Girls With Tattoos

 A study published in the American Journal of Human Biology uncovered that tattooing serves to inoculate the immune system. There are two reasons behind this. One is that they have less reduction in immunoglobulin A. The second is that getting a tattoo stimulates an immune response. Immunoglobulin A is an antibody that helps the immune, gastrointestinal, and respiratory systems.

Tattoos also stimulate and strengthen the immune response. When the immune system detects a foreign invader in your body it sends antibodies to attack them. This happens when you get a tattoo. Your body attacks the foreign invader (tattoo ink), which is why swelling can occur. Eventually your body accepts the ink and you begin to heal. Over this time the immune system becomes stronger through its efforts to combat the ink.