this post was submitted on 28 Nov 2025
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Science

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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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[–] Wubwub@lemmy.zip 17 points 8 hours ago (2 children)

The anti tatto crowd licking their lips over this one.

[–] fu@libranet.de 11 points 8 hours ago (2 children)

@Wubwub anti tattoo crowd? Like fundamentalist Baptists?

[–] thymos@discuss.tchncs.de 3 points 8 hours ago (2 children)

I suppose I would be in that crowd. I'm an atheist, but I think the whole tattooing thing is kinda stupid. To each their own of course, I don't care if anyone gets a tattoo, but the culture around it annoys me and I think it's a waste of one's body. I do like some of the art styles, but why not just print it on a shirt and wear it?

That being said, I think it's petty bad if it turns out the ink causes a higher risk of disease. Like with cigarettes in the past people weren't informed about the consequences before making their choices. That sucks and I don't wish it on anyone.

[–] otter@lemmy.dbzer0.com 11 points 7 hours ago

It's good that you've expressed misconception as the source of this opinion, and admitted to your lack of understanding. The rest of the work could fall in nicely, if you put the effort forth. I'll give ya one for free: "the culture around it" isn't some singular entity, but a varied and colorful amalgam of countless inspirations, backgrounds, beliefs, reasons, etc., and the only thing that oversimplifying does here is stunt your personal growth.

You got this. 🤘🏼

[–] leftzero@lemmy.dbzer0.com 2 points 52 minutes ago

Like with cigarettes in the past people weren't informed about the consequences before making their choices.

Yeah, but the tobacco cartels had performed studies which clearly demonstrated how absolutely horrible their shit was and not only not made them public, but used them to maximise addiction (and cancer, as a side effect they didn't give a single shit about).

I very much doubt the tattoo industry has ever studied anything.

[–] rabber@lemmy.ca -2 points 6 hours ago* (last edited 6 hours ago)

I'm a pantheist and think that tattoos are just another form of self harm

My gf has tattoos and I don't mind them but I wish she wouldn't get any more. Impossible to find a girl without tattoos who would date me anyway lol I tend to attract the alternative crowd and basically everyone I'd be into has them so it is what it is

[–] UnderpantsWeevil@lemmy.world 8 points 6 hours ago (1 children)

It's just tiresome to hear these hyperventilating articles without any real measure of the degree of risk or long term consequences.

[–] Wubwub@lemmy.zip 2 points 6 hours ago

Exactly, I understand the concept of the harm they are talking about but they don't really give much exact examples of the degree of harm its a total nothing burger of an article