Evidence indicates that exposure to artificial bright light during the night-time suppresses melatonin secretion, increases sleep onset latency and increases alertness. Chronic ALAN exposure can cause circadian rhythm misalignment which may have negative effects on the psychological, cardiovascular and/or metabolic functions.
Read MoreThe future’s orange: City considers amber street lights
The city of Dunedin, the second largest on the south island of New Zealand, is exploring the possibility of installing amber LED lighting which will look similar to the current low-pressure sodium lighting.
Read MoreNew generation of streetlights could damage eyesight and disrupt sleep
It also raised concerns about the increasing use of LED lights on new cars, suggesting that they risked dazzling oncoming drivers – especially if they are elderly.
Read MoreLED Lights: The Dark Side
“I used to like to lie in bed at night and look at the sky.”
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