G8 'will develop dementia cure or treatment by 2025' --- Leading nations have committed to developing a cure or treatment for dementia by 2025 at the G8 dementia summit. -- The global number of dementia sufferers is expected to treble to 135m by 2050. -- The G8 said it would "develop a co-ordinated international research action plan" to target the gaps in research and ways to address them. -- Dementia is incurable and ultimately leaves people needing full-time care as brain function wastes away. -- There is growing concern that some countries will simply not cope with the growing burden of dementia. -- It costs the world billions of dollars each year: £370bn ($604bn) in 2010, according to the World Health Organization. - More, BBC, at: http://www.bbc.co.uk/news/health-25318194