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the claim

Prolonged exposure to sound above 85 decibels can cause permanent hearing loss in humans.

the verdict
INSUFFICIENT LEANING
Recorded sources
10 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 prolonged exposure to sound above 85 decibels can cause permanent hearing loss in humans?

Unclear. Several authoritative sources state that prolonged or repeated exposure to sound at or above 85 decibels can cause hearing loss, and one occupational study describes permanent sensorineural hearing loss after prolonged 85-100 dB exposure. However, most items confirm noise-induced hearing loss generally without tying the 85 dB threshold to permanent loss specifically.

Verdict: PARTIAL LEAN · 10 sources for, 0 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 · 10
Hearing loss
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Hearing loss. (n.d.). en.wikipedia.org. https://en.wikipedia.org/wiki/Hearing_loss

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More for · 9
Sensorineural hearing loss
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Sensorineural hearing loss. (n.d.). en.wikipedia.org. https://en.wikipedia.org/wiki/Sensorineural_hearing_loss

Noise and Hearing Loss. NIH Consensus Development Conference Consensus Statement (January 22-24, 1990). Volume 8, Number 1.
1990
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Noise and Hearing Loss. NIH Consensus Development Conference Consensus Statement (January 22-24, 1990). Volume 8, Number 1.. (1990). eric.ed.gov. https://eric.ed.gov/?id=ED350773

Occupational noise exposure and its effects among mill workers: A narrative review.
2024
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SNA, S., NF, K., N, A., A, I., DHMS, N., & NZ, M. S. (2024). Occupational noise exposure and its effects among mill workers: A narrative review.. doi.org. https://doi.org/10.4103/nah.nah_43_23

Noise-Induced Hearing Loss Signs | Healthy Schools | CDCMinus
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Noise-Induced Hearing Loss Signs | Healthy Schools | CDCMinus. (n.d.). archive.cdc.gov. https://archive.cdc.gov/www_cdc_gov/healthyschools/noise/signs.htm

Noise-induced hearing loss and blood factors: results from a comprehensive cross-sectional study in Iran.
2025
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SV, E., M, S., S, L., A, K., H, G., M, N., M, J., S, M., & R, E. (2025). Noise-induced hearing loss and blood factors: results from a comprehensive cross-sectional study in Iran.. doi.org. https://doi.org/10.1186/s12889-025-22161-0

Evaluation of individuals with known or suspected noise damage to hearing
2007
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Evaluation of individuals with known or suspected noise damage to hearing. (2007). doi.org. https://doi.org/10.1080/16513860601181442

Noise-Induced Hearing Loss (NIHL) | NIDCDLock
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Noise-Induced Hearing Loss (NIHL) | NIDCDLock. (n.d.). nidcd.nih.gov. https://www.nidcd.nih.gov/health/noise-induced-hearing-loss

Acoustics/Threshold of Hearing/Pain
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Acoustics/Threshold of Hearing/Pain. (n.d.). en.wikibooks.org. https://en.wikibooks.org/wiki/Acoustics/Threshold_of_Hearing/Pain

Acoustics/Threshold of Hearing & Pain
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Acoustics/Threshold of Hearing & Pain. (n.d.). en.wikibooks.org. https://en.wikibooks.org/wiki/Acoustics/Threshold_of_Hearing_&_Pain

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