Researchers found people with tattoos face a 29% increased melanoma risk compared to those without tattoos. The study examined 2,880 melanoma cases and matched controls aged 20 to 60. Among respondents, 22% of melanoma patients had tattoos versus 20% of controls. The risk remained elevated even after adjusting for sun exposure and other known factors. People tattooed for 10 to 15 years showed the highest risk at 67% increase. Tattoo inks contain carcinogenic chemicals including polyaromatic hydrocarbons in black ink and aromatic amines from colored pigments. Only 30% of melanomas occurred at tattoo sites, suggesting systemic effects rather than localized damage. (Story URL)
