Hospital-Treated Infections Linked to Dementia Risk - Takeaways - MDSpire

Hospital-Treated Infections Linked to Dementia Risk

  • 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.

  • 2

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

  • 3

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

  • 4

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

  • 5

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

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