The data from 195 countries on the spread of Alzheimer's disease and dementia from 1990 to 2016, have been analysed by an international group of collaborating scientists. The findings of the study have been published in the journal The Lancet Neurology.
The study drew on official data on morbidity and mortality, as well as scientific papers containing more accurate information on the spread of the disease.
The results of the statistical analysis have shown that the number of people suffering from Alzheimer's and other dementia increased from 20.2 million in 1990 to 43.8 million in 2016. Of these, 27 million were women and 16.8 million were men. Researchers have attributed the increase in the spread of the disease to both the aging and growth of the global population.
One of the study's authors, HSE Department of Health Care Administration and Economy Professor Vasily Vlasov, has noted that, according to the data, more than 1 million Russians -- most over 50 -- were suffering from dementia in 2016.