Early-onset dementia slashes work productivity years before diagnosis

Early-onset dementia, diagnosed in individuals under 65, can severely impair work productivity for up to 15 years before a formal diagnosis, according to a new study published in the journal 'Neurology'. The research highlights the profound socioeconomic effects of the condition, which manifest long before patients receive medical confirmation.

The study, conducted across two Finnish hospitals, analyzed data from 793 individuals diagnosed with early-onset dementia over twelve years. Their financial records were compared with those of 7,926 individuals of similar age and gender who did not have dementia. Researchers utilized national registries to gather information on participants' education levels, other health conditions, and tax data to calculate annual incomes.

Analysis revealed a gradual decline in productivity starting as early as 15 years before diagnosis. On average, the total productivity loss per affected individual amounted to €74,577, approximately €12,000 annually. The onset of this productivity decrease varied by dementia type; for Alzheimer's disease, the decline began about six years before diagnosis, while for frontotemporal dementia, it started eleven years earlier.

Neurologist Eino Solje from the University of Eastern Finland suggested that diagnostic delays might contribute to the prolonged period of undiagnosed symptoms, thus extending the socioeconomic impact. The researchers acknowledge that as a retrospective study, it cannot establish a definitive cause-and-effect relationship. However, they propose future longitudinal research tracking cognitive changes and advocate for interventions to slow the reduction in work productivity, mitigating the disease's effects on both individuals and society.

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These findings can partly be explained by delays in the diagnosis of the disease, which prolong the period during which symptoms remain undiagnosed, and highlight the long-term socioeconomic impacts of early-onset dementia.