– Dementia facts and figures.

This post includes some scary dementia facts and figures about the global impact of dementia from the World Alzheimer Report 2015 which was independently researched by King’s College London and supported by Bupa.

Dementia facts & figures worldwide

  • Around 46.8 million people have dementia worldwide (2015).
  • This figure is thought to be nearer 50 million in 2017.
  • This figure is estimated to increase to 131.5 million by 2050.
  • Someone in the world develops dementia every 3 seconds.

By world region

The estimated number of people living with dementia (2015) by world region are:

  • America’s – 9.4 million.
  • Africa – 4 million.
  • Europe – 10.5 million.
  • Asia  – 22.9 million.
Dementia facts and figures
The projected number of people living with dementia by 2050 according to the World Alzheimer’s Report published by Alzheimer’s Disease International.


  • In the UK it is estimated that there are 850,000 people living with dementia (approx 530,000 have been diagnosed).
  • This figure is estimated to increase to 2 million by 2051.

Causes of dementia

Although there is a lot of contradictory information about which diseases account for the largest proportion of dementia cases, according to the National Institute for Clinical Excellence (NICE) website the most common causes of dementia are:

5 thoughts on “– Dementia facts and figures.

  1. Concerned about my husband’s “wasting” and weight loss. He eats well, Any relationship to having a diagnosis of dementia?

    1. Hi, sorry to hear about your husband and for the delay in replying. I know that people with dementia often experience weight loss due to the many difficulties in eating well i.e. loss of appetite, apathy, poor concentration or co-ordination etc. But if your husband is eating well then there is obviously a different reason for the weight loss. Although I am no expert on dementia, only through my experience with Mum, so I would consult with your husband’s doctor.

  2. Can you tell me more about young onset Dementia? There’s very little information out there. I was diagnosed at 56, 4 1/2 years ago.

    1. Hi, sorry to hear about your diagnosis.

      Yes I will be happy to pull together a post. I am away at the moment so it will be a couple of weeks but I will let you know.

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