Many articles on the internet write about melatonin and its effects, making you tired. A lot of articles also point out how the use of devices before going to bed in modern days likely decrease melatonin production. Therefore, making it harder to fall asleep. But this information is only about the process of getting to sleep, before we are actually sleeping.
A recent Harvard Medical article 1 states:
High exposure to bright, artificial outdoor lights during the night may result in sleepless nights for older adults.
Referring to a publication on Nov. 15, 2018, in the Journal of Clinical Sleep Medicine.
- many people nowadays, use their mobile devices in bed prior to going to sleep;
- modern cities or houses have (street) lights that are always enabled at night;
- ignoring the phase of falling sleep;
- focusing only on the time we are asleep already, so during the actual sleep cycles.
Does a darker room with less or no (artificial) light pollution improve sleep quality, with all associated health benefits as a result? In other words: Does light pollution, while asleep decrease the sleep quality or does light pollution only negatively affect the phase of “falling asleep”?
I wasn't able to find any studies or information regarding sleep quality in relation to light pollution during sleep. Were such studies performed? Are there specific moments when light pollution affects sleep quality the most, for example during REM-sleep or in a specific sleeping phase?