When your melatonin levels and sleep cycle go haywire, your risk goes up for a wide range of ailments, from depression to cancer.
Our various personal electronic devices emit blue light because it’s so bright. That’s the only way we can see those screens when the sun is shining. But we’ve started to have regular close-up nighttime exposure to this light only in the past 10 or 20 years, as a recent Gigaom story on the topic notes.
From our very good friends over at thejournal. ie