More medical news from BBC Health
What happens when you're sleep deprived?
BBC Health : June 26, 2017, 12:27 pm
A new study is looking at the impact of sleep on your brain power.
Magnets used to control flickering eyes
BBC Health : June 26, 2017, 9:40 am
A case study has shown how magnetic implants in the eye can successfully control the movement of the eye.
More than 1,700 patients at risk over NHS mail blunder
BBC Health : June 26, 2017, 6:11 am
Cancer test results, child protection notes and medication advice were among notes that went missing.
Why NHS can't pay for all Glendon's drugs
BBC Health : June 26, 2017, 5:30 am
Glendon has a brain tumour - there are drugs that might extend his life but he must pay for them.
Middle-aged workers 'spend more time sitting than pensioners'
BBC Health : June 26, 2017, 4:22 am
Researchers find 45 to 54-year-olds spend on average 7.8 hours per weekday sitting down.