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The Evidence, Graded by Condition
Every clinical claim carries a PMID. Grades reflect trial quality and replication, not marketing.
Red light therapy evidence varies sharply by condition: skin, hair loss, wound healing, and knee osteoarthritis carry controlled-trial support; sleep, psoriasis, and mood are early; weight loss and testosterone claims lack credible support at consumer-device doses. Each page grades the evidence and cites the underlying studies.