The summit, which will be held in London, will look at how the G8 can lead efforts to prevent, delay and effectively treat dementia. It aims to:

• identify and agree a new international approach to dementia research
• help break down barriers within and between companies, researchers and clinicians
• secure a new level of co-operation needed to reach shared goals faster than nations acting alone

The online questions give people the opportunity to say what they think should be discussed at the summit. Although this is not part of the formal summit process, all the comments will be considered by the Department of Health team planning the summit and will be used to inform their work developing themes for discussion.

People are being asked to answer the following questions:

• Which areas of dementia research would benefit most from international collaboration?
• How can we work internationally to get the most benefit from what we already know about dementia?
• What are the barriers to international collaboration on dementia research and how could they be overcome?
• What roles can business and industry play in improving quality of life for people with dementia?

Have your say on improving dementia research across the world on the Dementia Challenge site. Comments close on 15 October.