Dementia epidemiology and demographics

Dementia Microchapters
Patient Information
Overview
Classification
Causes Alzheimer's Disease Parkinson's Disease Binswanger's Disease Dementia with Lewy bodies Thiamine deficiency Vascular dementia Marijuana abuse AIDS Neurosyphilis Normal pressure hydrocephalus Vitamin B12 deficiency Vitamin B6 deficiency
Differential Diagnosis

Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1];Associate Editor(s)-in-Chief: ,Sabeeh Islam, MBBS[2]

Dementia Epidemiology and Demographics

• The most common dementia throughout the world is Alzheimer's dementia, the second most common is vascular dementia or mixed dementia. The World Health Organization predicts that by 2020 there will be 29 million people with dementia globally, with Alzheimer's dementia predominating. Dementia was second to heart failure as a leading cause of mortality, accounting for 19 percent of the deaths
• The prevalence of dementia increases by 30% with age greater than 80 years and the incidence of dementia doubles every 10 years after age 60 years
• People with black ethnicity are at higher risk of developing dementia compared to white race. While individuals do not die of Alzheimer's dementia per se, advanced disease increases vulnerability for other disorders, commonly infections, which ultimately lead to death.
• Dementia is more prevalent in females compared to males.