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Researchers from Lund University in Sweden found that tattooed individuals had a 21 percent higher risk of lymphoma, compared to people without tattoos.
Lymphoma is a type of cancer than affects the white blood cells, which are crucial for fighting infections.
The link is thought to lie with carcinogenic chemicals in the tattoo ink. When it is injected into the skin, it is be interpreted as something foreign and the immune system is activated, causing a low-grade inflammation in the body which can trigger cancer.
Some 46 percent of 30 to 49 year-old Americans have at least one tattoo, while 22 percent of all ages, on average, have more than one.
The researchers identified people with lymphoma aged between 20 and 60 using population registers, and then matched them with a control group of the same sex and age, but without a diagnosis of lymphoma.
The participants were then given a questionnaire about lifestyle factors to see if they were tattooed or not.
Around 1,400 of people with lymphoma answered the questionnaire, as well as 4,193 people in the control group.
In the group with lymphoma, 21 percent (289 people) were tattooed, while 18 percent (735 people) were tattooed in the control group.
'After taking into account other relevant factors, such as smoking and age, we found that the risk of developing lymphoma was 21 percent higher among those who were tattooed,' said Christel Nielsen, the researcher at Lund University who led the study.
The researchers had theorized that the size of the tattoo might impact the risk of lymphoma, and thought that a full body tattoo might be linked to a higher chance of cancer.
Tattoos may raise the risk of a deadly cancer 20%, shock study warns
Lymphoma is a type of cancer than affects the white blood cells, which are crucial for fighting infections.
The link is thought to lie with carcinogenic chemicals in the tattoo ink. When it is injected into the skin, it is be interpreted as something foreign and the immune system is activated, causing a low-grade inflammation in the body which can trigger cancer.
Some 46 percent of 30 to 49 year-old Americans have at least one tattoo, while 22 percent of all ages, on average, have more than one.
The researchers identified people with lymphoma aged between 20 and 60 using population registers, and then matched them with a control group of the same sex and age, but without a diagnosis of lymphoma.
The participants were then given a questionnaire about lifestyle factors to see if they were tattooed or not.
Around 1,400 of people with lymphoma answered the questionnaire, as well as 4,193 people in the control group.
In the group with lymphoma, 21 percent (289 people) were tattooed, while 18 percent (735 people) were tattooed in the control group.
'After taking into account other relevant factors, such as smoking and age, we found that the risk of developing lymphoma was 21 percent higher among those who were tattooed,' said Christel Nielsen, the researcher at Lund University who led the study.
The researchers had theorized that the size of the tattoo might impact the risk of lymphoma, and thought that a full body tattoo might be linked to a higher chance of cancer.
Tattoos may raise the risk of a deadly cancer 20%, shock study warns