How exposure to light in the evening affects mood and the circadian clock | Satchin Panda

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Modern environments interfere with normal brain signals that induce sleep. For example, daytime work environments are often low light, inducing sleepiness. But bright lights from televisions or shift work environments in the evening or nighttime impair the release of melatonin, a hormone that promotes sleep, inducing wakefulness. The end result is an upside-down sleep schedule in which circadian rhythms and gene expression in the body become desynchronized. In this clip, Dr. Satchin Panda describes the effects of inappropriate light signals and discusses strategies to mitigate their effects.

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Circadian rhythm Videos