Global Neurodegeneration Epidemiology
Overview
This page provides a global perspective on neurodegenerative disease epidemiology, covering regions beyond the major economies. It synthesizes data from WHO, GBD studies, and regional research to present a worldwide view of disease burden.
Regional Breakdown
Asia-Pacific (excluding China, Japan, India)
| Country/Region | Alzheimer's | Parkinson's | Notes |
|----------------|-------------|-------------|-------|
| South Korea | 800,000 | 200,000 | Rapidly aging |
| Indonesia | 200,000 | 100,000 | Underreported |
| Thailand | 500,000 | 100,000 | Growing |
| Vietnam | 300,000 | 80,000 | Limited data |
| Philippines | 200,000 | 60,000 | |
| Malaysia | 150,000 | 50,000 | |
| Australia | 400,000 | 100,000 | Well-documented |
| New Zealand | 50,000 | 15,000 | |
Latin America
| Country/Region | Alzheimer's | Parkinson's | Notes |
|----------------|-------------|-------------|-------|
| Brazil | 1.5 million | 400,000 | Largest in region |
| Mexico | 800,000 | 200,000 | |
| Argentina | 400,000 | 100,000 | |
| Colombia | 300,000 | 80,000 | |
| Chile | 200,000 | 50,000 | |
| Peru | 200,000 | 50,000 | |
| Venezuela | 150,000 | 40,000 | |
Key Characteristics:
- Younger onset age than developed countries
- Limited diagnostic infrastructure
- Family-based care predominant
- Rising prevalence with demographic transition
Middle East & Africa
...Global Neurodegeneration Epidemiology
Overview
This page provides a global perspective on neurodegenerative disease epidemiology, covering regions beyond the major economies. It synthesizes data from WHO, GBD studies, and regional research to present a worldwide view of disease burden.
Regional Breakdown
Asia-Pacific (excluding China, Japan, India)
| Country/Region | Alzheimer's | Parkinson's | Notes |
|----------------|-------------|-------------|-------|
| South Korea | 800,000 | 200,000 | Rapidly aging |
| Indonesia | 200,000 | 100,000 | Underreported |
| Thailand | 500,000 | 100,000 | Growing |
| Vietnam | 300,000 | 80,000 | Limited data |
| Philippines | 200,000 | 60,000 | |
| Malaysia | 150,000 | 50,000 | |
| Australia | 400,000 | 100,000 | Well-documented |
| New Zealand | 50,000 | 15,000 | |
Latin America
| Country/Region | Alzheimer's | Parkinson's | Notes |
|----------------|-------------|-------------|-------|
| Brazil | 1.5 million | 400,000 | Largest in region |
| Mexico | 800,000 | 200,000 | |
| Argentina | 400,000 | 100,000 | |
| Colombia | 300,000 | 80,000 | |
| Chile | 200,000 | 50,000 | |
| Peru | 200,000 | 50,000 | |
| Venezuela | 150,000 | 40,000 | |
Key Characteristics:
- Younger onset age than developed countries
- Limited diagnostic infrastructure
- Family-based care predominant
- Rising prevalence with demographic transition
Middle East & Africa
| Region | Alzheimer's | Parkinson's | Notes |
|--------|-------------|-------------|-------|
| Turkey | 600,000 | 150,000 | |
| Saudi Arabia | 100,000 | 30,000 | Limited data |
| Iran | 400,000 | 100,000 | |
| Egypt | 300,000 | 80,000 | |
| Nigeria | 200,000 | 50,000 | Very limited data |
| South Africa | 100,000 | 30,000 | |
Challenges:
- Very limited epidemiological data
- Underdiagnosis widespread
- Conflict zones severely impact healthcare
- Different disease patterns (younger onset)
Russia & Eastern Europe
| Country | Alzheimer's | Parkinson's | Notes |
|---------|-------------|-------------|-------|
| Russia | 1.5 million | 400,000 | Underestimated |
| Ukraine | 500,000 | 120,000 | Post-conflict |
| Poland | 600,000 | 150,000 | Growing |
| Romania | 400,000 | 100,000 | |
| Czech Republic | 200,000 | 50,000 | |
Global Summary
Total Worldwide Burden (2025)
