To ask the Secretary of State for Health how many people in England suffer from Alzheimer's disease. 
The Department does not routinely collect such information. There are a number of different estimates available. The research quoted by the older people's national service framework in 2001 estimated that approximately 600,000 people in the United Kingdom have dementia. It is estimated that about 5 per cent. of people over 65 have dementia and that Alzheimer's disease causes up to 60 per cent. of cases of dementia.