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Hospital-Treated Infections Linked to Dementia Risk

Investigators identify 29 conditions associated with dementia risk in nationwide registry analysis.

  • By

  • Kathryn Wighton

  • April 7, 2026

  • 3 min

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  • 1

    Hospital-treated cystitis and unspecified bacterial infections are linked to increased dementia risk in older patients.

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    The study analyzed 62,555 dementia patients and 312,772 matched controls, revealing 29 diseases associated with dementia risk.

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    Infections remained linked to dementia risk even after adjusting for noninfectious comorbidities, indicating independent associations.

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    Early-onset dementia showed stronger associations with infections, including gastroenteritis and pneumonia.

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    The study suggests severe infections may be risk factors for dementia, with minimal excess risk attributable to comorbidities.

Original Source(s)

Hospital-Treated Infections Linked to Dementia Risk

  • by Kathryn Wighton

  • April 7, 2026

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