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Global Dementia More Than Doubled from 1990 to 2016

Lancet Neurol; 2019 Jan 1; GBD 2016 Dementia Collaborators

The global number of people living with dementia more than doubled from 1990 to 2016, mainly due to increases in population aging and growth, according to the Global Burden of Diseases, Injuries, and Risk Factors (GBD) Study 2016. GBD 2016 obtained data on dementia from vital registration systems, published scientific literature and surveys, and data from health-service encounters on deaths, excess mortality, prevalence, and incidence from 195 countries and territories from 1990 to 2016. Researchers found:

  • In 2016, the global number of individuals who lived with dementia was 43.8 million, increased from 20.2 million in 1990.
  • More women than men had dementia in 2016 (27.0 million vs 16.8 million), and dementia was the fifth leading cause of death globally, accounting for 2.4 million deaths.
  • Overall, 28.8 million disability-adjusted life-years were attributed to dementia; 6.4 million of these could be attributed to modifiable GBD risk factors of high body mass index, high fasting plasma glucose, smoking, and a high intake of sugar-sweetened beverages.

GBD 2016 Dementia Collaborators. Global, regional, and national burden of Alzheimer's disease and other dementias, 1990–2016: A systematic analysis for the Global Burden of Disease Study 2016. Lancet Neurol. 2019;18(10):88-106. doi:10.1016/S1474-4422(18)30403-4.

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