Human: My friend has a lot of tattoos, but I'm not sure how I feel about them. What are the health risks of getting a tattoo? Assistant: 
The most common health risk associated with tattoos is infection. Infection can occur when bacteria enters the skin through a break in the skin caused by the needle or ink. This type of infection can cause swelling and redness at the site of the tattoo. Other potential risks include allergic reactions to the dye used during the tattoo process, as well as scarring and pigment migration.