Throughout my lifetime, tattoos have grown in popularity. When I was growing up, the only time you saw one was on grizzled old Navy vets. Today, they’re almost everywhere. Roughly one-third of Americans, men and women combined, have at least one. However, researchers in Europe warn that anyone with a tattoo has an increased chance of lymphoma cancer. They’re not saying that you should avoid getting one, but you need to be aware and see a doctor if there are any changes with your skin. This research is relatively new, so I’m sure more will be done. But it’s best to pay attention…