The gut bacterium Bacteroides fragilis has long presented researchers with a paradox. It has been associated with colorectal cancer, yet it also lives quite happily in most healthy people. A study by ...

"It has been a paradox that we repeatedly find the same bacterium in connection with colorectal cancer, while at the same time it is a completely normal part of the gut in healthy people," says ...

An oncologist explains the findings.

Add Yahoo as a preferred source to see more of our stories on Google. An illustration of multicolored virus particles shaped like the Zika virus with green, orange and purple proteins tessellated on ...

In a study investigating how the COVID-19 virus affects cancer, researchers removed cancer-fighting cells from lung tissues of mice for further study. In a study investigating how the COVID-19 virus ...

Viruses have shown huge potential in treating various kinds of cancer, but the immune response has limited their application to tumours near the body’s surface. Now, scientists have demonstrated that ...

Few viruses are as widespread – and sometimes misunderstood – as the human papillomavirus, or HPV. It’s so common that most of us – up to 80% – will encounter it at some point in our lives, often ...

Researchers have discovered a key mechanism used by Kaposi's sarcoma-associated herpesvirus (KSHV), also known as human herpesvirus 8 (HHV8), to induce cancer. The research points to effective new ...