> White point adjustment doesn’t actually reduces the amount of blue light by that much Questions. After reading the comments I would like to ask about good e

> White point adjustment doesn’t actually reduces the amount of blue light by that much Questions. After reading the comments I would like to ask about good evidence/the state of knowledge for screen workers - What about the (energy rich) blue light from monitors? Is it dangerous for eyes, long term? - If the white point adjustment does not do much, why bother with tools like f.lux at all? As for myself, I've been using f.lux for years but even when I set it to a higher temperature because I'm watching a video I have no problems at all with sleep. I have not used an alarm clock to wake up in the morning in years. I do occasionally use one to take medicine - a chelator (DMSA) - every 4 hours during the night, but have no trouble getting back to sleep and wake up just as refreshed in the morning as if I had had uninterrupted sleep. The waking up, by the way, is all automatic, I don't need an alarm. My brain even considers whether I'm in a "chelator taking" period (1-2 weeks) or not, the day I start I also start waking up during sleep, to take the capsules, the day I stop I don't wake up any more. The brain is amazing and considers a lot of context, when you let it. Alarm-clock pressure to wake up in the morning IMO is a great obstacle to this self-regulation. I'm still recovering from heavy metal poisoning (lab test verified), I had lots of nights during the main part of the recovery where I had to sleep in two parts, approximately 0-3 and 6-10. I have found that the first few hours are the worst, but the last 1-2 hours of (natural, not alarm-limited) sleep seem to be of even greater importance for overall sleep quality. There is a HUGE difference between getting those last hours (or this last hour) or not. While I may superficially feel more clear and awake when I don't get them there is a feeling underneath that isn't right. I also have a late night espresso between 8 and 10 pm (of perfect Italian quality), no difference. And before anyone thinks "caffeine", I drink 3-5 (perfect) Italian style espressos per day. I cannot drink regular coffee or bad espresso. It isn't the caffeine, or my body would be satisfied with any coffee drink. I am not, when I can't get my "perfect espresso" I cannot replace it with "just coffee".