Dementia costs the UK £26.3 Billion a year. The analysis outcome from Alzheimer's Society, who said that fighting dementia economic's impact it's strong enough to cover the annual energy bill of every household in the country. Two thirds of the cost of dementia is picked up by people with dementia and their families. UK need greater investment in dementia research: Dementia costs over £30,000 per person with dementia each year, yet only £90 per person is spent on research. Alzheimer's desease costs society £26bn each year, yet only £74m was spent on research in the last year. Too many people with dementia aren't living as well as they could.