Photobiomodulation of the Microbiome (Mouse Study, 2019)
Mouse study reporting abdominal red/NIR light changed gut microbiome composition.
What this study looked at
This preclinical study examined whether abdominal photobiomodulation (red 660 nm and near-infrared 808 nm) could alter the gut microbiome in mice.
Main finding
The microbiome composition shifted after treatment, suggesting light exposure can influence gut microbial patterns in an animal model.
How to interpret it
This supports a plausible mechanism, but it is not proof of clinical benefit in humans with gut symptoms.