Jet lag (or "jet-lag") is a physical condition caused by crossing multiple time zones during flight. The condition is generally believed to be the result of disruption to the circadian rhythms (ie. the "light/dark" cycle) of the body. It can also be exacerbated by experiencing sudden changes in climate or seasonal conditions, as well as the low humidity commonly experienced in the cabin of an aircraft.
Characteristic symptoms of jet lag include:
- Fatigue
- Disorientation and/or grogginess
- Nausea and/or upset stomach
- Headaches and/or sinus irritation
- Insomnia and/or highly irregular sleeping patterns
- Dehydration and loss of appetite
- Irritability
- Irrationality
Recent research shows that a pineal hormone, melatonin, is potentially
effective in prevention and treatment of jet-lag. It appears to be safe in short term use [1]
A lot of remedies of various nature are marketed but rarely effective. Their safety has not been scientifically established.
The condition of jet lag generally lasts a few days or more, and medical experts have deemed that a recovery rate of "one day per time zone" is a fair guideline. Sleep, relaxation, moderate exercise and sensible diet seem to be the simplest recovery agents.
Prevention and recovery
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