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Incidence of dementia among individuals 70 years and older in Norway: A HUNT study

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Longitudinal cohort analysis highlights increased incidence rates of dementia in older adults, suggesting early detection may improve outcomes.

Dementia incidence was found to be 43.9 per 1000 person-years in the 70+ population.
Among 5229 dementia-free individuals, 14.3% developed dementia over a 4.2-year follow-up.
At follow-up, a significant number of new cases showed no prior cognitive impairment, indicating early detection is crucial.
Projected numbers suggest a near doubling of dementia cases by 2050, raising concerns for healthcare systems.

Molvik et al. (2025) studied this question.

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Longitudinal cohort analysis highlights increased incidence rates of dementia in older adults, suggesting early detection may improve outcomes.