IARC/WHO: night shift work — which chronically disrupts sleep — is classified a Group 2A probable carcinogen
The evidence is convergent. Multiple independent sources reach the same conclusion, the underlying mechanism is well-characterized, and even the field's most cautious voices treat it as worth doing.
IARC/WHO: night shift work — which chronically disrupts sleep — is classified a Group 2A probable carcinogen
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the World Health Organization decided to classify any form of nighttime shiftwork as a probable carcinogen their words not mine and the proof of evidence that is required by the World Health Organization to make such a statement usually has to be astronomical and that data is now I think very well put in place
And the link between the lack of sleep and cancer is now so strong that, recently, the World Health Organization decided to classify any form of nighttime shift work as a probable carcinogen.
10 minutes of bright outdoor light within the first hour of waking anchors the circadian phase and improves sleep onset that night.
Morning sunlight exposure shifts the cortisol awakening response forward, improving daytime alertness.
Long-term morning sunlight reduces age-related macular degeneration risk.
Sleep regularity predicts all-cause mortality more strongly than sleep duration.
Tracking deep sleep on a wearable accurately reflects EEG-measured slow-wave sleep.
Caffeine has a half-life long enough that consumption after 2pm measurably degrades deep sleep in slow metabolizers.