The body modification trend has seen an uptick in people getting decorative tattoos. Tattoos have a long history of being used for not only decoration, but a symbol of status, determining ownership of slaves, and to punish criminals. Despite the long history, questions of tattoo safety still remain. Joining us is Dr. Bruce Katz , director of the Cosmetic Surgery & Laser Clinic at Mount Sinai Hospital, to discuss tattoo safety, removal and new uses in medicine.