TLDR Light exposure is crucial for health, helping prevent and treat illnesses.
The document reviews the impact of light exposure on human health, highlighting its therapeutic benefits and potential risks. It discusses advancements in lighting technology, such as LEDs, which improve energy efficiency and offer therapeutic applications like phototherapy for mood disorders and photodynamic therapy for cancer. Light exposure influences biological processes, including vitamin D synthesis, endocrine regulation, and circadian rhythms, but excessive light, especially at night, can disrupt these rhythms and lead to health issues like sleep disorders and cancer. The document emphasizes understanding the molecular mechanisms of light's effects to optimize health benefits and minimize harm. It also highlights the potential of photobiomodulation in treating conditions like psoriasis, alopecia areata, and fibromyalgia, and the role of light in cognitive and emotional health. Future advancements in phototherapy and optogenetics are expected to enhance treatment precision and efficacy.
33 citations
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January 2021 in “Aesthetic Surgery Journal” Low-Level Light Therapy (LLLT) is a safe and effective method for skin rejuvenation, acne treatment, wound healing, body contouring, and hair growth, but more well-designed trials are needed for confirmation.
60 citations
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November 2020 in “International Journal of Medical Sciences” NIR light therapy may effectively treat eye diseases and improve brain function without side effects.
8 citations
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October 2020 in “Lasers in Medical Science” LLLT helps treat hair loss by increasing blood flow, reducing inflammation, and stimulating growth factors.
520 citations
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January 2017 in “AIMS biophysics” Photobiomodulation therapy using red and near-infrared light can reduce inflammation and aid in healing various conditions.
8 citations
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October 2020 in “Lasers in Medical Science” LLLT helps treat hair loss by increasing blood flow, reducing inflammation, and stimulating growth factors.
February 2025 in “Journal of Nanobiotechnology” A new treatment using microneedles with black phosphorus and laser helps regrow hair effectively and safely.
August 2024 in “Journal of Clinical Medicine” Low-level laser therapy is the most supported treatment for hair loss, but other methods show promise.
4 citations
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February 2014 in “Proceedings of SPIE” Low-Level Light Therapy is effective for skin rejuvenation, wound healing, and hair growth, with mild side effects.
