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Study examines impact of smartphones on sleep

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From the Mayo Clinic press release via ScienceDaily: Smartphones and tablets can make for sleep-disrupting bedfellows. One cause is believed to be the bright light-emitting diodes that allow the use of mobile devices in dimly… 

Study links poor sleep to post-heart attack PTSD

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From the Columbia University Medical Center press release via EurekAlert!: Clinicians have long speculated that poor sleep may be a mechanism involved in the higher risk of further cardiac events or death among those with…