Exposure to flashes of light the night before traveling may help reduce jet lag, study suggests

“This is fascinating to read in the original article. It has a good discussion of sleep patterns. “Temporal integration of light flashes by the human circadian system“   http://www.jci.org/articles/view/82306  Bill Chesnut, MDsystem.”

Exposure to flashes of light the night before traveling may help reduce jet lag, study suggests

The Wall Street Journal (2/8, Reddy, Subscription Publication) reports that research published in the Journal of Clinical Investigation suggests exposing someone to flashes of light the night prior to traveling may help reduce the likelihood that he or she will experience jet lag.

CNN (2/8, Grinberg) reports that in the study, participants slept in a “lab, where some were exposed to continuous light for an hour and others were exposed to a sequence of flashes of various frequencies for an hour.” Investigators found that “exposing people to two millisecond flashes of light, similar to a camera flash, every 10 seconds elicited two hours of change in circadian timing.”

STAT (2/8, Swetlitz) reports that “a couple of individuals in this group saw a shift in their internal clock of up to three hours.” Comparatively, study participants who were “exposed to continuous light for the hour experienced an average change to their circadian clocks of only about 30 minutes.”

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