What the trial behind this site's five-domain approach actually found — what it proved, what it didn't, and why it still matters a decade later.
The short version
1FINGER (2015) was the first large randomized trial to test a multi-domain lifestyle program — diet, exercise, cognitive training, and vascular monitoring together — in 1,260 older adults at risk of cognitive decline.
2The intervention group showed a small but statistically significant cognitive benefit over two years compared to controls.
3The effect size was modest — smaller than some single-domain trials achieved on their own — which raised an open question the field is still investigating: do combined interventions add up the way we'd hope?
4FINGER's larger legacy is the 30+ country World-Wide FINGERS network it inspired, including the U.S. POINTER study, and an 11-year follow-up published in late 2025.
The FINGER Trial is the study this entire site's five-domain framework — Move, Nourish, Sharpen, Connect, Rest — is built on. It's referenced constantly in dementia-prevention writing, often with the shorthand "FINGER proved lifestyle changes prevent dementia." That shorthand overstates what the trial showed. The real story is more interesting, and more useful: FINGER was a proof-of-concept that a structured, multi-domain program could measurably move the needle on cognition in at-risk older adults — while also surfacing a genuinely open scientific question about how much combining interventions actually adds.
What FINGER actually was
FINGER stands for the Finnish Geriatric Intervention Study to Prevent Cognitive Impairment and Disability. Researchers screened 2,654 adults aged 60–77 in Finland and randomly assigned 1,260 of them — people identified as being at elevated risk of cognitive decline based on standard risk scores — to either a two-year multidomain intervention (631 people) or a control group receiving regular health advice (629 people). Results were published in The Lancet in 2015.
What the results actually showed
After two years, the intervention group's score on a composite cognitive test battery improved more than the control group's. The between-group difference in the rate of change was 0.022 standard deviations per year, with a 95% confidence interval of 0.002 to 0.042 and a p-value of 0.030 — statistically significant, but only just, and the effect was modest in absolute terms.
1,260
at-risk older adults (ages 60–77) randomized in the original trial
Ngandu et al., The Lancet 2015
The honest complication
A commentary published alongside the trial in The Lancet raised a striking point: the effect sizes for the individual components of FINGER, when tested alone in other trials, were often larger than what FINGER achieved by combining them. Cognitive training alone, blood pressure treatment alone, and aerobic exercise alone have each shown larger effects in their own dedicated trials than the combined FINGER effect did. This challenges a natural assumption — that combining several beneficial interventions should produce an effect at least as large as, and ideally larger than, any one alone. FINGER's results suggest that's not automatically true, and researchers are still working out why. It doesn't mean the multi-domain approach is wrong; it means the science of how to combine interventions is still developing.
Why FINGER still matters
Despite the modest effect size, FINGER's significance isn't really about the size of the number — it's about what the trial demonstrated was possible, and what it set in motion.
It was a methodological first
FINGER was the first large, long-term randomized controlled trial to test a structured multi-domain lifestyle program against a meaningful control in a general older-adult population at risk of decline — not a memory clinic population, not people who already had dementia. That design has become the template for the field.
It launched a global research movement
In 2017, FINGER's lead researcher Miia Kivipelto launched the World-Wide FINGERS network — a coordinated effort to test FINGER-style interventions in different countries and populations, using harmonized methods so results can be compared and combined. The network now spans more than 30 countries across every inhabited continent, with more than a dozen trials completed and more underway, including the large U.S. POINTER study run through the Alzheimer's Association.
2009–2011
Recruitment and randomization
2,654 adults screened in Finland; 1,260 at elevated risk randomized to intervention or control.
2015
Primary results published
The Lancet publishes the 2-year results: a small but statistically significant cognitive benefit in the intervention group.
2017
World-Wide FINGERS launched
Kivipelto launches a global network to test FINGER-style interventions across countries with harmonized methods.
2020–2023
Network expands past 30 countries
Over a dozen FINGER-style trials completed worldwide, including the U.S. POINTER study; more underway.
2025
11-year follow-up published
Long-term results suggest intervention-related lifestyle improvements were sustained for years, with cognitive benefits associated with higher engagement.
The 11-year follow-up
A long-term follow-up of the original FINGER participants, published in late 2025, found that the lifestyle improvements from the two-year intervention were associated with better outcomes years later — particularly among participants who engaged most with the program and maintained the changes. This kind of dose-response pattern (more engagement, more benefit) is exactly what you'd expect if the intervention has a real effect, and it strengthens the case for FINGER's approach even as the original effect size remains modest.
What this means for you
FINGER is the reason this site is organized around five daily-habit domains rather than a single "magic bullet." But it's worth being precise about what that organizing principle is, and isn't.
What FINGER supports
A structured program addressing diet, exercise, cognitive engagement, and vascular health together is a reasonable, evidence-informed approach to protecting cognition as you age — and it's been tested in a way few prevention strategies have. The 30+ country network it inspired, and the 11-year follow-up, both add weight to that conclusion.
What FINGER doesn't prove
FINGER did not show that this approach prevents dementia — the trial measured cognitive test scores over two years, not dementia diagnoses over decades. It also doesn't establish that combining all five domains produces a bigger effect than focusing seriously on the one or two most relevant to you. If you can only sustain real change in one or two areas, that may be just as valuable as spreading thin across all five — the research on this specific question isn't settled.
FINGER is foundational not because it proved dementia is preventable with a fixed recipe, but because it showed — rigorously, in a large randomized trial — that a structured multi-domain lifestyle program produces a real, measurable cognitive benefit in at-risk older adults, while also revealing that "more components" doesn't automatically mean "proportionally more benefit." Both halves of that story matter. The honest summary: the evidence supports taking diet, exercise, cognitive engagement, and vascular health seriously together, the global research effort FINGER sparked continues to grow and report results, and the question of exactly how these pieces combine remains one of the most active areas in dementia prevention research today.
Where do you stand across all 14 risk factors?
Take the Brain Health Quiz to get your personalized profile across all five domains — with specific action steps for your highest-priority areas. Takes about 5 minutes.
1. Ngandu, T., et al. (2015). A 2 year multidomain intervention of diet, exercise, cognitive training, and vascular risk monitoring versus control to prevent cognitive decline in at-risk elderly people (FINGER): a randomised controlled trial. The Lancet, 385(9984), 2255–2263.
2. Lampit, A. & Valenzuela, M. (2015). Pointing the FINGER at multimodal dementia prevention. The Lancet, 386(10004), 1625.
3. Kivipelto, M., Mangialasche, F., Snyder, H.M., et al. (2020). World-Wide FINGERS Network: A global approach to risk reduction and prevention of dementia. Alzheimer's & Dementia, 16(7), 1078–1094.
4. Ngandu, T., Lehtisalo, J., et al. (2022). The effect of adherence on cognition in a multidomain lifestyle intervention (FINGER). Alzheimer's & Dementia, 18(7), 1325–1334.
5. Ngandu, T., Solomon, A., Lehtisalo, J., et al. (2025). Long-term adherence to lifestyle changes and association with cognitive change: 11-year results from the FINGER randomized controlled trial. Alzheimer's & Dementia. [Confirm exact citation/URL before publishing.]
Medical disclaimer: This content is for educational purposes and is not medical advice. Consult a healthcare professional before making changes to your health routine.
Last reviewed: June 2026
This site uses cookies for analytics to understand how visitors engage with our content.
Privacy policy