World-weary travelers take heed: You should schedule a break before hopping on yet another flight to a distant time zone. A new study suggests that chronic jet lag shrinks the brain.
Temporary fatigue, drowsiness, and loss of concentration are typical symptoms of isolated bouts of jet lag (SN: 9/18/99, p. 189). Now, a report in the June Nature Neuroscience hints that more ominous consequences wait in the wings for airline flight crews who repeatedly cross many time zones.
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