04:44pm Friday 05 June 2020

Antidepressant use begins years before Alzheimer’s diagnosis

Antidepressant initiation was more frequent among persons with Alzheimer’s disease already 9 years before the diagnosis than among comparison persons not diagnosed with Alzheimer’s disease. This finding was somewhat surprising. It may be related to more frequent treatment of depressive symptoms because depression has been associated with an increased risk of Alzheimer’s disease in previous studies.

Antidepressant use was investigated in the Finnish nationwide MEDALZ study from 9 years before until 4 years after the diagnosis of Alzheimer’s disease. The difference in antidepressant initiations persisted during the entire follow-up period. During the 13-year follow-up period, 42% of persons with Alzheimer’s disease and 22% of persons not diagnosed with the disease initiated antidepressant use. The most commonly used antidepressant group was selective serotonin reuptake inhibitor (SSRI) drugs, followed by mirtazapine.

The register-based study was based on 62,104 Finnish persons with Alzheimer’s disease diagnosed between 2005 and 2011.

For further information, please contact:

Heidi Taipale, post doctoral researcher, School of Pharmacy, University of Eastern Finland, [email protected]

Research article:

Incidence of antidepressant use in community-dwelling persons with and without Alzheimer’s disease: 13-year follow-up. Arto Puranen, Heidi Taipale, Marjaana Koponen, Antti Tanskanen, Anna-Maija Tolppanen, Jari Tiihonen, Sirpa Hartikainen. International Journal of Geriatric Psychiatry, published online February 28, 2016.

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