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Younger Generations Less Likely To Have Dementia, Study Suggests
mardi 3 juin 2025, 05:30 , par Slashdot
![]() Writing in the journal Jama Network Open, researchers in Australia report how they analyzed data from 62,437 people aged 70 and over, collected from three long-running surveys covering the US, England and parts of Europe. The team used an algorithm that took into account participants' responses to a host of different metrics, from the difficulties they had with everyday activities to their scores on cognitive tests, to determine whether they were likely to have dementia. They then split the participants into eight different cohorts, representing different generations. Participants were also split into six age groups. As expected, the researchers found the prevalence of dementia increased by age among all birth cohorts, and in each of the three regions: UK, US and Europe. However, at a given age, people in more recent generations were less likely to have dementia compared with those in earlier generations. 'For example, in the US, among people aged 81 to 85, 25.1% of those born between 1890-1913 had dementia, compared to 15.5% of those born between 1939-1943,' said Lenzen, adding similar trends were seen in Europe and England, although less pronounced in the latter. The team said the trend was more pronounced in women, especially in Europe and England, noting that one reason may be increased access to education for women in the mid-20th century. However, taking into account changes in GDP, a metric that reflects broader economic shifts, did not substantially alter the findings. A number of factors could be contributing to the decline. 'This is likely due to interventions such as compulsory education, smoking bans, and improvements in medical treatments for conditions such as heart disease, diabetes, and hearing loss, which are associated with dementia risk,' said Prof Tara Spires-Jones, the director of the Centre for Discovery Brain Sciences at the University of Edinburgh. Read more of this story at Slashdot.
https://science.slashdot.org/story/25/06/03/0142217/younger-generations-less-likely-to-have-dementia...
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