Question: what is the greatest risk factor for skin cancer?
Answer: Ultraviolet (UV) light exposure. Exposure to ultraviolet (UV) rays is thought to be the major risk factor for most skin cancers. ...  Having light-colored skin. ...  Being older. ...  Being male. ...  Exposure to certain chemicals. ...  Radiation exposure. ...  Previous skin cancer. ...  Long-term or severe skin inflammation or injury.