Long COVID is linked to an increased risk of dementia.

the verdict

INSUFFICIENT LEANING

Recorded sources

2 sources for · 0 against

Counts group repeated records of the same source within each side. They do not measure evidence strength or source independence.

Is it true that long COVID is linked to an increased risk of dementia?

Unclear. Two sources partially support the claim: one review notes long COVID infection appears likely linked to incident dementia, and a cohort study reports COVID-19 survivors face elevated long-term cognitive decline, though that study's exposure was magnesium deficiency rather than long COVID itself. Neither source directly establishes that long COVID specifically raises dementia risk.

Verdict: PARTIAL LEAN · 2 sources for, 0 against · Last checked 3 Oct 2026

The private library was unavailable for some searches in this check. Missing library results are not evidence against the claim.

Evidence for · 2

Long COVID-19 Symptoms in People with Dementia or Mild Cognitive Impairment -

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Long COVID-19 Symptoms in People with Dementia or Mild Cognitive Impairment - PMC Lock. (n.d.). pmc.ncbi.nlm.nih.gov. https://doi.org/10.3233/ADR-230119

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More for · 1

Magnesium deficiency and long-term incident dementia among COVID-19 survivors: a propensity score-matched cohort study.

2026

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IY, H., WT, W., PH, L., & WJ, C. (2026). Magnesium deficiency and long-term incident dementia among COVID-19 survivors: a propensity score-matched cohort study.. doi.org. https://doi.org/10.3389/fnut.2026.1871623

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