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This is a nice study published in Nature Neuroscience that says that light-at-night paradigm in mice, induced depressive-like behaviors without disturbing the circadian rhythm. The controls seem reasonable and affect of correlation believable.

However I am not sure about the "without disturbing circardian rhythm" part because study [0] concluded that blue light acutely causes behavioral arousal (awakeness), whereas green wavelengths promote sleep. But note that here they measured time it took mice to fall asleep was ~15 mins for blue light vs 5-10 mins for green and this was their comparison range.

Another interesting study found blue light exposure leads to craving for sugar in mice[1]. Correlations are easy to find.

[0] https://journals.plos.org/plosbiology/article?id=10.1371/jou...

[1] https://medicalxpress.com/news/2019-07-blue-night-consumptio...