Breast cancers can change the structure of bone to make it easier to spread there, a study finds.

GPs in the UK may be slower to refer patients with cancer than in other countries, a study suggests.

A small survey in the United States finds 10% of people have skin reactions after getting a tattoo.

Nearly three-quarters of fresh shop-bought chickens test positive for food poisoning bug campylobacter in year-long study.

Scientists say they may be able to explain why some cancers return, many years after they appear to have been cured.

HIV drugs should be given at the moment of diagnosis, according to a major trial that could change the way the disease is treated.

Scientists can transform bacteria into tiny living computers capable of detecting diabetes and cancer, early studies suggest.

A smartphone app is as effective at testing eyesight as an optician's clinic, a trial suggests.