Evening use of light-emitting eReaders negatively affects sleep, circadian timing...
I still take melatonin and am still finding ways to let less light into this room while I sleep. Follow the link to read more of the study. It costs so little, and what if it does help my Tamoxifen?
" . . .We found that the use of these devices before bedtime prolongs the time it takes to fall asleep, delays the circadian clock, suppresses levels of the sleep-promoting hormone melatonin, reduces . . ."
Pediatrics: Smartphone in Bedroom Is Not So Smart Choice MEDPAGE 1/05/2015