| Disease | Cases | % of Global Burden | Top Regions |
|---------|-------|-------------------|-------------|
| Alzheimer's/Dementia | 55-60 million | — | China, Europe, US |
| Parkinson's Disease | 10-12 million | — | China, Europe, US |
| ALS | 350,000-400,000 | — | US, Europe |
| FTD | 1-1.5 million | — | US, Europe |
| Huntington's Disease | 150,000-200,000 | — | US, Europe |
Regional Distribution
| Region | Dementia Cases | % Global | Notes |
|--------|----------------|----------|-------|
| Asia-Pacific | 25-30 million | 45-50% | Largest region |
| Europe | 14-17 million | 25-30% | Highest per capita |
| North America | 8-9 million | 15% | |
| Latin America | 4-5 million | 8% | Rising |
| Middle East/Africa | 2-3 million | 5% | Underreported |
Cross-Country Comparisons
Age-Standardized Prevalence (per 1,000 population, 65+)
| Country | Dementia | Parkinson's | Notes |
|---------|----------|-------------|-------|
| Japan | 170-190 | 15-20 | Highest |
| Italy | 160-180 | 15-18 | |
| Germany | 150-170 | 12-15 | |
| UK | 130-150 | 10-12 | |
| US | 110-130 | 10-12 | |
| China | 60-80 | 8-10 | Rising rapidly |
| India | 50-70 | 5-8 | Underreported |
| Brazil | 80-100 | 8-10 | |
Healthcare Access Index
| Region | Specialists per 1M | MRI Access | Diagnosis Rate |
|--------|-------------------|-------------|---------------|
| Western Europe | 20-30 | 90% | 60-70% |
| North America | 15-25 | 95% | 50-60% |
| East Asia | 10-20 | 70% | 40-50% |
| Latin America | 5-10 | 50% | 30-40% |
| South Asia | 1-3 | 20% | 10-20% |
| Africa | <1 | 10% | <10% |
Risk Factors by Region
Genetic Factors
- APOE4 allele: Higher in European populations
- LRRK2 G2019S: More common in European, less in Asian
- GBA variants: Higher in Ashkenazi, European descent
Environmental Factors
- Industrial regions: Higher PD rates (toxins)
- Rural/agricultural: Pesticide exposure correlation
- Smoking: Risk factor for PD, protective for AD
Lifestyle Factors
- Mediterranean diet: Protective effect
- Cardiovascular health: Strong correlation with dementia
- Education: Higher education protective
Global Initiatives
WHO Response
- Global Dementia Observatory: Data collection
- Dementia Atlas: Country-level data
- Global Action Plan: 2025-2030
Research Networks
- World FTD Initiative: International collaboration
- International Parkinson's Disease Genomics Alliance
- Human Brain Project: European Union
Future Projections
Global Dementia Projections
| Year | Cases | Change from 2025 |
|------|-------|------------------|
| 2025 | 55 million | Baseline |
| 2030 | 70 million | +27% |
| 2040 | 95 million | +73% |
| 2050 | 130 million | +136% |
Regional Changes:
- Asia: +200% (driven by China, India)
- Europe: +80%
- North America: +50%
- Latin America: +150%
- Africa: +300% (limited current data)
Cross-Links
- [Neurodegeneration Impact Measures](/diseases/neurodegeneration-impact-measures)
- [US Neurodegeneration Epidemiology](/diseases/us-neurodegeneration-epidemiology)
- [China Neurodegeneration Epidemiology](/diseases/china-neurodegeneration-epidemiology)
- [Europe Neurodegeneration Epidemiology](/diseases/european-neurodegeneration-epidemiology)
- [Japan Neurodegeneration Epidemiology](/diseases/japan-neurodegeneration-epidemiology)
- [India Neurodegeneration Epidemiology](/diseases/india-neurodegeneration-epidemiology)
References
[WHO Global Dementia Observatory](https://www.who.int/mental_health/neurology/dementia)
[GBD 2024 Neurological Disorders Study](https://www.thelancet.com/journals/lanneurol/home)
[Alzheimer's Disease International](https://www.alzint.org/)
[Parkinson's Foundation Global Data](https://www.parkinson.org/)