Red light therapy (RLT) is being studied for its potential role in cancer care and in managing cancer-related symptoms. It uses low-energy red light (630–700 nm) to support cell regeneration and blood flow. RLT is not radiation therapy or chemotherapy and does not damage DNA; it works by stimulating mitochondria, the cell’s energy source, which can improve cell function, reduce inflammation and promote healing.
Still investigational
In cancer care, RLT is being explored mainly to relieve pain and inflammation from treatment side effects such as oral mucositis (mouth sores). Its use in cancer treatment remains investigational.
If you have cancer or a history of cancer, speak with your healthcare professional before considering red light therapy.
Source: City of Hope (cancercenter.com), photodynamic therapy overview, reviewed December 2023.
