# Effects of light on human circadian rhythms, sleep and mood

Blume C, Garbazza C, Spitschan M · Somnologie 23(3):147–156 · 2019



## Key finding

Accessible review of how timing, intensity and spectrum of light set the clock and affect sleep.



[Read the paper](https://pubmed.ncbi.nlm.nih.gov/?term=Effects+of+light+on+human+circadian+rhythms,+sleep+and+mood)

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Educational summary of published research, not medical advice. Screening scores are not diagnoses. If a score is elevated or you feel unwell, talk to a clinician.

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