suprachiasmatic nucleus (SCN), which is located in the hypothalamus. Light is the primary external cue, or zeitgeber, that synchronizes these internal rhythms with the external environment. When light enters the eyes, it signals the SCN to promote wakefulness during the day and to prepare the body for sleep as darkness falls.

Disruptions to natural sömnrytmer can occur due to various factors, including shift work, jet lag, irregular sleep schedules, and exposure to artificial light at night. These disruptions can lead to a range of negative consequences, such as fatigue, impaired cognitive function, mood disturbances, and an increased risk of chronic health problems like obesity, diabetes, and cardiovascular disease. Maintaining a consistent sleep schedule, ensuring adequate exposure to natural light during the day, and minimizing artificial light exposure in the evening are key strategies for supporting healthy sömnrytmer. Understanding and respecting these biological rhythms is crucial for overall well-being and optimal functioning.