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the claim

Long COVID causes lasting loss of taste and smell.

the verdict
CONTESTED PARTIAL
Recorded sources
5 sources for · 1 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 causes lasting loss of taste and smell?

Partly. Several cohort and clinical sources report that loss of taste and smell occurs and can persist in long COVID, including a Norwegian cohort finding taste/smell loss in 28% of young adults at six months and a qualitative study of patients with persistent disorders. One small histological study found the olfactory dysfunction reversible, so the evidence covers parts of the claim rather than settling lasting loss for all patients.

Verdict: CONTESTED PARTIAL · 5 sources for, 1 against · Last checked

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

Evidence for · 5
Long COVID
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Long COVID. (n.d.). en.wikipedia.org. https://en.wikipedia.org/wiki/Long_COVID

Evidence against · 1
Histological study of the effect of COVID 19 on the olfactory mucosa of patients with post COVID-19 olfactory dysfunction
2025
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Histological study of the effect of COVID 19 on the olfactory mucosa of patients with post COVID-19 olfactory dysfunction. (2025). doi.org. https://doi.org/10.55675/sjms.v4i1.123

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More for · 4
Challenges to continuity of care among patients with long COVID-related taste and smell disorders: a qualitative study.
2026
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MB, M., P, M., C, F., SM, G., A, G., L, C., NI, E., MV, F., LL, F., & D, P. (2026). Challenges to continuity of care among patients with long COVID-related taste and smell disorders: a qualitative study.. doi.org. https://doi.org/10.3389/fpubh.2026.1784507

Goldstein-Lab/Finlay_long_COVID_smell_loss: Code from: "Persistent post-COVID-19 smell loss is associated with immune infiltration and altered olfactory epithelial gene expression" (Finlay et al. 2022)
2022
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jbfinlay (2022). Goldstein-Lab/Finlay_long_COVID_smell_loss: Code from: "Persistent post-COVID-19 smell loss is associated with immune infiltration and altered olfactory epithelial gene expression" (Finlay et al. 2022). zenodo.org. https://doi.org/10.5281/zenodo.7102423

Long COVID in a prospective cohort of home-isolated patients
2021
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Blomberg, B., Mohn, K., Brokstad, K., Zhou, F., Linchausen, D. W., Hansen, B., Lartey, S., Onyango, T. B., Kuwelker, K., Sævik, M., Bartsch, H., Tøndel, C., Kittang, B., Madsen, A., Bredholt, G., Vahokoski, J., Fjelltveit, E. B., Bansal, A., Trieu, M. C., & Ljostveit, S. (2021). Long COVID in a prospective cohort of home-isolated patients. doi.org. https://doi.org/10.1038/s41591-021-01433-3

Deep learning analysis of long COVID and vaccine impact in low- and middle-income countries (LMICs): development of a risk calculator in a multicentric study
2025
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Shaheen, A., Shaheen, N., Shoib, S., Saeed, F., Buhari, M., Bharmauria, V., & Flouty, O. (2025). Deep learning analysis of long COVID and vaccine impact in low- and middle-income countries (LMICs): development of a risk calculator in a multicentric study. doi.org. https://doi.org/10.3389/fpubh.2025.1416273

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