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Creativity coach, writing and creative process instructor, speaker, author of Around the Writer's Block: Using Brain Science to Write the Way You Want (Penguin/Tarcher 2012) and Dancing in the Dragon's Den (Red Wheel Weiser), Teaching Artist at the Loft Literary Center.

Bedtime Reading Bad for Sleep? It Depends

Thank you to those of you who commented on my previous post to let me know that your basic Kindle or Nook e-readers are not backlit and therefore, not a source of blue light.

My apologies for making an incorrect assumption and lumping all e-readers in with tablets, computers, i-Phones and similar devices. If an e-reader is backlit, it is probably a source of blue light. If it is not, it probably isn’t.

My source mentioned that Barnes & Noble and Amazon both declined requests for interviews regarding the blue light issue. Since the Kindle Fire is backlit, it may be a source of blue light.

The ad for the Nook Simple Touch with Glowlight says its “breakthrough technology creates a soft glow optimized for low light reading… warm light illuminates entire screen evenly.” “Warm light” would suggest non-blue light, but some reviewers refer to the “blue Glowlight.”

I couldn’t find any product specifications that indicate whether the Glowlight technology emits blue light or not. Harvard Health Publications lists LED lights as a source of increased blue light and the Simple Touch does use LED lights.

Those of you with e-readers, please add your observations to the conversation. Which device do you use, do you know if it is a source of blue light and have you noticed any change in your sleep patterns when you use your e-reader?

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