Can tattoos protect your skin from the sun's harmful rays, or do they make things worse? A new study I conducted with colleagues suggests there may be cause for concern. We found that people with tattoos had a 29% higher risk of developing melanoma, a serious form of skin cancer often linked to ultraviolet (UV) exposure. However, tattoos did not appear to increase the risk of squamous cell carcinoma, another type of skin cancer related to UV damage. Although both cancers share a common cause,