There Has Been an Explosion of Colon Cancer Among People Generally Considered Too Young

 4/6/26 Science Alert:

Tattoos are generally considered safe, but growing scientific evidence suggests tattoo inks are not biologically inert. The key question is no longer whether tattoos introduce foreign substances into the body, but how toxic those substances might be and what that means for long-term health.

Tattoo inks are complex chemical mixtures. They contain pigments that give color, liquid carriers that help distribute the ink, preservatives to prevent microbial growth, and small amounts of impurities.

Many pigments currently in use were originally developed for industrial applications such as car paint, plastics, and printer toner, rather than for injection into human skin.