Q: Do I really need to stop using my phone before bed? (Jennifer E.)
A: Hello Jennifer, the blue part of the light spectrum boosts mood and energy during daytime, but it can throw off your circadian clock in the hours leading up to bedtime. Most of us are getting more blue-light exposure than ever because of smartphones, laptops, and LED light bulbs, which are bluer than their less energy-efficient predecessors. You could cut down on late-day screen time, but if that’s not realistic, try wearing amber-tinted glasses in the evening,
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