# The inner clock — blue light sets the human rhythm

Wahl S, Engelhardt M, Schaupp P, Lappe C, Ivanov IV · Journal of Biophotonics 12(12):e201900102 · 2019



## Key finding

Review of how short-wavelength light drives melanopsin signalling — the (smaller) light component of the screen problem.



[Read the paper](https://pubmed.ncbi.nlm.nih.gov/?term=The+inner+clock+—+blue+light+sets+the+human+rhythm)

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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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