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submitted 1 day ago* (last edited 1 day ago) by King@blackneon.net to c/science@mander.xyz

Study

The researchers discovered that once a tattoo is made, the ink rapidly travels through the lymphatic system and, within hours, accumulates in large quantities in the lymph nodes — key organs of the body’s defense system. Inside these nodes, immune cells called macrophages actively capture all types of pigment. This ink uptake triggers an inflammatory response with two phases: an acute phase lasting about two days after tattooing, followed by a chronic phase that can persist for years. The chronic phase is particularly concerning because it weakens the immune system, potentially increasing the susceptibility to infections and cancer. The study also showed that macrophages cannot break down the ink like they would other pathogens, wich causes them to die, especially with red and black inks, suggesting these colors may be more toxic. As a result, ink remains trapped in the lymph nodes in a continuous cycle of capture and cell death, gradually affecting the immune system’s defensive capacity.

The study found that tattooed mice produced significantly lower levels of antibodies after vaccination. This effect is likely due to the impaired function of immune cells that remain associated with tattoo ink for long periods. Similarly, human immune cells previously exposed to ink also showed a weakened response to vaccination.

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[-] vatlark@lemmy.world 102 points 1 day ago* (last edited 1 day ago)

In the study the longest they waited after tattooing the mouse before giving the vaccine was 2 months.

They made some connections with people that had tattoos for a much longer time. But I can't tell how meaningful those connections are.

This is well outside of my field.

Edit:

Also, it sounds like the tattooed mice were less responsive to the covid vaccine but more responsive to the Influenza vaccine.

[-] SendMePhotos@lemmy.world 12 points 1 day ago

... This is the internet. You can always be like the rest and pretend you know everything and are multi discaplined, instead of taking the proper, less fun, honest route.

[-] gusgalarnyk@lemmy.world 29 points 1 day ago

Why make this comment encouraging bad behavior? This feels like injected negativity for negativity sake. Idk man, be the change you want to see in your community.

[-] SendMePhotos@lemmy.world 4 points 23 hours ago

Because I am a sarcastic fuck.

[-] derek@infosec.pub 16 points 1 day ago

I agree with you in sentiment, however; I believe the comment you're replying to was intended as a joke.

[-] auraithx@lemmy.dbzer0.com 1 points 1 day ago

It was sarcasm nerd

[-] fartographer@lemmy.world 1 points 21 hours ago

As a triple MD of researchology and a minor in advanced bullshitterism, I can 100% confirm that the advice in this comment is the absolute healthiest way to interact with people on the Internet.

Also, while the mice were only tested for two months after the tattoo, researchers continued to track the health of the mice via phone calls and getting together for after work beers every third Tuesday of the month.

Source: I was probably one of the researchers or something.

this post was submitted on 28 Nov 2025
334 points (91.1% liked)

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