Dementia Risk Calculator / Dementia risk
I Have Dementia Risk Factors
Estimate the 20-year risk of dementia from midlife factors with the CAIDE risk score.
Your result
Enter your numbers and press the button. Your result appears here.
How the CAIDE score works
CAIDE adds points for seven midlife factors linked with dementia 20 years later in a Finnish study of 1,409 people.
Age 47–53: 3, over 53: 4 · Education 7–9 y: 2, 0–6 y: 3 · Male: 1 · SBP > 140: 2 · BMI > 30: 2 · Cholesterol > 6.5 mmol/L: 2 · Inactive: 1
Score 0–5: 1.0% risk; 6–7: 1.9%; 8–9: 4.2%; 10–11: 7.4%; 12–15: 16.4% over 20 years.
Modifiable risk factors
The 2024 Lancet Commission linked about 45% of dementia cases to 14 modifiable factors, including high blood pressure, hearing loss, inactivity, smoking, diabetes and social isolation.
CAIDE score and 20-year risk
| Score | Dementia risk in 20 years |
|---|---|
| 0–5 | 1.0% |
| 6–7 | 1.9% |
| 8–9 | 4.2% |
| 10–11 | 7.4% |
| 12–15 | 16.4% |
Common questions
Can dementia risk be reduced?
Yes. Controlling blood pressure, staying active, not smoking, treating hearing loss and staying socially engaged all lower risk.
Should I talk to a doctor?
Yes, if the result worries you or if you have new symptoms. These tools support, but do not replace, a clinical assessment.
Sources
- US Social Security Administration. Actuarial life table, 2022 period life table (2025 Trustees Report).
- Levine ME et al. An epigenetic biomarker of aging for lifespan and healthspan. Aging 2018;10:573–591; Liu Z et al. PLoS Med 2018;15:e1002718 (and correction).
- Morris JF, Temple W. Spirometric "lung age" estimation for motivating smoking cessation. Prev Med 1985;14:655–662. Quanjer PH et al. ECSC lung volumes and forced ventilatory flows. Eur Respir J 1993;6 Suppl 16:5–40.
- CDC. STEADI: Stay Independent brochure. Morse JM et al. A prospective study to identify the fall-prone patient. Soc Sci Med 1989;28:81–86.
- Bohannon RW, Andrews AW. Normal walking speed: a descriptive meta-analysis. Physiotherapy 2011;97:182–189. Studenski S et al. Gait speed and survival in older adults. JAMA 2011;305:50–58.
- Mahoney FI, Barthel DW. Functional evaluation: the Barthel Index. Md State Med J 1965;14:61–65. Shah S et al. J Clin Epidemiol 1989;42:703–709.
- Morley JE et al. A simple frailty questionnaire (FRAIL). J Nutr Health Aging 2012;16:601–608. Searle SD et al. A standard procedure for creating a frailty index. BMC Geriatr 2008;8:24.
- Kivipelto M et al. Risk score for the prediction of dementia risk in 20 years among middle aged people. Lancet Neurol 2006;5:735–741. Tombaugh TN, McIntyre NJ. J Am Geriatr Soc 1992;40:922–935.