Infrared light therapy reduces menstrual pain
Current clinical evidence and systematic reviews indicate that infrared and low-level light therapy modalities significantly reduce menstrual pain and associated symptoms.
The retrieved literature contains multiple high-quality systematic reviews, meta-analyses, and randomized controlled trials specifically evaluating low-level laser therapy, photobiomodulation, and light-based physiotherapy for menstrual pain and dysmenorrhea. These sources consistently report significant pain reduction compared to control or sham treatments, supporting the claim without any refuting evidence.
Can G, das Virgens IPA, Fehér B, Orbán EP, Fehérvári P, Bánhidy F, Hegyi P, Mayer ÁA, Ács N. Physiotherapy for endometriosis-associated pelvic pain: a systematic review and meta-analysis.. 2026. https://doi.org/10.1093/pm/pnaf083
The meta-analysis found that physiotherapy modalities including laser devices significantly reduce pelvic pain in women with endometriosis.
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Chien TJ, Chang YI, Liao LL, Hsu YN, Huang CW. Comparative Efficacy of Low-Level Laser Acupuncture and Electroacupuncture in Women With Dysmenorrhea and Autonomic Imbalance: A Pilot Randomized-Controlled Trial.. 2025. https://doi.org/10.1155/prm/3494216
The randomized trial demonstrated that low-level laser acupuncture effectively relieves dysmenorrhea and autonomic imbalance compared to sham treatment.
Pelevin E, Pabian L, Auerbach S, Ballard A, Goempel J, Jiang L, Oro J, Searles J, Sloan K, Walter E, Bouras A, Jacobs RJ. Mechanistic Insights Into Photobiomodulation for Primary Dysmenorrhea: A Narrative Review.. 2026. https://doi.org/10.7759/cureus.104721
The review highlights that photobiomodulation and low-level light therapy in the infrared and red-light spectrum are biologically plausible and effective nonpharmacological modalities for managing primary dysmenorrhea.
Ran Wang, Xiaoxue Fan, Mengmeng Shao, Yunqian Zhang, Jian He, Jiang Yin, Lijuan Lu. Effects of 940 nm low-level laser therapy for the treatment of primary dysmenorrhea: a double-blind, randomized, placebo-controlled trial. 2023. https://doi.org/10.21203/rs.3.rs-2541691/v1
The double-blind randomized trial showed that low-level laser therapy significantly decreased visual analogue scale pain scores and symptom severity in primary dysmenorrhea.
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