Professionally done tattoos have little risk when the aftercare instructions are followed, but there are still some health risks.
Dear Dr. Roach: I’ve read in several sources that tattoo ink contains known carcinogens and that getting tattooed can cause skin reactions years after. I also read that tattooing can lead to keloids. Recently, I came across a study noting that tattoos were associated with a 21% increased risk of malignant lymphoma. It said that the risk goes above and beyond the concern of non-sterile tattoo practices, which lead to the transmission of blood diseases like hepatitis B.
Keloids are a separate issue and can absolutely be a problem with tattoos, as well as many other procedures. People with a history of keloids should be very cautious about getting a tattoo. The recent study suggesting a 21% increase in the risk of lymphoma needs to be interpreted with caution. Firstly, the study did not quite meet the criteria for statistical significance, meaning this might be a chance correlation. Secondly, the people in the study who got lymphoma might be at a higher risk for reasons other than their tattoos. People who get tattoos are somewhat more likely to drink and smoke, which are risk factors for lymphoma as well.
Dear Dr. Roach: I am a 72-year-old man, and I take medicine for high blood pressure and diabetes, which are both under control. I drink 10 bottles of water per day. Does the amount of medicine you take affect how much water you need? Don’t medications dehydrate you?There are a few medicines that make drinking water more important, but there are also a few medicines where excess water drinking can be quite dangerous, especially in older people.
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