A multi-domain lifestyle intervention tested across Latin America improved global cognitive function 55% more than standard health guidance in older adults with elevated dementia risk, according to results published in The Lancet. The LatAm-FINGERS trial, which followed 1,065 participants aged 60 to 77 in Argentina, Bolivia, Brazil, Chile, Colombia, Costa Rica, Ecuador, Mexico, Peru, the Dominican Republic and Uruguay, is the first large-scale demonstration that a structured, simultaneous approach to five modifiable habits can slow cognitive decline in a region historically underrepresented in prevention research.

The mechanism rests on combining physical activity, a brain-healthy diet adapted to local food cultures, rigorous management of cardiovascular risk factors, computer-based cognitive exercises and group socialisation. Researchers in Belo Horizonte adjusted nutritional guidance to accommodate higher local consumption of meat and fats and limited access to fish, while in other sites activities such as salsa dancing were incorporated. The control group received only periodic general health recommendations. Both groups improved, but the intervention arm showed significantly greater gains in episodic memory, attention and executive function. Neurologists involved in the study note that the effect size was nearly three times larger than that observed in comparable trials conducted in higher-income countries, a finding they attribute to the region’s high prevalence of untreated hypertension, diabetes and elevated cholesterol, which creates a wider window for preventive impact.

Viewed from São Paulo and Buenos Aires, the trial adapts the Finnish FINGER model to middle-income settings marked by pronounced social inequality and limited access to health promotion. The study’s lead neuropsychologist, Lucía Crivelli of FLENI in Argentina, emphasises that the benefit emerges only when all five pillars are addressed together, reflecting the multiple biological pathways that typically contribute to dementia. This aligns with broader clinical perspectives from neurologists in New York, who stress that emotional wellbeing and creative downtime—listening to music, reading, crafting—activate different brain circuits and reduce chronic stress, a factor linked to neuroinflammation and brain-volume loss. While the Latin American trial did not isolate emotional health as a separate component, its inclusion of structured socialisation and cognitive novelty mirrors the quality-over-quantity approach to social interaction that some specialists now advocate.

The next factual milestone is the presentation of full data at the Alzheimer’s Association International Conference in 2026. Implementation researchers will watch whether the harmonised protocol can be scaled through public-health systems in the region, where dementia cases are projected to rise sharply. The trial’s funder, the Alzheimer’s Association, has signalled that the evidence base for non-pharmacological prevention in diverse sociocultural settings is now measurably stronger.