The latest stories from the Health section of the BBC News web site.
Updated: 21 hours 39 min ago
A UN illegal drugs body criticises 2012 moves in two US states to legalise recreational marijuana, saying they contravene drug control treaties.
Where next for artificial hearts after death of French patient with pioneering device
Outgoing NHS boss Sir David Nicholson says he "bitterly" regrets not speaking to patients and their families caught up in the Stafford Hospital scandal.
Two hospitals missed opportunities to take action against a consultant breast surgeon performing unnecessary or incomplete operations, a review finds.
NHS England's Keith Willett discusses the pressure placed on A&E services by patients using them for non-urgent care.
Dr Elizabeth Mostofsky discusses new research suggesting anger can increase the risk of suffering a heart attack or stroke.
Having a hangover does not influence when a drinker will have their next tipple, public health researchers discover.
Nearly one in five patients in England admits they have misused A&E at some point, a survey by patient watchdog Healthwatch England suggests.
Three universities which research brain tumours are named as centres of excellence and will each receive £1m a year.
Anger may trigger a heart attack or stroke, with a "danger window" of about two hours following an outburst, say researchers.
Nearly one in five patients in England admits they have misused A&E at some point, a survey suggests.
An ancient virus has been brought back to life after lying dormant for 30,000 years in the Siberian permafrost, scientists say.
The school dropout who sparked a sanitary pad revolution in India
A chemical found in plants could help improve the lives of babies with a rare muscle disease, scientists believe.
The number of people receiving a heart transplant operation in Scotland tripled within a year, figures show.
What NHS workers are doing to improve care
NHS England has apologised for delays in paying psychiatrists who carry out assessments to detain people forcibly under the Mental Health Act.
Health Secretary Alex Neil reveals that waiting times in Scottish hospitals have dropped significantly compared with 12 months ago.
The NHS says it has lost millions of pounds in the last year because of the number of patients failing to turn up for appointments.
The crisis in Northern Ireland's healthcare system is down to the increasing role of privatisation, the trade union Nipsa says.