Thursday, May 24, 2018

Evening use of light-emitting tablets may disrupt healthy sleep @ Study


Evening use of light-emitting tablets may disrupt healthy sleep @ Study 

Date: May 23, 2018

Source: Wiley

Summary: A new study reveals that evening use of light-emitting tablets can induce delays in desired bedtimes, suppress secretion of melatonin (the hormone that regulates sleep and wakefulness), and impair next-morning alertness. 

A new Physiological Reports study reveals that evening use of light-emitting tablets can induce delays in desired bedtimes, suppress secretion of melatonin (the hormone that regulates sleep and wakefulness), and impair next-morning alertness.

Nine healthy adults participated in a randomized and counterbalanced study comparing 5 consecutive evenings of unrestricted use of light-emitting tablet computers versus evenings reading from printed materials.

“These findings provide more evidence that light-emitting electronic devices have biological effects,” said co-author Dr. Jeanne Duffy, of Brigham and Women’s Hospital and Harvard Medical School. “Using light-emitting electronic devices in the late evening can postpone our decision to go to sleep, and make us more sleepy the next morning.” 


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