A study published in the Lancet suggests that the number of people diagnosed with dementia has doubled over the 10 years (between the year 2005 and the year 2015).
University of Manchester researchers found 0.82% people diagnosed with dementia in 2015, compared with 0.42% in 2005. In addition, the proportion of those who received medications for dementia have increased from 15% to 36.3%.
In Norway, it is estimated that about 1.5% of the entire population suffers from dementia, and almost every fifth person will develop dementia during their lifetime. As dementia is age-dependent and its prevalence rises sharply with increasing age, the current estimates show that the number of people with dementia will rise even further as a result of an ageing population.
By studying around 9 million patients, the researcher from University of Manchester found a steady increase in the dementia diagnosis regardless of age, although, the proportional increase in the rate of diagnosis was higher in older patients. The authors of the study attributed this rise in the dementia diagnosis to ageing population, increased clinical awareness, and implementation of national policies and guidelines.
Majority of the known risk factors for dementia are the same as for the heart disease. Therefore, primary prevention of heart disease would probably also protect against dementia. The most common interventions to reduce incidence of heart disease include less smoking, increased physical activity, and a healthy diet.
Javaid Nauman, Researcher at CERG