660 nm
Pulsed red
photobiomodulation
photobiomodulation
This case report follows a 5-year-old boy with autism spectrum disorder and a history of elevated urinary aluminum. Over a two-week window we collected serial first-morning urine specimens and measured toxic metals before, during, and after a short course of pulsed 660 nm photobiomodulation (PBM). What we recorded was a clear, time-locked rise in urinary aluminum that tracked the days light was applied — a pattern we have not seen described elsewhere, and one we are reporting precisely because it is unexpected.
We are publishing the observation, not a conclusion. A single case cannot tell us why the change occurred, and it does not establish that photobiomodulation moves metals. It does raise a question we think is worth measuring properly.
What stands out is the timing. Aluminum sat low and steady across two baseline mornings, then climbed across the days pulsed 660 nm light was applied, reaching roughly ten times baseline on Day 7, before easing back two months later. To our knowledge, a urinary-metal shift of this kind alongside photobiomodulation has not been reported before.
A mechanism worth asking about — not one we've shown. 660 nm light is absorbed by mitochondrial cytochrome c oxidase and shifts cellular bioenergetics. Whether that has any bearing on how the kidney handles a metal like aluminum is entirely unestablished. We raise it as a question, not an answer.
The number moved; the cause is open. A rise in urinary aluminum could reflect increased excretion, redistribution from tissue, ordinary day-to-day variability, or factors we did not control — diet, hydration, gut flora, urine pH. This design cannot separate those. The follow-up mercury and pH >8.0 are noted in the same spirit: observations, not explanations.
Why publish a single case at all. Because the pattern was clean, time-locked, and — as far as we can find — undescribed. Reporting it puts a testable question on the record for others to confirm or rule out.
We draw no conclusions from this case. We find it interesting, and we are reporting it because it has not been described before.
This is a single observation in one child. It is not evidence that photobiomodulation removes metals, "detoxifies," or treats autism spectrum disorder, and it should not be read as a treatment recommendation. Larger, controlled trials are needed to assess whether PBM has any real effect on metal handling or excretion. Until that work exists, the honest answer is that we have one curious data point and an open question.
This page is provided for educational and informational purposes and is a plain-language presentation of a peer-reviewed case report. It does not constitute medical advice, does not establish efficacy, and does not replace consultation with a qualified clinician. Photobiomodulation devices referenced in this work are used in research and educational contexts. Individual results are not implied or guaranteed.