Cancer Archive

Most cancer screening guidelines recommend an upper age limit to cease regular testing. But older adults should ask their doctor whether the benefits of continuing screening outweigh the risks, which may include unnecessary treatments and potentially dangerous complications.

A new prostate cancer diagnosis can trigger fears about future cancers. Explore how age, genes, treatment, and lifestyle may affect your risk.

A 2026 study of more than 91,000 adults found that uninterrupted sitting raised risk for death from cancer. Replacing prolonged sitting with light, moderate, or vigorous activity significantly reduced risk, suggesting frequent movement breaks may help counter harms of sedentary behavior over time.

Discover what dark vertical streaks on fingernails might mean, from benign nail pigmentation to signs of a more serious skin cancer.

As of August 2026, sunscreens in the United States will be allowed to use an ingredient called bemotrizinol. It blocks both UVA and UVB rays and it doesn’t appear to be absorbed into the bloodstream, unlike many sunscreen chemicals.

Early detection of colorectal cancer saves lives. Now there are more ways than ever to get screened (and fewer excuses not to). American Cancer Society screening guidelines now include colonoscopy, sigmoidoscopy, CT scanning, at-home stool testing, and blood testing.

Aging is the single biggest risk factor for developing cancer. As people get older, DNA damage accumulates in cells, and chronic inflammation and imbalances in gut bacteria become more common. All of these factors may contribute to the age-related increase in cancer cases.

A new breast lump can be alarming, but not all require immediate surgery. A doctor will determine the appropriate next steps, which may include medical tests.

Many common medications can affect oral health, causing issues like dry mouth, taste changes, gum swelling, mouth sores, or thrush. Patients should check side effects on medication labels, report persistent symptoms, review medications annually, and keep up with regular dental visits.

A new, tender lump in a man’s breast doesn't necessarily mean cancer. But it should not be ignored. Gynecomastia is one possible cause, but there are others.