Tattoos+and+Risks

https://ed.ted.com/lessons/what-makes-tattoos-permanent-claudia-aguirre https://www.livescience.com/60503-tattoo-ink-body.html https://tatring.com/getting-tattooed/Tattoos-Health-Risks-and-Toxic-Effects https://www.cnet.com/news/this-is-why-tattoos-are-permanent-macrophages/ https://www.smithsonianmag.com/smart-news/tattoos-can-be-much-more-skin-deep-180964881/ http://www.dermatologyadvisor.com/dermatology/inflammatory-tattoo-reaction/article/691506/

Macrophages are involved in both tattoos and kidney disease, but what kind? (Remember correlation is not causation.) https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2922007/