Dreaded by many people as an inevitable part of normal aging, Dementia has displaced Cancer as the most feared health problem. Cancer continues to be a serious condition, but it is often curable, and almost always treatable. In contrast, the fear of dementia is complicated by the fear of ageing, and by muddled thinking about its relationship with Alzheimer's disease. Yet, there is no reason to be disheartened. Ever-evolving scientific evidence...