Study Finds Surprising Amount of Tattoo Ink Contains Bacteria

A new study is highlighting some of the lesser-known risks involved with getting a tattoo, finding that a whopping 35 percent of tattoo ink sold in the United States is contaminated with bacteria. Researchers believe the evidence demonstrates a link between tattoo ink and human infections.

The study, which is the first of its kind, was published on Tuesday in the Applied and Environmental Microbiology science journal. In coming up with the findings, the research team tested 75 tattoo inks...