The way the body can track the passing of the seasons in a "chemical calendar" has been discovered by scientists.

Scientists say they have discovered a genetic clue to why some breast cancers relapse, which could lead to better treatment.

Many smartphone health apps vetted and promoted by the NHS leak data that could be used for ID theft and fraud, a study finds.

The surgeon general of the armed forces has defended the use of a controversial anti-malarial drug given to soldiers serving overseas.

The World Health Organization is set to remove Nigeria from the list of polio endemic countries, a 'milestone' on the path to eradicating the paralysing viral infection.