Circadian Rhythms, Jet Lag, and Chronobiotics: An Overview

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Abstract
This overview considers the origins of jet lag in terms of altered circadian rhythmicity. The properties required of a chronobiotic—an agent to cause phase adjustment of the body clock—are discussed, and an account is given of the major candidates at the present time: light, melatonin, activity, and benzodiazepines. It is concluded that current knowledge indicates that a combination of factors is likely to be most effective.