British researchers are hoping to shed new light on the very early stages of Alzheimer's disease, with the help of hundreds of volunteers

Home Office doctors gave the go-ahead for experimental drug trials on children at two approved schools in the 1960s, National Archives files show.

An NHS trust apologises "unreservedly" after a misdiagnosis resulted in a three-year-old boy having his legs and seven fingers amputated.

Twelve districts of Greece have banned blood donations because of malaria, with four out of 65 recent cases contracted inside Greece, Greek media report.

US doctor Donald Henderson, who led a successful campaign to wipe out smallpox worldwide, has died at the age of 87.

US pharmaceutical giant Pfizer confirms it will buy a cancer drug firm Medivation for about $14bn (£10.7bn).

Fewer people are dying or suffering from heart disease in Wales, according to an annual report.

The mental well-being of teenage girls in England has worsened in recent years, says research for the Department for Education.