Violet Light Therapy: Up-to-date evidence.

Examine Database: Violet Light Therapy

Health Condition/Goal	Health Outcome	Grade	Evidence	Effect
Depression	1 primary outcome	C	1 Study

1 primary outcome

C

1 Study

Can violet light therapy help with depression?

In this 4-week randomized crossover study in 57 adults in Japan with major depressive disorder, violet light therapy (a noninvasive treatment that uses violet light to stimulate brain activity) reduced depression symptoms compared to a placebo.

Depression Symptoms - Noda Y, Taniguchi K, Takano M, Mimura Y, Yanagisawa N, Hayano M, Kitahata R, Ogawa Y, Mimura M, Tsubota KViolet light photobiomodulation therapy for depression: A double-blind randomized crossover trial.J Affect Disord.(2025 May 1)