Recent research has raised questions about a possible association between tattoos and certain cancers, particularly lymphoma. These findings have attracted significant media attention. This guide explains what the research actually shows, what it does not yet prove and how to put the findings in context before making a decision about getting tattooed.
What the research has found
A 2024 study published in eClinicalMedicine (the Lancet) and a 2025 twin study published in BMC Public Health both reported associations between tattooing and elevated rates of certain cancers, primarily malignant lymphoma and some skin cancers. The 2024 Swedish study found tattooed individuals had approximately 21% higher adjusted risk of overall lymphoma compared with non-tattooed individuals. The 2025 Danish twin study found a roughly 62% higher skin cancer risk and up to three times higher lymphoma risk associated with large tattoos.
The proposed mechanism is that tattoo ink particles migrate through the lymphatic system and accumulate in lymph nodes, where they can trigger chronic inflammation over years and decades. Some tattoo inks contain chemicals classified as potentially carcinogenic by the International Agency for Research on Cancer, including polycyclic aromatic hydrocarbons in black inks and metals such as nickel, chromium and cobalt in coloured inks.
What the research does not prove
Critically, these studies show association rather than causation. An association between two factors does not establish that one causes the other. Multiple researchers involved in these studies have emphasised that the findings require further investigation before definitive conclusions can be drawn. Confounding factors, including lifestyle behaviours that may correlate with having tattoos, are difficult to fully control for across population studies.
There are also conflicting findings in the literature. A December 2025 study published in the Journal of the National Cancer Institute found that people with three or more large tattoos had a 74% lower risk of melanoma compared with non-tattooed individuals. This does not contradict the lymphoma findings but illustrates that the picture is complex and research is at an early stage. The scientific consensus at the time of writing is that the evidence of increased cancer risk from tattoos is suggestive but not conclusive.
Association is not causation
The studies show that people with tattoos have higher rates of certain cancers in population-level data. This does not mean tattoos cause those cancers. Other shared characteristics of tattooed populations may contribute. Researchers are clear that causality has not been established.
Lymphoma is rare overall
Even if the association reflects a real elevated risk, lymphoma is uncommon in the general population. A 21% increase in relative risk applied to a rare outcome produces a small absolute risk increase. Context matters when interpreting percentage figures from research.
Ink quality and regulation matter
The EU introduced stricter regulation of tattoo ink ingredients in 2022 restricting several potentially harmful substances. Inks meeting current EU REACH standards contain fewer of the chemicals associated with concern in the research. Choosing a studio that uses quality regulated inks is relevant to any risk consideration.
More research is underway
Several large-scale prospective studies are now tracking tattooed populations over time to produce better evidence on the causal question. The current findings are preliminary signals that have triggered appropriate scientific investigation rather than established conclusions that should drive public health guidance.
What this means if you are considering a tattoo
The current research does not establish that tattoos cause cancer. However, there is emerging evidence of a possible association with certain cancers that warrants awareness. People considering tattoos, particularly very large or heavily coloured pieces, may wish to factor this emerging research into their thinking. Gravity Tattoo uses quality inks and operates to full UK hygiene and safety standards. If you have existing health conditions that affect your immune system or lymphatic function, discussing your situation with your GP before booking is sensible.
Questions about tattoo safety before booking?
Our Leighton Buzzard artists are happy to discuss any concerns before you commit to a booking.
Book a ConsultationFor full studio details and to book a consultation, Visit our tattoo preparation page to book a consultation with one of our Leighton Buzzard artists.
More from the Tattoo Preparation Guide
This article is part of our Tattoo Preparation Guide, covering every health and safety question clients ask before getting tattooed. Browse every guide at our Tattoo Preparation Guide hub.
Explore related health topics including tattoo safety, ink allergies and medical conditions. Find every preparation guide at our Tattoo Preparation Guide hub.