Dementia Worldwide

The global impact of dementia
Key facts

  • Every 3 seconds, someone in the world develops dementia.
  • There were an estimated 50 million people worldwide living with dementia in 2017. This number will almost double every 20 years, reaching 75 million in 2030 and 131.5 million in 2050.
  • Much of the increase will be in low and middle income countries. Already 58% of people with dementia live in low and middle income countries, but by 2050 this will rise to 68%. 

Source: Alzheimer's Disease International

World Alzheimer Reports

Every year during World Alzheimers Month, Alzheimers Disease International releases a World Alzheimer Report, and Alzheimers NZ launches the report at an event here in NZ.

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Global estimates of informal care

This report from ADI and the Karolinska Institutet in Sweden reveals that the annual global number of informal care hours provided to people with dementia living at home was about 82 billion hours. Women contribute 58 billion (71%) of these hours, highlighting the continued disproportionate gender impact of dementia.

Click here to read the report (PDF) and our news item

OECD Report
Care Needed: Improving the Lives of People with Dementia

This report reveals that fewer than 40% of the 34 OECD countries (of which New Zealand is a member) are able to estimate dementia diagnosis rates nationally. The report advises a set of policies that can help countries to improve diagnosis, strengthen access to care services, improve the quality of care, and support the families and carers of people living with dementia, and recommends that countries should work to strengthen the measurement of quality and outcomes of dementia care.

Click here to read the report

National dementia plans update

This report marks the one-year anniversary of WHO’s adoption of Global action plan on the public health response to dementia. The report states governments have been too slow to tackle dementia, and is calling on them to develop national plans and to devote funding immediately. ADI is calling on world governments to commit to developing national plans and to devote funding to plans to tackle dementia, with it set to become a trillion-dollar disease this year.

Click here to read the full report (PDF)

Dementia in the Asia Pacific Region

The report updates dementia prevalence data for the area, estimating that the number of people with dementia in the region will increase from 23 million in 2015 to almost 71 million by 2050. The report also includes profiles of each of ADI's member associations in the region and their circumstances.

Download the report (pdf)

32rd International Conference of Alzheimers Disease International (ADI)

The 32rd International Conference of ADI was held in Kyoto, Japan in late April 2017. All members of the Alzheimers NZ delegation contributed to a report based on the conference sessions they attended.

View the report (pdf)


Dementia Friendly Communities

This booklet contains information on Dementia Friendly Communities projects from countries and regions across the world, highlighting six key areas of community planning. Available in English and published by Alzheimers Disease International. 

Download the report (pdf)

Human Rights for people with dementia

Dementia Alliance International has introduced a new booklet The Human Rights of People Living with Dementia: from Rhetoric to Reality.

Download the booklet (pdf)

ADI dementia-friendly report

Dementia Friendly Communities: Key Principles and Global Developments

This publication captures some of the different ways people have implemented dementia friendly communities around the world.

Download the report from this page

Global Action

There are currently major international developments occurring in the area of dementia. Global collaboration on solutions to the international challenge of dementia is becoming increasing more important and apparent.

Download the report (pdf) 

Global Dementia Charter

In April 2013 Alzheimer's Disease International and international healthcare company Bupa launched a joint Global Dementia Charter, ‘I can live well with dementia’.

See more 

More information

For recent global information about dementia visit Dementia Alliance International and Alzheimers Disease International