Express.co.uk | Dementia drug 'disappointment': Trial of Alzheimer's drug STOPPED Express.co.uk Alzheimer's disease is the most common form of dementia, affecting more than 500,000 people in the UK. Dr Doug Brown, Director of Research at Alzheimer's Society, said: “It's encouraging that there are no concerns over the safety of this drug and that ... Alzheimer's Disease Potential Cure Fails |