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jet lag |
Also found in: Dictionary/thesaurus, Medical, Wikipedia, Hutchinson | 0.05 sec. |
jet lagPeriod of adjustment of biological rhythm after moving from one time zone to another, experienced as fatigue and lowered efficiency. It reflects a delay in the synchronization of changes in the level of blood cortisol, the major steroid produced by the adrenal cortex (see adrenal gland), with the local day-night cycle. Duration and severity depend on how much distance is covered in how little time. Travel by jet, after which the phenomenon may persist for some days, first made it noticeable, accounting for the name. |
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A better simulation of jet lag than that described in "Jet lag might hasten death in elderly" (SN: 11/25/06, p. For those who are susceptible, the potential hit from jet lag is serious enough that some companies will not let executives sign binding documents within 24 hours after getting off a flight through several time zones. Disruptions in circadian rhythm have been implicated in a variety of diseases and conditions from common jet lag to cancer. |
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jet lag
