New research involving mice reveals that tattoo ink particles rapidly migrate into lymph nodes within minutes of application and remain detectable for months afterward. The study found that the pigments triggered the death of immune cells, led to chronic inflammation, and may impair the body’s response to vaccines, including an mRNA-based COVID-19 shot. Scientists warn the findings could have implications for long-term immune function in people with tattoos. The results highlight a potential link between tattoo pigments and lasting immune system changes.


Mouse research shows tattoo pigments move into lymph nodes within minutes and persist for months Ink triggered immune-cell death, chronic inflammation and weakened response to an mRNA COVID shot ...