Reading books with a tablet computer at night can ruin your sleep

Since many in our world gradually cease to read paper books and electronic media on the move, you may have to give up the habit of reading before bed. It is believed that the glare screen tablet prevents natural production of hormones that promote falling asleep.

Two hours of screen-reader devices like the iPad at maximum brightness is sufficient to suppress the production of normal nocturnal melatonin - a key hormone for human "internal clocks" or circadian rhythm. It melatonin tells the body that it was night, and causes drowsiness. The delay of the signal interfere with the process of falling asleep. If read with bright screen for many years, it can lead to disruption of the circadian rhythm, which in turn adversely affect health.

via factroom.ru