Light therapy uses ultraviolet and other types of light to treat a wide range of illnesses and medical and emotional problems. Almost anything from skin problems to emotional distress and depression can be at least helped by light therapy. But as with most medical and alternative therapies, there are some disadvantages to light therapy.
It is widely known and acknowledged by the medical community that ultraviolet light is damaging to the skin. It breaks down vitamins A and C in the skin, and can damage the skin’s collagen. Some genetic damage has also been seen with extended exposure to UV.
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Blue light is also used in some light therapy; unfortunately, blue light can cause breaks in cellular DNA. While the cells can usually repair themselves, research has shown that cancer can easily develop in damaged cells like those injured by blue light exposure.
