The latest stories from the Health section of the BBC News web site.
Updated: 16 hours 40 min ago
A drug can restore the ability of the eye to sense light after blindness, animal studies show.
London's South Bank University has built a £20,000 fake pub to test the effect of alcohol on people's behaviour.
Children who have repeatedly moved schools may be more likely to develop psychotic-like symptoms as young teenagers, a study shows.
The government is told it must take action to prevent more teenagers killing themselves after viewing online self-harm sites.
Women over the age of 60 are the most likely to be admitted to hospital for anxiety, says a report.
'Far too little' is known about the health risks of chemicals used in food packaging, and some could cause cancer, scientists say.
How did the medical records project go so wrong?
Statisticians say drink-related deaths in Scotland have fallen significantly in the 10 years to 2012, bucking the trend in the rest of the UK.
Do parasites have a way of changing our behaviour?
More than a quarter of first-time miscarriages could be prevented by making a number of lifestyle changes, research in Denmark suggests.
A major project which would allow anonymous medical records from GPs to be shared with organisations outside the NHS, is to be delayed by six months.
Eating disorder sufferers do not realise the condition can be "fatal", the families of two young people who died from them have said.
The start of a new NHS data-sharing scheme in England involving medical records is being delayed by six months.
Delays by ambulance crews in England could be costing 2,500 lives a year, says a former chief executive.
A monkey's brain has been used to control the movements of a sedated monkey, scientists report, raising hope for advances in overcoming paralysis.
A growing number of ambulance service staff are going off sick because of stress, BBC Wales learns.
A postcode lottery among England's 12 ambulance services could be costing 2,500 lives a year, a former ambulance service chief executive claims.
One family describes losing someone who takes their own life
The £1.2m NHS cost of replacing faulty PIP breast implants fitted by private cosmetic surgery companies will not be reclaimed by the Welsh government.
Services for babies with breastfeeding problems because of tongue tie need to be improved, the NCT parenting charity says.