Low-Level Laser And LED Therapy In Alopecia: A Systematic Review And Meta-Analysis

    October 2024 in “ Dermatologic Surgery
    Sofia Perez, Mounika Vattigunta, Colin Kelly, Ariel E. Eber
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    TLDR Low-level laser therapy helps increase hair density in androgenetic alopecia.
    This systematic review and meta-analysis evaluated the efficacy of low-level laser/LED therapy (LLLT) in treating various types of alopecia. The study included 38 studies with a total of 3,098 patients, primarily focusing on those with androgenetic alopecia. Results showed a significant increase in hair density for androgenetic alopecia patients after 4 to 26 weeks of LLLT compared to placebo, with standardized mean differences of 1.14 for treatments under 20 weeks and 1.44 for treatments over 20 weeks. However, due to insufficient statistical data, the efficacy of LLLT for other alopecia types could not be conclusively determined. The study concludes that LLLT is a promising treatment for androgenetic alopecia, but further research is needed to assess its effectiveness for other alopecia types.
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