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A 2024 study suggests that having one or more tattoos may raise a person's risk of developing lymphoma, a type of blood cancer.

Abnormal Pap test results don't always indicate cervical cancer. Most abnormal findings result from the presence of human papillomavirus, or HPV. Typically, the next step is a colposcopy, a test that enables the doctor to look closely at areas that appear abnormal.

While cigarette smoking remains the biggest cause of lung cancer, between 15% and 25% of cases globally occur in people who have never smoked. Lung cancer claims more women's lives than breast and ovarian cancer combined. Risk factors among nonsmokers include age, family history, chronic lung conditions, and exposure to secondhand tobacco smoke, radon, diesel fumes, air pollution, and asbestos. People concerned about their risks should discuss it with their doctor, reduce exposure to lung cancer contributors, and get involved in advocacy efforts.

Metformin, a medicine prescribed to treat type 2 diabetes, also has cardiovascular benefits and is used off-label to treat other conditions. Interest is growing in its potential to help lower risks for other serious health problems and even slow aspects of aging, but which of these benefits, if any, apply to people who do not have diabetes?

Some products people use daily have been associated with increased cancer risks. Examples are aspartame, nonstick cookware, mattresses, cleaning products, and personal care products. While evidence is mixed, most consumer products confer low cancer risks, if any. People who are concerned about exposure to these common products should find alternatives. People can also reduce their overall cancer risks by stopping smoking, avoiding alcohol, exercising, and maintaining a healthy weight.

Lung cancer kills more Americans than any other cancer. The latest guidelines from the American Cancer Society aim to reduce deaths by considerably expanding the pool of people who seek annual, low-dose CT lung screening scans.

In a 2023 study, people who didn't exercise regularly but accumulated three and a half minutes of vigorous daily activity (such as stair climbing) had a 32% lower risk for developing cancer, compared with non-exercisers who didn't do any vigorous activity.