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General Overview Health Authority Overview

5 Health Benefits Of Red Light Therapy

Source publication · 2025 · uclahealth

Research Summary

UCLA Health discusses five possible applications of photobiomodulation. Its article is public health information, not a clinical trial or systematic review. The areas below describe research interests rather than guaranteed outcomes.

Who Or What Was Studied?

The overview draws on different populations and devices; it has no single study population, sample size or treatment protocol.

What Did The Research Show?

  • Skin ageing: UCLA describes research into visible skin changes.
  • Hair regrowth: Its discussion concerns pattern hair loss, rather than every cause of shedding.
  • Acne: It highlights a small study and discusses combined light treatments.
  • Cognition: It references exploratory research in people with dementia.
  • Pain: It discusses condition-specific findings and notes that relief may not persist after treatment ends.

A closer look at the cited cognition trial adds important context. Nizamutdinov and colleagues randomised 60 people with mild to moderate dementia to active or sham treatment; 57 completed the trial. The protocol used a 1060–1080 nm helmet for six minutes twice daily over eight weeks. This corrects the overview’s less precise daily-treatment description. Cognition trial

The active group’s average MMSE score rose by 4.8 points, compared with 1.4 points in the sham group. These are within-group changes; the reported within-group significance does not itself establish a statistically significant difference between treatments. This short trial cannot establish lasting benefit or equivalence with a different device. Trial results, Table 1 and statistical methods

Limitations And Interpretation

Piri Red’s interpretation: this overview is a starting point for reading, not a treatment protocol or evidence that a particular Piri Red product delivers these outcomes. The underlying evidence for all five areas has not been independently reviewed here. Device-specific advice belongs with a qualified clinician.

Source

UCLA Health — 5 health benefits of red light therapy, 30 April 2025. Website byline: uclahealth.

Supplementary source check: Nizamutdinov D et al. Transcranial Near Infrared Light Stimulations Improve Cognition in Patients with Dementia. Aging and Disease. 2021;12(4):954–963. DOI: 10.14336/AD.2021.0229. This DOI identifies the cited trial, not the UCLA article.