Apples Night Shift is no match for the complexities of sleep

Apple’s Night Shift feature, which it says “may help you get a better night’s sleep,” doesn’t appear to live up to its claim, according to new research. Because exposure to blue light affects the regulation of sleep cycles, the hope is that Night Shift, which filters blue light from screens after sunset, will make falling asleep easier. But as a recent study shows, sleep is weird and complicated, and a single phone feature likely won’t do much to combat sleepless nights.

The study, published in Sleep Health, tracked the sleep of 167 young adults for one week. People were divided into three groups: one that used their phones for an hour before bed with Night Shift turned on, one that did the same with Night Shift turned off, and one that...

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