Shining specific colors of light on the heads of stressed rats helps them enjoy sweet water more again, making them act more like happy, unstressed rats.

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Evidence from Studies

Supporting (1)

12

Community contributions welcome

12

Transcranial Photobiomodulation Modulates Oxidative Stress Biomarkers and Complex IV Activity in Anhedonic-Like Behavior

Randomized Controlled Trial

Animal

2026 Feb 21

Scientists gave stressed rats special light therapy on their heads, and the rats started enjoying sugary water again—just like happy, unstressed rats. This means the light helped fix their lack of pleasure.

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No contradicting evidence found

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Source Study

Transcranial Photobiomodulation Modulates Oxidative Stress Biomarkers and Complex IV Activity in Anhedonic-Like Behavior

Score: 12

DOI: 10.1007/s11064-026-04681-2

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