evidence: Most skin cancers are a result of exposure to the UV rays in natural sunlight. [...] Because UV rays don’t penetrate deeply into the body, they have not been found to cause cancer in internal organs. However, some studies have shown possible links between UV rays and some other cancers, including Merkel cell carcinoma (a less common type of skin cancer) and melanoma of the eye. [...] Skin Cancer Foundation. Sun protection. Accessed at https://www.skincancer.org/skin-cancer-prevention/sun-protection/ on June 26, 2024.