Key facts

  • Dementia is a syndrome in which there is deterioration in memory, thinking, behaviour and the ability to perform everyday activities.
  • Although dementia mainly affects older people, it is not a normal part of ageing.
  • Worldwide, 47.5 million people have dementia and there are 7.7 million new cases every year.
  • Alzheimer's disease is the most common cause of dementia and may contribute to 60–70% of cases.
  • Dementia is one of the major causes of disability and dependency among older people worldwide.
  • Dementia has physical, psychological, social and economical impact on caregivers, families and society.

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