From the Guidelines
LED light therapy does not exacerbate malignancies (cancer) and is generally considered safe for use in various applications, including cosmetic and therapeutic purposes. The most recent and highest quality study, published in 2024 1, found no significant association between phototherapy, which includes LED light therapy, and the development of childhood cancers, including malignant melanoma, non-Hodgkin's lymphoma, and leukemias. While there were some concerns raised about potential photo-oxidative injury or superficial skin DNA damage, these risks are considered minimal and likely inconsequential in most cases.
Key points to consider:
- LED light therapy is not a treatment for cancer and should not be used as such
- It is primarily used for cosmetic purposes or to treat certain skin conditions like acne or signs of aging
- The treatment works by stimulating collagen production and increasing blood circulation in the skin, but these effects do not extend to encouraging cancer growth
- If you have any concerns about skin changes or potential malignancies, always consult a healthcare professional for proper diagnosis and treatment
- Early detection and proper medical care are key in dealing with any potential malignancies
It's also important to note that the use of blue-green LED devices, like those used in phototherapy, do not pose a significant risk of cancer development, according to the 2024 study 1. However, as with any medical treatment, it's essential to follow proper guidelines and consult with a healthcare professional to ensure safe and effective use.
From the Research
LED Light Therapy and Cancer
- The current evidence suggests that LED light therapy may not exacerbate malignancies (cancer) 2, 3.
- Studies have shown that low-level light therapy (LLLT) with red light does not promote tumor growth in mice with pre-existing malignancies 2.
- A single red light-emitting diode (LED) irradiation does not increase tumor volume in breast cancer-bearing mice 3.
- In fact, some studies suggest that LED light therapy may have anti-tumor effects, such as inducing autophagy in colon cancer cells 4 and inhibiting the M2 polarization of cancer-associated macrophages in colon cancer 5.
- LED-based photodynamic therapy has also shown promising results in reducing the viability of breast cancer cells 6.
Mechanisms of LED Light Therapy
- The mechanisms of LED light therapy on cancer cells are not fully understood, but studies suggest that photoreceptors such as Opsin 3 may play a role in mediating the effects of LED light on cancer cells 4.
- LED light therapy may also affect the tumor microenvironment, including tumor-associated macrophages, which can contribute to cancer progression 5.
Safety and Efficacy
- The safety and efficacy of LED light therapy for cancer treatment are still being investigated, and more studies are needed to fully understand its effects 2, 3.
- However, the current evidence suggests that LED light therapy may be a safe and potentially effective adjunctive treatment for cancer, particularly when used in combination with other therapies 6.