Oral Nicotinamide Reduces Actinic Keratoses in Adults with Sun-Damaged Skin ABSTRACT Background: Actinic keratoses (AKs) are skin lesions primarily caused by ultraviolet (UV) exposure. They are precancerous lesions and can develop into non-melanoma skin cancer. Exposure to UV radiation leads to the development of AKs by several mechanisms. UV radiation damages cellular DNA, depletes cellular […]
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