The Cocktail Report (sound really smart around your friends):
The FINGER model of dementia prevention started in Finland a decade ago, and its next big test was just published in The Lancet.
LatAm-FINGERS randomized 1,065 older adults at high dementia risk across 11 Latin American countries to structured coaching or flexible health advice.
The structured group met 38 times, followed supervised exercise, a MIND-diet plan, cognitive training, and cardiovascular monitoring, for two years.
Both groups improved on the global cognitive composite score, but the structured group gained 0.11 standard deviations more per year, a highly significant difference.
Participants were 75 percent women, average age 67.5, and no serious harm was tied to the intervention.
You have probably read that lifestyle habits protect the aging brain. What has been missing is proof that a structured program built around those habits actually outperforms getting the same advice on paper.
That is the question LatAm-FINGERS just answered. The trial was published on August 1 in The Lancet, led by Lucia Crivelli at Fleni in Buenos Aires.
The design was a single-blind randomized controlled trial across 11 Latin American countries, from Argentina to Mexico to the Dominican Republic. Adults aged 60 to 77 with cardiovascular risk factors and suboptimal cognitive performance were eligible.
Among 1,719 people assessed, 1,065 were randomized into the trial. The average age was 67.5, and 75 percent were women.
Both groups received real interventions, which matters for interpreting the results. The systematic lifestyle intervention (SLI) included supervised exercise, MIND-diet nutrition counseling, computerized cognitive training, cardiovascular risk monitoring, and 38 group meetings across two years.
The flexible lifestyle intervention (FLI) provided periodic health education, broad lifestyle recommendations, and four group meetings. This is a real-world comparison, not a comparison against doing nothing.
Both groups improved on the global cognitive composite score, the primary outcome. The structured group gained 0.31 standard deviations per year, and the flexible group gained 0.20 standard deviations per year.
The between-group difference was 0.11 standard deviations per year, with a confidence interval of 0.06 to 0.15 and a p value below 0.0001. Coaching added roughly 55 percent more cognitive gain per year than advice alone.
The finding matters because the original Finnish FINGER trial and most follow-ups have been run in high-income European countries with mostly White participants. LatAm-FINGERS reached participants who identified as Mestizo, Indigenous, Black, and Asian across a very different set of health systems.
That said, both arms of the trial improved. Some of that reflects the natural practice effect of being retested, and some reflects the fact that even flexible health advice moved the needle.
There is a caution worth stating plainly. Structured supervision came with a higher event count.
Overall, 478 adverse events were reported, 412 in the structured group and 66 in the flexible group, mostly musculoskeletal symptoms tied to supervised exercise. None were tied to the intervention itself.
To be candid, the effect size per year is small in absolute terms. Over ten years, however, it is the difference between staying independent and losing your car keys, your calendar, and your name for a grandchild.
For you, the practical takeaway is that structure works better than knowing what to do. If a program is available in your city or through your health plan, coaching outperforms self-directed change.
Why Should You Care?
Dementia is now the fifth leading cause of death worldwide. This trial gives strong evidence that a defined two-year coaching program slows cognitive decline in real communities, beyond what a pamphlet delivers.
1. Crivelli L, Suemoto CK, Sosa AL, et al. Multidomain lifestyle intervention for the prevention of cognitive decline in at-risk older adults in Latin America (LatAm-FINGERS): a single-blind, multicentre, randomised controlled trial. The Lancet. 2026 Aug 1. DOI 10.1016/S0140-6736(26)01278-X. PMID 42442374. https://www.thelancet.com/journals/lancet/article/PIIS0140-6736(26)01278-X/fulltext
2. LatAm-FINGERS Initiative for Cognitive Change (ClinicalTrials.gov NCT06492967). https://clinicaltrials.gov/study/NCT06492967
3. This lifestyle program improved cognition 55 percent more than health advice. ScienceDaily, September 3, 2026. https://www.sciencedaily.com/releases/2026/09/260903064246.htm
