Walk into a publicly funded senior center in Santiago and you pass a lot of walls. Notice boards, corridors, the room where the twice-weekly exercise group meets. In three of those centers, during 2024, the walls started carrying something new: posters of older people doing ordinary, capable things, with evidence-based messages about reducing dementia risk. The people they were designed to catch were not only the participants shuffling past to a class. They were also the occupational therapists, social workers, psychologists and physiotherapists who walked the same corridors all day. At the start of the study, fewer than one in ten of the older adults enrolled said a healthcare provider had ever talked to them about preventing dementia.
The trial behind those posters, called CULTIVAMENTE, was published in the Journal of the American Geriatrics Society on 23 December 2025. It was a pragmatic cluster-randomized trial: seven senior centers, not individuals, were randomized, three to the campaign and four to control. Everyone enrolled was 60 or older with cognitive impairment but no dementia, 211 people in all, mean age 74.8 years, 80.5 percent of them women. Every center kept its usual programme of twice-weekly physical, cognitive and social group activities, and every center's staff received training talks on dementia. Only the intervention centers also got the campaign itself: posters sited around the building, printed brochures, and web content, all built around positive images of aging. The follow-up was six months, running from April to November 2024.
What shifted is worth reading slowly. In the campaign centers, the share of participants reporting that a healthcare provider had discussed dementia prevention with them rose from 9.9 percent to 21.8 percent (p less than 0.001). In the control centers it went from 7.3 percent to 5.5 percent (p = 0.973). The share who said they knew ways to prevent dementia rose from 32.7 percent to 61.4 percent in the campaign centers (p = 0.002), against 49.1 percent to 50.9 percent in control. The share reporting that a provider had given them recommendations on managing risk factors went from 53.5 percent to 73.3 percent (p = 0.018), against 65.5 percent to 70.9 percent. The trial's main behavioural outcome, a composite score covering physical, social, dietary and cardiovascular habits, improved more in the campaign group by 0.15 of a standard deviation (95 percent confidence interval 0.02 to 0.28, p = 0.021), which the authors describe as a 95.4 percent greater increase than control. That is a modest absolute effect from a confident-sounding percentage, and both things are true at once.
The cognitive findings need more care still. The paper reports improved scores in the intervention group for memory (0.24; 95 percent CI 0.07 to 0.41) and a combined memory and executive functioning measure (0.21; 95 percent CI 0.08 to 0.33), and counts of mild-to-moderate cognitive impairment falling from 70 to 67 in the campaign centers while rising from 71 to 75 in control. The companion conference abstract presented at AAIC 2025 states plainly that no differences in global cognition scores were observed. Six months is a short window, the counts are small, and nobody measured dementia. This is a study about what happens in a building, not about what happens to a brain over a decade.
The campaign was not improvised. A separate paper published in Alzheimer's and Dementia on 28 April 2026 documents how it was built: a three-phase, design-thinking process in which 101 older adults and 54 healthcare providers helped shape the materials, with messages drawn from the World Health Organization's risk reduction guidance and the 2024 Lancet Commission. The focus groups kept returning to the same obstacle. Providers described institutional assumptions about older people that can blunt referrals; participants described memory worries being waved away as "normal for their age". A poster of a capable 75-year-old is, in that light, an argument aimed at two audiences in one glance.
For a family reading this, the honest translation is narrow and still useful. A cheap intervention, posters and brochures and a website, doubled the proportion of people who said prevention had come up with a clinician. It also left roughly four out of five of them still saying it never had. Prevention guidance only counts if somebody raises it in the room, and this trial is one of the few to measure whether anyone does. Whether any of it applies to a particular person, with a particular set of risk factors, is a conversation for that person's own clinician.