Cognitive problems don't always turn into dementia

The risk of mild cognitive impairment (MCI) developing into dementia could be less than previously thought, according to a review of studies carried out by researchers at Leicester University and Nottinghamshire Healthcare NHS Trust. Using information from 41 studies they found that only 10% of people in high-risk groups and 5% of people in low-risk groups with MCI went on to develop dementia. Even after a longer time only 20-40% of people with MCI went on to develop dementia.

http://uk.reuters.com/article/healthNews/idUKTRE5355CL20090406?feedType=RSS&feedName=healthNews&rpc=451