Tattoos

I have no interest in getting a tattoo, but I know plenty of people who have them. I'd read about metal particles, but didn't realize that it wasn't the inks but the needles that were responsible. Caveat emptor.

“We tested around 50 ink samples without finding such metal particles and made sure that we hadn't contaminated the samples during sample preparation. Then we thought of testing the needle and that was our 'eureka' moment,” added Ines Schreiver, corresponding author and scientist at the Federal Institute for Risk Assessment.

"A deeper analysis showed that green, blue, and red tattoo inks contain a white pigment called titanium dioxide, which can wear away at the needle. Black ink, however, doesn’t contain this pigment and the needle wears down less.

"This discovery could help to explain why tattoos can occasionally cause allergic reactions in some people. As for the wider health implications of having a lymph node loaded with nanoparticles, that remains unclear for now. Currently, there's little to no evidence to suggest that tattoos are associated with any wider health problems, however, the researchers hope to investigate this avenue a little further before settling on any conclusion."

https://www.iflscience.com/getting-a-tattoo-can-have-a-strange-effect-on-your-body--53541?fbclid=IwAR1XVqFveCJsjWbQDRrbm48RL7gM8bcXapfpe5RtFCtHGm6ymEDvKtPh1oQ 

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