If you think that only human beings experience this rhythm, you are wrong.Įvery animal, plants and other tiny microbes experience circadian rhythms that depend on external light cues. The most common of all circadian rhythms is staying awake in the mornings and sleeping at night. The primary stimulus for this change is external light. One could say that the circadian rhythms are the natural behavior pattern changes, mental and physical changes that a person goes through every day. Investigations on sleep disorders for over the last decade or more show that a complex network of neurobiological factors is responsible for the genesis of circadian rhythms in people and their subsequent disorders. It depends mainly on your clock genes, several hormones, and other intrinsic factors. The kind of circadian rhythm disorder that might affect you does not depend on your age or your geographic location. Research shows that several sleeping disorders trouble people all across the globe. Unlike insomnia, the affected individuals experience a normal quality of sleep when they listen to their inner clocks. Circadian rhythm disorders often cause bodies to only respond to their internal biological clocks. People with any circadian rhythm disorder suffer from lack of sleep, too much sleep or simply not enough sleep at the right time. It affects almost all biological processes through disruption of sleep-wake cycles in individuals. Over 70 million adults in the US now suffer from one kind of circadian rhythm disorder or another.

Circadian rhythm disorders are relatively common among individuals of all age groups, professions, and health conditions across the US.

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